Chapter I · SPECULATIVE PHILOSOPHY IN GREECE, BEFORE AND IN THE TIME OF SOKRATES.

Change in the political condition of Greece during the life of Plato.

The life of Plato extends from 427-347 B.C. He was born in the fourth year of the Peloponnesian war, and he died at the age of 80, about the time when Olynthus was taken by the Macedonian Philip. The last years of his life thus witnessed a melancholy breach in the integrity of the Hellenic world, and even exhibited data from which a far-sighted Hellenic politician might have anticipated something like the coming subjugation, realised afterwards by the victory of Philip at Chæroneia. But during the first half of Plato’s life, no such anticipations seemed even within the limits of possibility. The forces of Hellas, though discordant among themselves, were superabundant as to defensive efficacy, and were disposed rather to aggression against foreign enemies, especially against a country then so little formidable as Macedonia. It was under this contemplation of Hellas self-acting and self-sufficing — an aggregate of cities, each a political unit, yet held together by strong ties of race, language, religion, and common feelings of various kinds — that the mind of Plato was both formed and matured.

In appreciating, as far as our scanty evidence allows, the circumstances which determined his intellectual and speculative character, I shall be compelled to touch briefly upon the various philosophical theories which were propounded anterior to Sokrates — as well as to repeat some matters already brought to view in the sixteenth, sixty-seventh, and sixty-eighth chapters of my History of Greece.

Early Greek mind, satisfied with the belief in polytheistic personal agents as the real producing causes of phenomena.

To us, as to Herodotus, in his day, the philosophical speculation of the Greeks begins with the theology and cosmology of Homer and Hesiod. The series of divine persons and attributes, and generations presented by these poets, and especially the Theogony of Hesiod, supplied at one time full satisfaction to the curiosity of the Greeks respecting the past history and present agencies of the world around them. In the emphatic censure bestowed by Herakleitus on the poets and philosophers who preceded him, as having much knowledge but no sense — he includes Hesiod, as well as Pythagoras, Xenophanes, and Hekatæus: upon Homer and Archilochus he is still more severe, declaring that they ought to be banished from the public festivals and scourged.1 The sentiment of curiosity as it then existed was only secondary and derivative, arising out of some of the strong primary or personal sentiments — fear or hope, antipathy or sympathy, — impression of present weakness, — unsatisfied appetites and longings, — wonder and awe under the presence of the terror-striking phenomena of nature, &c. Under this state of the mind, when problems suggested themselves for solution, the answers afforded by Polytheism gave more satisfaction than could have been afforded by any other hypothesis. Among the indefinite multitude of invisible, personal, quasi-human agents, with different attributes and dispositions, some one could be found to account for every perplexing phenomenon. The question asked was, not What are the antecedent conditions or causes of rain, thunder, or earthquakes, but Who rains and thunders? Who produces earthquakes?2 The Hesiodic Greek was satisfied when informed that it was Zeus or Poseidon. To be told of physical agencies would have appeared to him not merely unsatisfactory, but absurd, ridiculous, and impious. It was the task of a poet like Hesiod to clothe this general polytheistic sentiment in suitable details: to describe the various Gods, Goddesses, Demigods, and other quasi-human agents, with their characteristic attributes, with illustrative adventures, and with sufficient relations of sympathy and subordination among each other, to connect them in men’s imaginations as members of the same brotherhood. Okeanus, Gæa, Uranus, Helios, Selênê, — Zeus, Poseidon, Hades — Apollo and Artemis, Dionysus and Aphroditê — these and many other divine personal agents, were invoked as the producing and sustaining forces in nature, the past history of which was contained in their filiations or contests. Anterior to all of them, the primordial matter or person, was Chaos.

Belief in such agency continued among the general public, even after the various sects of philosophy had arisen.

Hesiod represents the point of view ancient and popular (to use Aristotle’s expression3) among the Greeks, from whence all their philosophical speculation took its departure; and which continued throughout their history, to underlie all the philosophical speculations, as the faith of the ordinary public who neither frequented the schools nor conversed with philosophers. While Aristophanes, speaking in the name of this popular faith, denounces and derides Sokrates as a searcher, alike foolish and irreligious, after astronomical and physical causes — Sokrates himself not only denies the truth of the allegation, but adopts as his own the sentiment which dictated it; proclaiming Anaxagoras and others to be culpable for prying into mysteries which the Gods intentionally kept hidden.4 The repugnance felt by a numerous public, against scientific explanation — as eliminating the divine agents and substituting in their place irrational causes,5 — was a permanent fact of which philosophers were always obliged to take account, and which modified the tone of their speculations without being powerful enough to repress them.

Thales, the first Greek who propounded the hypothesis of physical agency in place of personal. Water, the primordial substance, or ἀρχή.

Even in the sixth century B.C., when the habit of composing in prose was first introduced, Pherekydes and Akusilaus still continued in their prose the theogony, or the mythical cosmogony, of Hesiod and the other old Poets: while Epimenides and the Orphic poets put forth different theogonies, blended with mystical dogmas. It was, however, in the same century, and in the first half of it, that Thales of Miletus (620-560 B.C.), set the example of a new vein of thought. Instead of the Homeric Okeanus, father of all things, Thales assumed the material substance, Water, as the primordial matter and the universal substratum of everything in nature. By various transmutations, all other substances were generated from water; all of them, when destroyed, returned into water. Like the old poets, Thales conceived the surface of the earth to be flat and round; but he did not, like them, regard it as stretching down to the depths of Tartarus: he supposed it to be flat and shallow, floating on the immensity of the watery expanse or Ocean.6 This is the main feature of the Thaletian hypothesis, about which, however, its author seems to have left no writing. Aristotle says little about Thales, and that little in a tone of so much doubt,7 that we can hardly confide in the opinions and discoveries ascribed to him by others.8

Anaximander — laid down as ἀρχή the Infinite or indeterminate — generation of the elements out of it, by evolution of latent fundamental contraries — astronomical and geological doctrines.

The next of the Ionic philosophers, and the first who published his opinions in writing, was Anaximander, of Miletus, the countryman and younger contemporary of Thales (570-520 B.C.). He too searched for an Ἀρχή, a primordial Something or principle, self-existent and comprehending in its own nature a generative, motive, or transmutative force. Not thinking that water, or any other known and definite substance fulfilled these conditions, he adopted as the foundation of his hypothesis a substance which he called the Infinite or Indeterminate. Under this name he conceived Body simply, without any positive or determinate properties, yet including the fundamental contraries, Hot, Cold, Moist, Dry, &c., in a potential or latent state, including farther a self-changing and self-developing force,9 and being moreover immortal and indestructible.10 By this inherent force, and by the evolution of one or more of these dormant contrary qualities, were generated the various definite substances of nature — Air, Fire, Water, &c. But every determinate substance thus generated was, after a certain time, destroyed and resolved again into the Indeterminate mass. “From thence all substances proceed, and into this they relapse: each in its turn thus making atonement to the others, and suffering the penalty of injustice.”11 Anaximander conceived separate existence (determinate and particular existence, apart from the indeterminate and universal) as an unjust privilege, not to be tolerated except for a time, and requiring atonement even for that. As this process of alternate generation and destruction was unceasing, so nothing less than an Infinite could supply material for it. Earth, Water, Air, Fire, having been generated, the two former, being cold and heavy, remained at the bottom, while the two latter ascended. Fire formed the exterior circle, encompassing the air like bark round a tree: this peripheral fire was broken up and aggregated into separate masses, composing the sun, moon, and stars. The sphere of the fixed stars was nearest to the earth: that of the moon next above it: that of the sun highest of all. The sun and moon were circular bodies twenty-eight times larger than the earth: but the visible part of them was only an opening in the centre, through which12 the fire or light behind was seen. All these spheres revolved round the earth, which was at first semi-fluid or mud, but became dry and solid through the heat of the sun. It was in shape like the section of a cylinder, with a depth equal to one-third of its breadth or horizontal surface, on which men and animals live. It was in the centre of the Kosmos; it remained stationary because of its equal distance from all parts of the outer revolving spheres; there was no cause determining it to move upward rather than downward or sideways, therefore it remained still.13 Its exhalations nourished the fire in the peripheral regions of the Kosmos. Animals were produced from the primitive muddy fluid of the earth: first, fishes and other lower animals — next, in process of time man, when circumstances permitted his development.14 We learn farther respecting the doctrines of Anaximander, that he proposed physical explanations of thunder, lightning, and other meteorological phenomena:15 memorable as the earliest attempt of speculation in that department, at a time when such events inspired the strongest religious awe, and were regarded as the most especial manifestations of purposes of the Gods. He is said also to have been the first who tried to represent the surface and divisions of the earth on a brazen plate, the earliest rudiment of a map or chart.16

Anaximenes — adopted Air as ἀρχή — rise of substances out of it, by condensation and rarefaction.

The third physical philosopher produced by Miletus, seemingly before the time of her terrible disasters suffered from the Persians after the Ionic revolt between 500-494 B.C., was Anaximenes, who struck out a third hypothesis. He assumed, as the primordial substance, and as the source of all generation or transmutation, Air, eternal in duration, infinite in extent. He thus returned to the principle of the Thaletian theory, selecting for his beginning a known substance, though not the same substance as Thales. To explain how generation of new products was possible (as Anaximander had tried to explain by his theory of evolution of latent contraries), Anaximenes adverted to the facts of condensation and rarefaction, which he connected respectively with cold and heat.17 The Infinite Air, possessing and exercising an inherent generative and developing power, perpetually in motion, passing from dense to rare or from rare to dense, became in its utmost rarefaction, Fire and Æther; when passing through successive stages of increased condensation it became first cloud, next water, then earth, and, lastly, in its utmost density, stone.18 Surrounding, embracing, and pervading the Kosmos, it also embodied and carried with it a vital principle, which animals obtained from it by inspiration, and which they lost as soon as they ceased to breathe.19 Anaximenes included in his treatise (which was written in a clear Ionic dialect) many speculations on astronomy and meteorology, differing widely from those of Anaximander. He conceived the Earth as a broad, flat, round plate, resting on the air.20 Earth, Sun, and Moon were in his view condensed air, the Sun acquiring heat by the extreme and incessant velocity with which he moved. The Heaven was not an entire hollow sphere encompassing the Earth below as well as above, but a hemisphere covering the Earth above, and revolving laterally round it like a cap round the head.21

The general principle of cosmogony, involved in the hypothesis of these three Milesians — one primordial substance or Something endued with motive and transmutative force, so as to generate all the variety of products, each successive and transient, which our senses witness — was taken up with more or less modification by others, especially by Diogenes of Apollonia, of whom I shall speak presently. But there were three other men who struck out different veins of thought — Pythagoras, Xenophanes, and Herakleitus: the two former seemingly contemporary with Anaximenes (550-490 B.C.), the latter somewhat later.

Pythagoras — his life and career — Pythagorean brotherhood, great political influence which it acquired among the Greco-Italian cities — incurred great enmity and was violently put down.

Of Pythagoras I have spoken at some length in the thirty-seventh chapter of my History of Greece. Speculative originality was only one among many remarkable features in his character. He was an inquisitive traveller, a religious reformer or innovator, and the founder of a powerful and active brotherhood, partly ascetic, partly political, which stands without parallel in Grecian history. The immortality of the soul, with its transmigration (metempsychosis) after death into other bodies, either of men or of other animals — the universal kindred thus recognised between men and other animals, and the prohibition which he founded thereupon against the use of animals for food or sacrifice — are among his most remarkable doctrines: said to have been borrowed (together with various ceremonial observances) from the Egyptians.22 After acquiring much celebrity in his native island of Samos and throughout Ionia, Pythagoras emigrated (seemingly about 530 B.C.) to Kroton and Metapontum in Lower Italy, where the Pythagorean brotherhood gradually acquired great political ascendancy: and from whence it even extended itself in like manner over the neighbouring Greco-Italian cities. At length it excited so much political antipathy among the body of the citizens,23 that its rule was violently put down, and its members dispersed about 509 B.C. Pythagoras died at Metapontum.

The Pythagoreans continue as a recluse sect, without political power.

Though thus stripped of power, however, the Pythagoreans still maintained themselves for several generations as a social, religious, and philosophical brotherhood. They continued and extended the vein of speculation first opened by the founder himself. So little of proclaimed individuality was there among them, that Aristotle, in criticising their doctrine, alludes to them usually under the collective name Pythagoreans. Epicharmus, in his comedies at Syracuse (470 B.C.) gave occasional utterance to various doctrines of the sect; but the earliest of them who is known to have composed a book, was Philolaus,24 the contemporary of Sokrates. Most of the opinions ascribed to the Pythagoreans originated probably among the successors of Pythagoras; but the basis and principle upon which they proceed seems undoubtedly his.

Doctrine of the Pythagoreans — Number the Essence of Things.

The problem of physical philosophy, as then conceived, was to find some primordial and fundamental nature, by and out of which the sensible universe was built up and produced; something which co-existed always underlying it, supplying fresh matter and force for generation of successive products. The hypotheses of Thales, Anaximander, and Anaximenes, to solve this problem, have been already noticed: Pythagoras solved it by saying, That the essence of things consisted in Number. By this he did not mean simply that all things were numerable, or that number belonged to them as a predicate. Numbers were not merely predicates inseparable from subjects, but subjects in themselves: substances or magnitudes, endowed with active force, and establishing the fundamental essences or types according to which things were constituted. About water,25 air, or fire, Pythagoras said nothing.26 He conceived that sensible phenomena had greater resemblance to numbers than to any one of these substrata assigned by the Ionic philosophers. Number was (in his doctrine) the self-existent reality — the fundamental material and in-dwelling force pervading the universe. Numbers were not separate from things27 (like the Platonic Ideas), but fundamenta of things — their essences or determining principles: they were moreover conceived as having magnitude and active force.28 In the movements of the celestial bodies, in works of human art, in musical harmony — measure and number are the producing and directing agencies. According to the Pythagorean Philolaus, “the Dekad, the full and perfect number, was of supreme and universal efficacy as the guide and principle of life, both to the Kosmos and to man. The nature of number was imperative and lawgiving, affording the only solution of all that was perplexing or unknown; without number all would be indeterminate and unknowable.”29

The Monas — ἀρχή, or principle of Number — geometrical conception of number — symbolical attributes of the first ten numbers, especially of the Dekad.

The first principle or beginning of Number, was the One or Monas — which the Pythagoreans conceived as including both the two fundamental contraries — the Determining and the Indeterminate.30 All particular numbers, and through them all things, were compounded from the harmonious junction and admixture of these two fundamental contraries.31 All numbers being either odd or even, the odd numbers were considered as analogous to the Determining, the even numbers to the Indeterminate. In One or the Monad, the Odd and Even were supposed to be both contained, not yet separated: Two was the first indeterminate even number; Three, the first odd and the first determinate number, because it included beginning, middle, and end. The sum of the first four numbers — One, Two, Three, Four = Ten (1 + 2 + 3 + 4) was the most perfect number of all.32 To these numbers, one, two, three, four, were understood as corresponding the fundamental conceptions of Geometry — Point, Line, Plane, Solid. Five represented colour and visible appearance: Six, the phenomenon of Life: Seven, Health, Light, Intelligence, &c.: Eight, Love or Friendship.33 Man, Horse, Justice and Injustice, had their representative numbers: that corresponding to Justice was a square number, as giving equal for equal.34

Pythagorean Kosmos and Astronomy — geometrical and harmonic laws guiding the movements of the cosmical bodies.

The Pythagoreans conceived the Kosmos, or the universe, as one single system, generated out of numbers.35 Of this system the central point — the determining or limiting One — was first in order of time, and in order of philosophical conception. By the determining influence of this central constituted One, portions of the surrounding Infinite were successively attracted and brought into system: numbers, geometrical figures, solid substances, were generated. But as the Kosmos thus constituted was composed of numbers, there could be no continuum: each numerical unit was distinct and separated from the rest by a portion of vacant space, which was imbibed, by a sort of inhalation, from the infinite space or spirit without.36 The central point was fire, called by the Pythagoreans the Hearth of the Universe (like the public hearth or perpetual fire maintained in the prytaneum of a Grecian city), or the watch-tower of Zeus. Around it revolved, from West to East, ten divine bodies, with unequal velocities, but in symmetrical movement or regular dance.37 Outermost was the circle of the fixed stars, called by the Pythagoreans Olympus, and composed of fire like the centre. Within this came successively, — with orbits more and more approximating to the centre, — the five planets, Saturn, Jupiter, Mars, Venus, Mercury: next, the Sun, the Moon, and the Earth. Lastly, between the Earth and the central fire, an hypothetical body, called the Antichthon or Counter-Earth, was imagined for the purpose of making up a total represented by the sacred number Ten, the symbol of perfection and totality. The Antichthon was analogous to a separated half of the Earth; simultaneous with the Earth in its revolutions, and corresponding with it on the opposite side of the central fire.

The inhabited portion of the Earth was supposed to be that which was turned away from the central fire and towards the Sun, from which it received light. But the Sun itself was not self-luminous: it was conceived as a glassy disk, receiving and concentrating light from the central fire, and reflecting it upon the Earth, so long as the two were on the same side of the central fire. The Earth revolved, in an orbit obliquely intersecting that of the Sun, and in twenty-four hours, round the central fire, always turning the same side towards that fire. The alternation of day and night was occasioned by the Earth being during a part of such revolution on the same side of the central fire with the Sun, and thus receiving light reflected from him: and during the remaining part of her revolution on the side opposite to him, so that she received no light at all from him. The Earth, with the Antichthon, made this revolution in one day: the Moon, in one month:38 the Sun, with the planets, Mercury and Venus, in one year: the planets, Mars, Jupiter, and Saturn, in longer periods respectively, according to their distances from the centre: lastly, the outermost circle of the fixed stars (the Olympus, or the Aplanes), in some unknown period of very long duration.39

Music of the Spheres.

The revolutions of such grand bodies could not take place, in the opinion of the Pythagoreans, without producing a loud and powerful sound; and as their distances from the central fire were supposed to be arranged in musical ratios,40 so the result of all these separate sounds was full and perfect harmony. To the objection — Why were not these sounds heard by us? — they replied, that we had heard them constantly and without intermission from the hour of our birth; hence they had become imperceptible by habit.41

Pythagorean list of fundamental Contraries — Ten opposing pairs.

Ten was, in the opinion of the Pythagoreans, the perfection and consummation of number. The numbers from One to Ten were all that they recognised as primary, original, generative. Numbers greater than ten were compounds and derivatives from the decad. They employed this perfect number not only as a basis on which to erect a bold astronomical hypothesis, but also as a sum total for their list of contraries. Many Hellenic philosophers42 recognised pairs of opposing attributes as pervading nature, and as the fundamental categories to which the actual varieties of the sensible world might be reduced. While others laid down Hot and Cold, Wet and Dry, as the fundamental contraries, the Pythagoreans adopted a list of ten pairs. 1. Limit and Unlimited; 2. Odd and Even; 3. One and Many; 4. Right and Left; 5. Male and Female; 6. Rest and Motion; 7. Straight and Curve; 8. Light and Darkness; 9. Good and Evil; 10. Square and Oblong.43 Of these ten pairs, five belong to arithmetic or to geometry, one to mechanics, one to physics, and three to anthropology or ethics. Good and Evil, Regularity and Irregularity, were recognised as alike primordial and indestructible.44

The arithmetical and geometrical view of nature, to which such exclusive supremacy is here given by the Pythagoreans, is one of the most interesting features of Grecian philosophy. They were the earliest cultivators of mathematical science,45 and are to be recognised as having paved the way for Euclid and Archimedes, notwithstanding the symbolical and mystical fancies with which they so largely perverted what are now regarded as the clearest and most rigorous processes of the human intellect. The important theorem which forms the forty-seventh Proposition of Euclid’s first book, is affirmed to have been discovered by Pythagoras himself: but how much progress was made by him and his followers in the legitimate province of arithmetic and geometry, as well as in the applications of these sciences to harmonics,46 which they seem to have diligently cultivated, we have not sufficient information to determine with certainty.

Eleatic philosophy — Xenophanes.

Contemporary with Pythagoras, and like him an emigrant from Ionia to Italy, was Xenophanes of Kolophon. He settled at the Phokæan colony of Elea, on the Gulf of Poseidonia; his life was very long, but his period of eminence appears to belong (as far as we can make out amidst conflicting testimony) to the last thirty years of the sixth century B.C. (530-500 B.C.). He was thus contemporary with Anaximander and Anaximenes, as well as with Pythagoras, the last of whom he may have personally known.47 He composed, and recited in person, poems — epic, elegiac, and iambic — of which a very few fragments remain.

His censures upon the received Theogony and religious rites.

Xenophanes takes his point of departure, not from Thales or Anaximander, but from the same ancient theogonies which they had forsaken. But he follows a very different road. The most prominent feature in his poems (so far as they remain), is the directness and asperity with which he attacks the received opinions respecting the Gods — and the poets Hesiod and Homer, the popular exponents of those opinions. Xenophanes not only condemns these poets for having ascribed to the Gods discreditable exploits, but even calls in question the existence of the Gods, and ridicules the anthropomorphic conception which pervaded the Hellenic faith. “If horses or lions could paint, they would delineate their Gods in form like themselves. The Ethiopians conceive their Gods as black, the Thracians conceive theirs as fair and with reddish hair.”48 Dissatisfied with much of the customary worship and festivals, Xenophanes repudiated divination altogether, and condemned the extravagant respect shown to victors in Olympic contests,49 not less than the lugubrious ceremonies in honour of Leukothea. He discountenanced all Theogony, or assertion of the birth of Gods, as impious, and as inconsistent with the prominent attribute of immortality ascribed to them.50 He maintained that there was but one God, identical with, or a personification of, the whole Uranus. “The whole Kosmos, or the whole God, sees, hears, and thinks.” The divine nature (he said) did not admit of the conception of separate persons one governing the other, or of want and imperfection in any way.51

His doctrine of Pankosmism, or Pantheism — The whole Kosmos is Ens Unum or God — Ἓν καὶ Πᾶν. Non-Ens inadmissible.

Though Xenophanes thus appears (like Pythagoras) mainly as a religious dogmatist, yet theogony and cosmogony were so intimately connected in the sixth century B.C., that he at the same time struck out a new philosophical theory. His negation of theogony was tantamount to a negation of cosmogony. In substituting one God for many, he set aside all distinct agencies in the universe, to recognise only one agent, single, all-pervading, indivisible. He repudiated all genesis of a new reality, all actual existence of parts, succession, change, beginning, end, etc., in reference to the universe, as well as in reference to God. “Wherever I turned my mind (he exclaimed) everything resolved itself into One and the same: all things existing came back always and everywhere into one similar and permanent nature.”52 The fundamental tenet of Xenophanes was partly religious, partly philosophical, Pantheism, or Pankosmism: looking upon the universe as one real all-comprehensive Ens, which he would not call either finite or infinite, either in motion or at rest.53 Non-Ens he pronounced to be an absurdity — an inadmissible and unmeaning phrase.

Scepticism of Xenophanes — complaint of philosophy as unsatisfactory.

It was thus from Xenophanes that the doctrine of Pankosmism obtained introduction into Greek philosophy, recognising nothing real except the universe as an indivisible and unchangeable whole. Such a creed was altogether at variance with common perception, which apprehends the universe as a plurality of substances, distinguishable, divisible, changeable, &c. And Xenophanes could not represent his One and All, which excluded all change, to be the substratum out of which phenomenal variety was generated — as Water, Air, the Infinite, had been represented by the Ionic philosophers. The sense of this contradiction, without knowing how to resolve it, appears to have occasioned the mournful complaints of irremediable doubt and uncertainty, preserved as fragments from his poems. “No man (he exclaims) knows clearly about the Gods or the universe: even if he speak what is perfectly true, he himself does not know it to be true: all is matter of opinion.”54

Nevertheless while denying all real variety or division in the universe, Xenophanes did not deny the variety of human perceptions and beliefs. But he allowed them as facts belonging to man, not to the universe — as subjective or relative, not as objective or absolute. He even promulgated opinions of his own respecting many of the physical and cosmological subjects treated by the Ionic philosophers.

His conjectures on physics and astronomy.

Without attempting to define the figure of the Earth, he considered it to be of vast extent and of infinite depth;55 including, in its interior cavities, prodigious reservoirs both of fire and water. He thought that it had at one time been covered with water, in proof of which he noticed the numerous shells found inland and on mountain tops, together with the prints of various fish which he had observed in the quarries of Syracuse, in the island of Paros, and elsewhere. From these facts he inferred that the earth had once been covered with water, and even that it would again be so covered at some future time, to the destruction of animal and human life.56 He supposed that the sun, moon, and stars were condensations of vapours exhaled from the Earth, collected into clouds, and alternately inflamed and extinguished.57

Parmenides continues the doctrine of Xenophanes — Ens Parmenideum, self-existent, eternal, unchangeable, extended, — Non-Ens, an unmeaning phrase.

Parmenides, of Elea, followed up and gave celebrity to the Xenophanean hypothesis in a poem, of which the striking exordium is yet preserved. The two veins of thought, which Xenophanes had recognised and lamented his inability to reconcile, were proclaimed by Parmenides as a sort of inherent contradiction in the human mind — Reason or Cogitation declaring one way, Sense (together with the remembrances and comparisons of sense) suggesting a faith altogether opposite. Dropping that controversy with the popular religion which had been raised by Xenophanes, Parmenides spoke of many different Gods or Goddesses, and insisted on the universe as one, without regarding it as one God. He distinguished Truth from matter of Opinion.58 Truth was knowable only by pure mental contemplation or cogitation, the object of which was Ens or Being, the Real or Absolute: here the Cogitans and the Cogitatum were identical, one and the same.59 Parmenides conceived Ens not simply as existent, but as self-existent, without beginning or end,60 as extended, continuous, indivisible, and unchangeable. The Ens Parmenideum comprised the two notions of Extension and Duration:61 it was something Enduring and Extended; Extension including both space, and matter so far forth as filling space. Neither the contrary of Ens (Non-Ens), nor anything intermediate between Ens and Non-Ens, could be conceived, or named, or reasoned about. Ens comprehended all that was Real, without beginning or end, without parts or difference, without motion or change, perfect and uniform like a well-turned sphere.62

He recognises a region of opinion, phenomenal and relative, apart from Ens.

In this subject Ens, with its few predicates, chiefly negative, consisted all that Parmenides called Truth. Everything else belonged to the region of Opinion, which embraced all that was phenomenal, relative, and transient: all that involved a reference to man’s senses, apprehension, and appreciation, all the indefinite diversity of observed facts and inferences. Plurality, succession, change, motion, generation, destruction, division of parts, &c., belonged to this category. Parmenides did not deny that he and other men had perceptions and beliefs corresponding to these terms, but he denied their application to the Ens or the self-existent. We are conscious of succession, but the self-existent has no succession: we perceive change of colour and other sensible qualities, and change of place or motion, but Ens neither changes nor moves. We talk of things generated or destroyed — things coming into being or going out of being — but this phrase can have no application to the self-existent Ens, which is always and cannot properly be called either past or future.63 Nothing is really generated or destroyed, but only in appearance to us, or relatively to our apprehension.64 In like manner we perceive plurality of objects, and divide objects into parts. But Ens is essentially One, and cannot be divided.65 Though you may divide a piece of matter you cannot divide the extension of which that matter forms part: you cannot (to use the expression of Hobbes66) pull asunder the first mile from the second, or the first hour from the second. The milestone, or the striking of the clock, serve as marks to assist you in making a mental division, and in considering or describing one hour and one mile apart from the next. This, however, is your own act, relative to yourself: there is no real division of extension into miles, or of duration into hours. You may consider the same space or time as one or as many, according to your convenience: as one hour or as sixty minutes, as one mile or eight furlongs. But all this is a process of your own mind and thoughts; another man may divide the same total in a way different from you. Your division noway modifies the reality without you, whatever that may be — the Extended and Enduring Ens — which remains still a continuous one, undivided and unchanged.

Parmenidean ontology stands completely apart from phenomenology.

The Ens of Parmenides thus coincided mainly with that which (since Kant) has been called the Noumenon — the Thing in itself — the Absolute; or rather with that which, by a frequent illusion, passes for the absolute — no notice being taken of the cogitant and believing apart from mind, as if cogitation and belief, cogitata and credita, would be had without it. By Ens was understood the remnant in his mind, after leaving out all that abstraction, as far as it had then been carried, could leave out. It was the minimum indispensable to the continuance of thought; you cannot think (Parmenides says) without thinking of Something, and that Something Extended and Enduring. Though he and others talk of this Something as an Absolute (i.e. apart from or independent of his own thinking mind), yet he also uses some juster language (τὸ γὰρ αὐτὸ νοεῖν ἔστιν τε καὶ εἶναι), showing that it is really relative: that if the Cogitans implies a Cogitatum, the Cogitatum also implies no less its correlative Cogitans: and that though we may divide the two in words, we cannot divide them in fact. It is to be remarked that Parmenides distinguishes the Enduring or Continuous from the Transient or Successive, Duration from Succession (both of which are included in the meaning of the word Time), and that he considers Duration alone as belonging to Ens or the Absolute — to the region of Truth — setting it in opposition or antithesis to Succession, which he treats as relative and phenomenal. We have thus (with the Eleates) the first appearance of Ontology, the science of Being or Ens, in Grecian philosophy. Ens is everything, and everything is Ens. In the view of Parmenides, Ontology is not merely narrow, but incapable of enlargement or application; we shall find Plato and others trying to expand it into numerous imposing generalities.67

Parmenidean phenomenology — relative and variable.

Apart from Ontology, Parmenides reckons all as belonging to human opinions. These were derived from the observations of sense (which he especially excludes from Ontology) with the comparisons, inferences, hypothesis, &c., founded thereupon: the phenomena of Nature generally.68 He does not attempt (as Plato and Aristotle do after him) to make Ontology serve as a principle or beginning for anything beyond itself,69 or as a premiss from which the knowledge of nature is to be deduced. He treats the two — Ontology and Phenomenology, to employ an Hegelian word — as radically disparate, and incapable of any legitimate union. Ens was essentially one and enduring: Nature was essentially multiform, successive, ever changing and moving relative to the observer, and different to observers at different times and places. Parmenides approached the study of Nature from its own starting point, the same as had been adopted by the Ionic philosophers — the data of sense, or certain agencies selected among them, and vaguely applied to explain the rest. Here he felt that he relinquished the full conviction, inseparable from his intellectual consciousness, with which he announced his few absolute truths respecting Ens and Non-Ens, and that he entered upon a process of mingled observation and conjecture, where there was great room for diversity of views between man and man.

Parmenides recognises no truth, but more or less probability, in phenomenal explanations. — His physical and astronomical conjectures.

Yet though thus passing from Truth to Opinions, from full certainty to comparative and irremediable uncertainty,70 Parmenides does not consider all opinions as equally true or equally untrue. He announces an opinion of his own — what he thinks most probable or least improbable — respecting the structure and constitution of the Kosmos, and he announces it without the least reference to his own doctrines about Ens. He promises information respecting Earth, Water, Air, and the heavenly bodies, and how they work, and how they came to be what they are.71 He recognises two elementary principles or beginnings, one contrary to the other, but both of them positive — Light, comprehending the Hot, the Light, and the Rare — Darkness, comprehending the Cold, the Heavy, and the Dense.72 These two elements, each endued with active and vital properties, were brought into junction and commixture by the influence of a Dea Genitalis analogous to Aphroditê,73 with her first-born son Eros, a personage borrowed from the Hesiodic Theogony. From hence sprang the other active forces of nature, personified under various names, and the various concentric circles or spheres of the Kosmos. Of those spheres, the outer-most was a solid wall of fire — “flammantia mœnia mundi” — next under this the Æther, distributed into several circles of fire unequally bright and pure — then the circle called the Milky Way, which he regarded as composed of light or fire combined with denser materials — then the Sun and Moon, which were condensations of fire from the Milky Way — lastly, the Earth, which he placed in the centre of the Kosmos.74 He is said to have been the first who pronounced the earth to be spherical, and even distributed it into two or five zones.75 He regarded it as immovable, in consequence of its exact position in the centre. He considered the stars to be fed by exhalation from the Earth. Midway between the Earth and the outer flaming circle, he supposed that there dwelt a Goddess — Justice or Necessity — who regulated all the movements of the Kosmos, and maintained harmony between its different parts. He represented the human race as having been brought into existence by the power of the sun,76 and he seems to have gone into some detail respecting animal procreation, especially in reference to the birth of male and female offspring. He supposed that the human mind, as well as the human body, was compounded of a mixture of the two elemental influences, diffused throughout all Nature: that like was perceived and known by like: that thought and sensation were alike dependent upon the body, and upon the proportions of its elemental composition: that a certain limited knowledge was possessed by every object in Nature, animate or inanimate.77

Before we pass from Parmenides to his pupil and successor Zeno, who developed the negative and dialectic side of the Eleatic doctrine, it will be convenient to notice various other theories of the same century: first among them that of Herakleitus, who forms as it were the contrast and antithesis to Xenophanes and Parmenides.

Herakleitus — his obscure style, impressive metaphors, confident and contemptuous dogmatism.

Herakleitus of Ephesus, known throughout antiquity by the denomination of the Obscure, comes certainly after Pythagoras and Xenophanes and apparently before Parmenides. Of the two first he made special mention, in one of the sentences, alike brief and contemptuous which have been preserved from his lost treatise:—“Much learning does not teach reason: otherwise it would have taught Hesiod and Pythagoras, Xenophanes and Hekatæus.” In another passage Herakleitus spoke of the “extensive knowledge, cleverness, and wicked arts” of Pythagoras. He declared that Homer as well as Archilochus deserved to be scourged and expelled from the public festivals.78 His thoughts were all embodied in one single treatise, which he is said to have deposited in the temple of the Ephesian Artemis. It was composed in a style most perplexing and difficult to understand, full of metaphor, symbolical illustration, and antithesis: but this very circumstance imparted to it an air of poetical impressiveness and oracular profundity.79 It exercised a powerful influence on the speculative minds of Greece, both in the Platonic age, and subsequently: the Stoics especially both commented on it largely (though with many dissentient opinions among the commentators), and borrowed with partial modifications much of its doctrine.80

Doctrine of Herakleitus — perpetual process of generation and destruction — everything flows, nothing stands — transition of the elements into each other, backwards and forwards.

The expositors followed by Lucretius and Cicero conceived Herakleitus as having proclaimed Fire to be the universal and all-pervading element of nature;81 as Thales had recognised water, and Anaximenes air. This interpretation was countenanced by some striking passages of Herakleitus: but when we put together all that remains from him, it appears that his main doctrine was not physical, but metaphysical or ontological: that the want of adequate general terms induced him to clothe it in a multitude of symbolical illustrations, among which fire was only one, though the most prominent and most significant.82 Xenophanes and the Eleates had recognised, as the only objective reality, One extended Substance or absolute Ens, perpetual, infinite, indeterminate, incapable of change or modification. They denied the objective reality of motion, change, generation, and destruction — considering all these to be purely relative and phenomenal. Herakleitus on the contrary denied everything in the nature of a permanent and perpetual substratum: he laid down nothing as permanent and perpetual except the process of change — the alternate sequence of generation and destruction, without beginning or end — generation and destruction being in fact coincident or identical, two sides of the same process, since the generation of one particular state was the destruction of its antecedent contrary. All reality consisted in the succession and transition, the coming and going, of these finite and particular states: what he conceived as the infinite and universal, was the continuous process of transition from one finite state to the next — the perpetual work of destruction and generation combined, which terminated one finite state in order to make room for a new and contrary state.

Variety of metaphors employed by Herakleitus, signifying the same general doctrine.

This endless process of transition, or ever-repeated act of generation and destruction in one, was represented by Herakleitus under a variety of metaphors and symbols — fire consuming its own fuel — a stream of water always flowing — opposite currents meeting and combating each other — the way from above downwards, and the way from below upwards, one and the same — war, contest, penal destiny or retributive justice, the law or decree of Zeus realising each finite condition of things and then destroying its own reality to make place for its contrary and successor. Particulars are successively generated and destroyed, none of them ever arriving at permanent existence:83 the universal process of generation and destruction alone continues. There is no Esse, but a perpetual Fieri: a transition from Esse to Non-Esse, from Non-Esse to Esse, with an intermediate temporary halt between them: a ceaseless meeting and confluence of the stream of generation with the opposite stream of destruction: a rapid and instant succession, or rather coincidence and coalescence, of contraries. Living and dead, waking and sleeping, light and dark, come into one or come round into each other: everything twists round into its contrary: everything both is and is not.84

Nothing permanent except the law of process and implication of contraries — the transmutative force. Fixity of particulars is an illusion for most part, so far as it exists, it is a sin against the order of Nature.

The universal law, destiny, or divine working (according to Herakleitus), consists in this incessant process of generation and destruction, this alternation of contraries. To carry out such law fully, each of the particular manifestations ought to appear and pass away instantaneously — to have no duration of its own, but to be supplanted by its contrary at once. And this happens to a great degree, even in cases where it does not appear to happen: the river appears unchanged, though the water which we touched a short time ago has flowed away:85 we and all around us are in rapid movement, though we appear stationary: the apparent sameness and fixity is thus a delusion. But Herakleitus does not seem to have thought that his absolute universal force was omnipotent, or accurately carried out in respect to all particulars. Some positive and particular manifestations, when once brought to pass, had a certain measure of fixity, maintaining themselves for more or less time before they were destroyed. There was a difference between one particular and another, in this respect of comparative durability: one was more durable, another less.86 But according to the universal law or destiny, each particular ought simply to make its appearance, then to be supplanted and re-absorbed; so that the time during which it continued on the scene was, as it were, an unjust usurpation, obtained by encroaching on the equal right of the next comer, and by suspending the negative agency of the universal. Hence arises an antithesis or hostility between the universal law or process on one side, and the persistence of particular states on the other. The universal law or process is generative and destructive, positive and negative, both in one: but the particular realities in which it manifests itself are all positive, each succeeding to its antecedent, and each striving to maintain itself against the negativity or destructive interference of the universal process. Each particular reality represented rest and fixity: each held ground as long as it could against the pressure of the cosmical force, essentially moving, destroying, and renovating. Herakleitus condemns such pretensions of particular states to separate stability, inasmuch as it keeps back the legitimate action of the universal force, in the work of destruction and renovation.

Illustrations by which Herakleitus symbolized his perpetual force, destroying and generating.

The theory of Herakleitus thus recognised no permanent substratum, or Ens, either material or immaterial — no category either of substance or quality — but only a ceaseless principle of movement or change, generation and destruction, position and negation, immediately succeeding, or coinciding with each other.87 It is this principle or everlasting force which he denotes under so many illustrative phrases — “the common (τὸ ξυνον), the universal, the all-comprehensive (τὸ περιέχον), the governing, the divine, the name or reason of Zeus, fire, the current of opposites, strife or war, destiny, justice, equitable measure, Time or the Succeeding,” &c. The most emphatic way in which this theory could be presented was, as embodied, in the coincidence or co-affirmation of contraries. Many of the dicta cited and preserved out of Herakleitus are of this paradoxical tenor.88 Other dicta simply affirm perpetual flow, change, or transition, without express allusion to contraries: which latter, however, though not expressed, must be understood, since change was conceived as a change from one contrary to the other.89 In the Herakleitean idea, contrary forces come simultaneously into action: destruction and generation always take effect together: there is no negative without a positive, nor positive without a negative.90

Water — intermediate between Fire (Air) and Earth.

Such was the metaphysical or logical foundation of the philosophy of Herakleitus: the idea of an eternal process of change, manifesting itself in the perpetual destruction and renovation of particular realities, but having itself no reality apart from these particulars, and existing only in them as an immanent principle or condition. This principle, from the want of appropriate abstract terms, he expressed in a variety of symbolical and metaphorical phrases, among which Fire stood prominent.91 But though Fire was thus often used to denote the principle or ideal process itself, the same word was also employed to denote that one of the elements which formed the most immediate manifestation of the principle. In this latter sense, Fire was the first stage of incipient reality: the second stage was water, the third earth. This progression, fire, water, earth, was in Herakleitean language “the road downwards,” which was the same as “the road upwards,” from earth to water and again to fire. The death of fire was its transition into water: that of water was its transition partly into earth, partly into flame. As fire was the type of extreme mobility, perpetual generation and destruction — so earth was the type of fixed and stationary existence, resisting movement or change as much as possible.92 Water was intermediate between the two.

Sun and stars — not solid bodies but meteoric aggregations dissipated and renewed — Eclipses — ἐκπύρωσις, or destructions of the Kosmos by fire.

Herakleitus conceived the sun and stars, not as solid bodies, but as meteoric aggregations perpetually dissipated and perpetually renewed or fed, by exhalation upward from the water and earth. The sun became extinguished and rekindled in suitable measure and proportion, under the watch of the Erinnyes, the satellites of Justice. These celestial lights were contained in troughs, the open side of which was turned towards our vision. In case of eclipses the trough was for the time reversed, so that the dark side was turned towards us; and the different phases of the moon were occasioned by the gradual turning round of the trough in which her light was contained. Of the phenomena of thunder and lightning also, Herakleitus offered some explanation, referring them to aggregations and conflagrations of the clouds, and violent currents of winds.93 Another hypothesis was often ascribed to Herakleitus, and was really embraced by several of the Stoics in later times — that there would come a time when all existing things would be destroyed by fire (ἐκπύρωσις), and afterwards again brought into reality in a fresh series of changes. But this hypothesis appears to have been conceived by him metaphysically rather than physically. Fire was not intended to designate the physical process of combustion, but was a symbolical phrase for the universal process; the perpetual agency of conjoint destruction and renovation, manifesting itself in the putting forth and re-absorption of particulars, and having no other reality except as immanent in these particulars.94 The determinate Kosmos of the present moment is perpetually destroyed, passing into fire or the indeterminate: it is perpetually renovated or passes out of fire into water, earth — out of the indeterminate, into the various determinate modifications. At the same time, though Herakleitus seems to have mainly employed these symbols for the purpose of signifying or typifying a metaphysical conception, yet there was no clear apprehension, even in his own mind, of this generality, apart from all symbols: so that the illustration came to count as a physical fact by itself, and has been so understood by many.95 The line between what he meant as the ideal or metaphysical process, and the elementary or physical process, is not easy to draw, in the fragments which now remain.

His doctrines respecting the human soul and human knowledge. All wisdom resided in the Universal Wisdom — individual Reason is worthless.

The like blending of metaphysics and physics — of the abstract and the concrete and sensible — is to be found in the statements remaining from Herakleitus respecting the human soul and human knowledge. The human soul, according to him, was an effluence or outlying portion of the Universal96 — the fire — the perpetual movement or life of things. As such, its nature was to be ever in movement: but it was imprisoned and obstructed by the body, which represented the stationary, the fixed, the particular — that which resisted the universal force of change. So long as a man lived, his soul or mind, though thus confined, participated more or less in the universal movement: but when he died, his body ceased to participate in it, and became therefore vile, “fit only to be cast out like dung”. Every man, individually considered, was irrational;97 reason belonged only to the universal or the whole, with which the mind of each living man was in conjunction, renewing itself by perpetual absorption, inspiration or inhalation, vaporous transition, impressions through the senses and the pores, &c. During sleep, since all the media of communication, except only those through respiration, were suspended, the mind became stupefied and destitute of memory. Like coals when the fire is withdrawn, it lost its heat and tended towards extinction.98 On waking, it recovered its full communication with the great source of intelligence without — the universal all-comprehensive process of life and movement. Still, though this was the one and only source of intelligence open to all waking men, the greater number of men could neither discern it for themselves, nor understand it without difficulty even when pointed out to them. Though awake, they were not less unconscious or forgetful of the process going on around them, than if they had been asleep.99 The eyes and ears of men with barbarous or stupid souls, gave them false information.100 They went wrong by following their own individual impression or judgment: they lived as if reason or intelligence belonged to each man individually. But the only way to attain truth was, to abjure all separate reason, and to follow the common or universal reason. Each man’s mind must become identified and familiar with that common process which directed and transformed the whole: in so far as he did this, he attained truth: whenever he followed any private or separate judgment of his own, he fell into error.101 The highest pitch of this severance of the individual judgment was seen during sleep, at which time each man left the common world to retire into a world of his own.102

By Universal Reason he did not mean the Reason of most men as it is, but as it ought to be.

By this denunciation of the mischief of private judgment, Herakleitus did not mean to say that a man ought to think like his neighbours or like the public. In his view the public were wrong, collectively as well as individually. The universal reason to which he made appeal, was not the reason of most men as it actually is but that which, in his theory, ought to be their reason:103 that which formed the perpetual and governing process throughout all nature, though most men neither recognised nor attended to it, but turned away from it in different directions equally wrong. No man was truly possessed of reason, unless his individual mind understood the general scheme of the universe, and moved in full sympathy with its perpetual movement and alternation or unity of contraries.104 The universal process contained in itself a sum-total of particular contraries which were successively produced and destroyed: to know the universal was to know these contraries in one, and to recognise them as transient, but correlative and inseparable, manifestations, each implying the other — not as having each a separate reality and each excluding its contrary.105 In so far as a man’s mind maintained its kindred nature and perpetual conjoint movement with the universal, he acquired true knowledge; but the individualising influences arising from the body usually overpowered this kindred with the universal, and obstructed the continuity of this movement, so that most persons became plunged in error and illusion.

Herakleitus at the opposite pole from Parmenides.

The absolute of Herakleitus stands thus at the opposite pole as compared with that of Parmenides: it is absolute movement, change, generation and destruction — negation of all substance and stability,106 temporary and unbecoming resistance of each successive particular to the destroying and renewing current of the universal. The Real, on this theory, was a generalisation, not of substances, but of facts, events, changes, revolutions, destructions, generations, &c., determined by a law of justice or necessity which endured, and which alone endured, for ever. Herakleitus had many followers, who adopted his doctrine wholly or partially, and who gave to it developments which he had not adverted to, perhaps might not have acknowledged.107 It was found an apt theme by those who, taking a religious or poetical view of the universe, dwelt upon the transitory and contemptible value of particular existences, and extolled the grandeur or power of the universal. It suggested many doubts and debates respecting the foundations of logical evidence, and the distinction of truth from falsehood; which debates will come to be noticed hereafter, when we deal with the dialectical age of Plato and Aristotle.

Empedokles — his doctrine of the four elements, and two moving or restraining forces.

After Herakleitus, and seemingly at the same time with Parmenides, we arrive at Empedokles (about 500-430 B. C.) and his memorable doctrine of the Four Elements. This philosopher, a Sicilian of Agrigentum, and a distinguished as well as popular-minded citizen, expounded his views in poems, of which Lucretius108 speaks with high admiration, but of which few fragments are preserved. He agreed with Parmenides, and dissented from Herakleitus and the Ionic philosophers, in rejecting all real generation and destruction.109 That which existed had not been generated and could not be destroyed. Empedokles explained what that was, which men mistook for generation and destruction. There existed four distinct elements — Earth, Water, Air, and Fire — eternal, inexhaustible, simple, homogeneous, equal, and co-ordinate with each other. Besides these four substances, there also existed two moving forces, one contrary to the other — Love or Friendship, which brought the elements into conjunction — Enmity or Contest, which separated them. Here were alternate and conflicting agencies, either bringing together different portions of the elements to form a new product, or breaking up the product thus formed and separating the constituent elements. Sometimes the Many were combined into One; sometimes the One was decomposed into Many. Generation was simply this combination of elements already existing separately — not the calling into existence of anything new: destruction was in like manner the dissolution of some compound, not the termination of any existent simple substance. The four simple substances or elements (which Empedokles sometimes calls by names of the popular Deities — Zeus, Hêrê, Aidoneus, &c.), were the roots or foundations of everything.110

Construction of the Kosmos from these elements and forces — action and counter action of love and enmity. The Kosmos alternately made and unmade.

From the four elements — acted upon by these two forces, abstractions or mythical personifications — Empedokles showed how the Kosmos was constructed. He supposed both forces to be perpetually operative, but not always with equal efficacy: sometimes the one was predominant, sometimes the other, sometimes there was equilibrium between them. Things accordingly pass through a perpetual and ever-renewed cycle. The complete preponderance of Love brings alternately all the elements into close and compact unity, Enmity being for the time eliminated. Presently the action of the latter recommences, and a period ensues in which Love and Enmity are simultaneously operative; until at length Enmity becomes the temporary master, and all union is for the time dissolved. But this condition of things does not last. Love again becomes active, so that partial and increasing combination of the elements is produced, and another period commences — the simultaneous action of the two forces, which ends in renewed empire of Love, compact union of the elements, and temporary exclusion of Enmity.111

Empedoklean predestined cycle of things — complete empire of Love — Sphærus — Empire of Enmity — disengagement or separation of the elements — astronomy and meteorology.

This is the Empedoklean cycle of things,112 divine or predestined, without beginning or end: perpetual substitution of new for old compounds — constancy only in the general principle of combination and dissolution. The Kosmos which Empedokles undertakes to explain, takes its commencement from the period of complete empire of Love, or compact and undisturbed union of all the elements. This he conceives and divinises under the name of Sphærus — as One sphere, harmonious, uniform, and universal, having no motion, admitting no parts or separate existences within it, exhibiting no one of the four elements distinctly, “instabilis tellus, innabilis unda” — a sort of chaos.113 At the time prescribed by Fate or Necessity, the action of Enmity recommenced, penetrating gradually through the interior of Sphærus, “agitating the members of the God one after another,”114 disjoining the parts from each other, and distending the compact ball into a vast porous mass. This mass, under the simultaneous and conflicting influences of Love and Enmity, became distributed partly into homogeneous portions, where each of the four elements was accumulated by itself — partly into compounds or individual substances, where two or more elements were found in conjunction. Like had an appetite for Like — Air for Air, Fire for Fire, and so forth: and a farther extension of this appetite brought about the mixture of different elements in harmonious compounds. First, the Air disengaged itself, and occupied a position surrounding the central mass of Earth and Water: next, the Fire also broke forth, and placed itself externally to the Air, immediately in contact with the outermost crystalline sphere, formed of condensed and frozen air, which formed the wall encompassing the Kosmos. A remnant of Fire and Air still remained embodied in the Earth, but the great mass of both so distributed themselves, that the former occupied most part of one hemisphere, the latter most part of the other.115 The rapid and uniform rotation of the Kosmos, caused by the exterior Fire, compressed the interior elements, squeezed the water out of the earth like perspiration from the living body, and thus formed the sea. The same rotation caused the earth to remain unmoved, by counterbalancing and resisting its downward pressure or gravity.116 In the course of the rotation, the light hemisphere of Fire, and the comparatively dark hemisphere of Air, alternately came above the horizon: hence the interchange of day and night. Empedokles (like the Pythagoreans) supposed the sun to be not self-luminous, but to be a glassy or crystalline body which collected and reflected the light from the hemisphere of Fire. He regarded the fixed stars as fastened to the exterior crystalline sphere, and revolving along with it, but the planets as moving free and detached from any sphere.117 He supposed the alternations of winter and summer to arise from a change in the proportions of Air and Fire in the atmospheric regions: winter was caused by an increase of the Air, both in volume and density, so as to drive back the exterior Fire to a greater distance from the Earth, and thus to produce a diminution of heat and light: summer was restored when the Fire, in its turn increasing, extruded a portion of the Air, approached nearer to the Earth, and imparted to the latter more heat and light.118 Empedokles farther supposed (and his contemporaries, Anaxagoras and Diogenes, held the same opinion) that the Earth was round and flat at top and bottom, like a drum or tambourine: that its surface had been originally horizontal, in reference to the rotation of the Kosmos around it, but that it had afterwards tilted down to the south and upward towards the north, so as to lie aslant instead of horizontal. Hence he explained the fact that the north pole of the heavens now appeared obliquely elevated above the horizon.119

Formation of the Earth, of Gods, men, animals, and plants.

From astronomy and meteorology Empedokles120 proceeded to describe the Earth, its tenants, and its furniture; how men were first produced, and how put together. All were produced by the Earth: being thrown up under the stimulus of Fire still remaining within it. In its earliest manifestations, and before the influence of Discord had been sufficiently neutralized, the Earth gave birth to plants only, being as yet incompetent to produce animals.121 After a certain time she gradually acquired power to produce animals, first imperfectly and piecemeal, trunks without limbs and limbs without trunks; next, discordant and monstrous combinations, which did not last, such as creatures half man half ox; lastly, combinations with parts suited to each other, organizations perfect and durable, men, horses, &c., which continued and propagated.122 Among these productions were not only plants, birds, fishes, and men, but also the “long-lived Gods”.123 All compounds were formed by intermixture of the four elements, in different proportions, more or less harmonious.124 These elements remained unchanged: no one of them was transformed into another. But the small particles of each flowed into the pores of the others, and the combination was more or less intimate, according as the structure of these pores was more or less adapted to receive them. So intimate did the mixture of these fine particles become, when the effluvia of one and the pores of another were in symmetry, that the constituent ingredients, like colours compounded together by the painter,125 could not be discerned or handled separately. Empedokles rarely assigned any specific ratio in which he supposed the four elements to enter into each distinct compound, except in the case of flesh and blood, which were formed of all the four in equal portions; and of bones, which he affirmed to be composed of one-fourth earth, one-fourth water, and the other half fire. He insisted merely on the general fact of such combinations, as explaining what passed for generation of new substances without pointing out any reason to determine one ratio of combination rather than another, and without ascribing to each compound a distinct ratio of its own. This omission in his system is much animadverted on by Aristotle.

Physiology of Empedokles — Procreation — Respiration — movement of the blood.

Empedokles farther laid down many doctrines respecting physiology. He dwelt on the procreation of men and animals, entered upon many details respecting gestation and the fœtus, and even tried to explain what it was that determined the birth of male or female offspring. About respiration, alimentation, and sensation, he also proposed theories: his explanation of respiration remains in one of the fragments. He supposed that man breathed, partly through the nose, mouth, and lungs, but partly also through the whole surface of the body, by the pores wherewith it was pierced, and by the internal vessels connected with those pores. Those internal vessels were connected with the blood vessels, and the portion of them near the surface was alternately filled with blood or emptied of blood, by the flow outwards from the centre or the ebb inwards towards the centre. Such was the movement which Empedokles considered as constantly belonging to the blood: alternately a projection outwards from the centre and a recession backwards towards the centre. When the blood thus receded, the extremities of the vessels were left empty, and the air from without entered: when the outward tide of blood returned, the air which had thus entered was expelled.126 Empedokles conceived this outward tide of blood to be occasioned by the effort of the internal fire to escape and join its analogous element without.127

Doctrine of effluvia and pores — explanation of perceptions — Intercommunication of the elements with the sentient subject — like acting upon like.

The doctrine of pores and effluvia, which formed so conspicuous an item in the physics of Empedokles, was applied by him to explain sensation. He maintained the general doctrine (which Parmenides had advanced before him, and which Plato retained after him), that sensation was produced by like acting upon like: Herakleitus before him, and Anaxagoras after him, held that it was produced by unlike acting upon unlike. Empedokles tried (what Parmenides had not tried) to apply his doctrine to the various senses separately.128 Man was composed of the same four elements as the universe around him: and since like always tended towards like, so by each of the four elements within himself, he perceived and knew the like element without. Effluvia from all bodies entered his pores, wherever they found a suitable channel: hence he perceived and knew earth by earth, water by water, and so forth.129 Empedokles, assuming perception and knowledge to be produced by such intercommunication of the four elements, believed that not man and animals only, but plants and other substances besides, perceived and knew in the same way. Everything possessed a certain measure of knowledge, though less in degree, than man, who was a more compound structure.130 Perception and knowledge was more developed in different animals in proportion as their elementary composition was more mixed and varied. The blood, as the most compound portion of the whole body, was the principal seat of intelligence.131

Sense of vision.

In regard to vision, Empedokles supposed that it was operated mainly by the fire or light within the eye, though aided by the light without. The interior of the eye was of fire and water, the exterior coat was a thin layer of earth and air. Colours were brought to the eye as effluvia from objects, and became apprehended as sensations by passing into the alternate pores or ducts of fire and water: white colour was fitted to (or in symmetry with) the pores of fire, black colour with those of water.132 Some animals had the proportions of fire and water in their eyes better adjusted, or more conveniently located, than others: in some, the fire was in excess, or too much on the outside, so as to obstruct the pores or ducts of water: in others, water was in excess, and fire in defect. The latter were the animals which saw better by day than by night, a great force of external light being required to help out the deficiency of light within: the former class of animals saw better by night, because, when there was little light without, the watery ducts were less completely obstructed — or left more free to receive the influx of black colour suited to them.133

Senses of hearing, smell, taste.

In regard to hearing, Empedokles said that the ear was like a bell or trumpet set in motion by the air without; through which motion the solid parts were brought into shock against the air flowing in, and caused the sensation of sound within.134 Smell was, in his view, an adjunct of the respiratory process: persons of acute smell were those who had the strongest breathing: olfactory effluvia came from many bodies, and especially from such as were light and thin. Respecting taste and touch, he gave no further explanation than his general doctrine of effluvia and pores: he seems to have thought that such interpenetration was intelligible by itself, since here was immediate and actual contact. Generally, in respect to all the senses, he laid it down that pleasure ensued when the matter which flows in was not merely fitted in point of structure to penetrate the interior pores or ducts (which was the condition of all sensation), but also harmonious with them in respect to elementary mixture.135

Empedokles declared that justice absolutely forbade the killing of anything that had life. His belief in the metempsychosis. Sufferings of life are an expiation for wrong done during an antecedent life. Pretensions to magic power.

Empedokles held various opinions in common with the Pythagoreans and the brotherhood of the Orphic mysteries — especially that of the metempsychosis. He represented himself as having passed through prior states of existence, as a boy, a girl, a shrub, a bird, and a fish. He proclaims it as an obligation of justice, absolute and universal, not to kill anything that had life: he denounces as an abomination the sacrificing of or eating of an animal, in whom perhaps might dwell the soul of a deceased friend or brother.136 His religious faith, however, and his opinions about Gods, Dæmons, and the human soul, stood apart (mostly in a different poem) from his doctrines on kosmology and physiology. In common with many Pythagoreans, he laid great stress on the existence of Dæmons (of intermediate order and power between Gods and men), some of whom had been expelled from the Gods in consequence of their crimes, and were condemned to pass a long period of exile, as souls embodied in various men or animals. He laments the misery of the human soul, in himself as well as in others, condemned to this long period of expiatory degradation, before they could regain the society of the Gods.137 In one of his remaining fragments, he announces himself almost as a God upon earth, and professes his willingness as well as ability to impart to a favoured pupil the most wonderful gifts — powers to excite or abate the winds, to bring about rain or dry weather, to raise men from the dead.138 He was in fact a man of universal pretensions; not merely an expositor of nature, but a rhetorician, poet, physician, prophet, and conjurer. Gorgias the rhetor had been personally present at his magical ceremonies.139

Complaint of Empedokles on the impossibility of finding out truth.

None of the remaining fragments of Empedokles are more remarkable than a few in which he deplores the impossibility of finding out any great or comprehensive truth, amidst the distraction and the sufferings of our short life. Every man took a different road, confiding only in his own accidental experience or particular impressions; but no man could obtain or communicate satisfaction about the whole.140

Theory of Anaxagoras — denied generation and destruction — recognises only mixture and severance of pre-existing kinds of matter.

Anaxagoras of Klazomenæ, a friend of the Athenian Perikles, and contemporary of Empedokles, was a man of far simpler and less ambitious character: devoted to physical contemplation and geometry, without any of those mystical pretentions common among the Pythagoreans. His doctrines were set forth in prose, and in the Ionic dialect.141 His theory, like all those of his age, was all-comprehensive in its purpose, starting from a supposed beginning, and shewing how heaven, earth, and the inhabitants of earth, had come into those appearances which were exhibited to sense. He agreed with Empedokles in departing from the point of view of Thales and other Ionic theorists, who had supposed one primordial matter, out of which, by various transformations, other sensible things were generated — and into which, when destroyed, they were again resolved. Like Empedokles, and like Parmenides previously, he declared that generation, understood in this sense, was a false and impossible notion: that no existing thing could have been generated, or could be destroyed, or could undergo real transformation into any other thing different from what it was.142 Existing things were what they were, possessing their several inherent properties: there could be no generation except the putting together of these things in various compounds, nor any destruction except the breaking up of such compounds, nor any transformation except the substitution of one compound for another.

Homœomeries — small particles of diverse kinds of matter, all mixed together.

But Anaxagoras did not accept the Empedoklean four elements as the sum total of first substances. He reckoned all the different sorts of matter as original and primæval existences: he supposed them all to lie ready made, in portions of all sizes, whereof there was no greatest and no least.143 Particles of the same sort he called Homœomeries: the aggregates of which formed bodies of like parts; wherein the parts were like each other and like the whole. Flesh, bone, blood, fire,144 earth, water, gold, &c., were aggregations of particles mostly similar, in which each particle was not less flesh, bone, and blood, than the whole mass.

But while Anaxagoras held that each of these Homœomeries145 was a special sort of matter with its own properties, and each of them unlike every other: he held farther the peculiar doctrine, that no one of them could have an existence apart from the rest. Everything was mixed with everything: each included in itself all the others: not one of them could be obtained pure and unmixed. This was true of any portion however small. The visible and tangible bodies around us affected our senses, and received their denominations according to that one peculiar matter of which they possessed a decided preponderance and prominence. But each of them included in itself all the other matters, real and inseparable, although latent.146

First condition of things — all the primordial varieties of matter were huddled together in confusion. Nous, or Reason, distinct from all of them, supervened and acted upon this confused mass, setting the constituent particles in movement.

In the beginning (said Anaxagoras) all things (all sorts of matter) were together, in one mass or mixture. Infinitely numerous and infinite in diversity of magnitude, they were so packed and confounded together that no one could be distinguished from the rest: no definite figure, or colour, or other property, could manifest itself. Nothing was distinguishable except the infinite mass of Air and Æther (Fire), which surrounded the mixed mass and kept it together.147 Thus all things continued for an infinite time in a state of rest and nullity. The fundamental contraries — wet, dry, hot, cold, light, dark, dense, rare, — in their intimate contact neutralised each other.148 Upon this inert mass supervened the agency of Nous or Mind. The characteristic virtue of mind was, that it alone was completely distinct, peculiar, pure in itself, unmixed with anything else: thus marked out from all other things which were indissolubly mingled with each other. Having no communion of nature with other things, it was noway acted upon by them, but was its own master or autocratic, and was of very great force. It was moreover the thinnest and purest of all things; possessing complete knowledge respecting all other things. It was like to itself throughout — the greater manifestations of mind similar to the less.149

Movement of rotation in the mass initiated by Nous on a small scale, but gradually extending itself. Like particles congregate together — distinguishable aggregates are formed.

But though other things could not act upon mind, mind could act upon them. It first originated movement in the quiescent mass. The movement impressed was that of rotation, which first began on a small scale, then gradually extended itself around, becoming more efficacious as it extended, and still continuing to extend itself around more and more. Through the prodigious velocity of this rotation, a separation was effected of those things which had been hitherto undistinguishably huddled together.150 Dense was detached from rare, cold from hot, dark from light, dry from wet.151 The Homœomeric particles congregated together, each to its like; so that bodies were formed — definite and distinguishable aggregates, possessing such a preponderance of some one ingredient as to bring it into clear manifestation.152 But while the decomposition of the multifarious mass was thus carried far enough to produce distinct bodies, each of them specialised, knowable, and regular — still the separation can never be complete, nor can any one thing be “cut away as with a hatchet” from the rest. Each thing, great or small, must always contain in itself a proportion or trace, latent if not manifest, of everything else.153 Nothing except mind can be thoroughly pure and unmixed.

Nothing (except Νοῦς) can be entirely pure or unmixed, but other things may be comparatively pure. Flesh, Bone, &c. are purer than Air or Earth.

Nevertheless other things approximate in different degrees to purity, according as they possess a more or less decided preponderance of some few ingredients over the remaining multitude. Thus flesh, bone, and other similar portions of the animal organism, were (according to Anaxagoras) more nearly pure (with one constituent more thoroughly preponderant and all other coexistent natures more thoroughly subordinate and latent) than the four Empedoklean elements, Air, Fire, Earth, &c.; which were compounds wherein many of the numerous ingredients present were equally effective, so that the manifestations were more confused and complicated. In this way the four Empedoklean elements formed a vast seed-magazine, out of which many distinct developments might take place, of ingredients all pre-existing within it. Air and Fire appeared to generate many new products, while flesh and bone did not.154 Amidst all these changes, however, the infinite total mass remained the same, neither increased nor diminished.155

Theory of Anaxagoras compared with that of Empedokles.

In comparing the theory of Anaxagoras with that of Empedokles, we perceive that both of them denied not only the generation of new matter out of nothing (in which denial all the ancient physical philosophers concurred), but also the transformation of one form of matter into others, which had been affirmed by Thales and others. Both of them laid down as a basis the existence of matter in a variety of primordial forms. They maintained that what others called generation or transformation, was only a combination or separation of these pre-existing materials, in great diversity of ratios. Of such primordial forms of matter Empedokles recognised only four, the so-called Elements; each simple and radically distinct from the others, and capable of existing apart from them, though capable also of being combined with them. Anaxagoras recognised primordial forms of matter in indefinite number, with an infinite or indefinite stock of particles of each; but no one form of matter (except Nous) capable of being entirely severed from the remainder. In the constitution of every individual body in nature, particles of all the different forms were combined; but some one or a few forms were preponderant and manifest, all the others overlaid and latent. Herein consisted the difference between one body and another. The Homœomeric body was one in which a confluence of like particles had taken place so numerous and powerful, as to submerge all the coexistent particles of other sorts. The majority thus passed for the whole, the various minorities not being allowed to manifest themselves, yet not for that reason ceasing to exist: a type of human society as usually constituted, wherein some one vein of sentiment, ethical, æsthetical, religious, political, &c., acquires such omnipotence as to impose silence on dissentients, who are supposed not to exist because they cannot proclaim themselves without ruin.

Suggested partly by the phenomena of animal nutrition.

The hypothesis of multifarious forms of matter, latent yet still real and recoverable, appears to have been suggested to Anaxagoras mainly by the phenomena of animal nutrition.156 The bread and meat on which we feed nourishes all the different parts of our body — blood, flesh, bones, ligaments, veins, trachea, hair, &c. The nutriment must contain in itself different matters homogeneous with all these tissues and organs; though we cannot see such matters, our reason tells us that they must be there. This physiological divination is interesting from its general approximation towards the results of modern analysis.

Chaos common to both Empedokles and Anaxagoras: moving agency, different in one from the other theory.

Both Empedokles and Anaxagoras begin their constructive process from a state of stagnation and confusion both tantamount to Chaos; which is not so much active discord (as Ovid paints it), as rest and nullity arising from the equilibrium of opposite forces. The chaos is in fact almost a reproduction of the Infinite of Anaximander.157 But Anaxagoras as well as Empedokles enlarged his hypothesis by introducing (what had not occurred or did not seem necessary to Anaximander) a special and separate agency for eliciting positive movement and development out of the negative and stationary Chaos. The Nous or Mind is the Agency selected for this purpose by Anaxagoras: Love and Enmity by Empedokles. Both the one and the other initiate the rotatory cosmical motion; upon which follows as well the partial disgregation of the chaotic mass, as the congregation of like particles of it towards each other.

Nous, or mind, postulated by Anaxagoras — how understood by later writers — how intended by Anaxagoras himself.

The Nous of Anaxagoras was understood by later writers as a God;158 but there is nothing in the fragments now remaining to justify the belief that the author himself conceived it in that manner — or that he proposed it (according to Aristotle’s expression159) as the cause of all that was good in the world, assigning other agencies as the causes of all evil. It is not characterised by him as a person — not so much as the Love and Enmity of Empedokles. It is not one but multitudinous, and all its separate manifestations are alike, differing only as greater or less. It is in fact identical with the soul, the vital principle, or vitality, belonging not only to all men and to all plants also.160 It is one substance, or form of matter among the rest, but thinner than all of them (thinner than even fire or air), and distinguished by the peculiar characteristic of being absolutely unmixed. It has moving power and knowledge, like the air of Diogenes the Apolloniate: it initiates movement; and it knows about all the things which either pass into or pass out of combination. It disposes or puts in order all things that were, are, or will be; but it effects this only by acting as a fermenting principle, to break up the huddled mass, and to initiate rotatory motion, at first only on a small scale, then gradually increasing. Rotation having once begun, and the mass having been as it were unpacked and liberated the component Homœomeries are represented as coming together by their own inherent attraction.161 The Anaxagorean Nous introduces order and symmetry into Nature, simply by stirring up rotatory motion in the inert mass, so as to release the Homœomeries from prison. It originates and maintains the great cosmical fact of rotatory motion; which variety of motion, from its perfect regularity and sameness, is declared by Plato also to be the one most consonant to Reason and Intelligence.162 Such rotation being once set on foot, the other phenomena of the universe are supposed to be determined by its influence, and by their own tendencies and properties besides: but there is no farther agency of Nous, which only knows these phenomena as and when they occur. Anaxagoras tried to explain them as well as he could; not by reference to final causes, nor by assuming good purposes of Nous which each combination was intended to answer — but by physical analogies, well or ill chosen, and especially by the working of the grand cosmical rotation.163

Plato and Aristotle blame Anaxagoras for deserting his own theory.

This we learn from Plato and Aristotle, who blame Anaxagoras for inconsistency in deserting his own hypothesis, and in invoking explanations from physical agencies, to the neglect of Nous and its supposed optimising purposes. But Anaxagoras, as far as we can judge by his remaining fragments, seems not to have committed any such inconsistency. He did not proclaim his Nous to be a powerful extra-cosmical Architect, like the Demiurgus of Plato — nor an intra-cosmical, immanent, undeliberating instinct (such as Aristotle calls Nature), tending towards the production and renewal of regular forms and conjunctions, yet operating along with other agencies which produced concomitants irregular, unpredictable, often even obstructive and monstrous. Anaxagoras appears to conceive his Nous as one among numerous other real agents in Nature, material like the rest, yet differing from the rest as being powerful, simple, and pure from all mixture,164 as being endued with universal cognizance, as being the earliest to act in point of time, and as furnishing the primary condition to the activity of the rest by setting on foot the cosmical rotation. The Homœomeries are coeternal with, if not anterior to, Nous. They have laws and properties of their own, which they follow, when once liberated, without waiting for the dictation of Nous. What they do is known by, but not ordered by, Nous.165 It is therefore no inconsistency in Anaxagoras that he assigns to mind one distinct and peculiar agency, but nothing more; and that when trying to explain the variety of phenomena he makes reference to other physical agencies, as the case seems to require.166

Astronomy and physics of Anaxagoras.

In describing the formation of the Kosmos, Anaxagoras supposed that, as a consequence of the rotation initiated by mind, the primitive chaos broke up. “The Dense, Wet, Cold, Dark, Heavy, came together into the place where now Earth is: Hot, Dry, Bare, Light, Bright, departed to the exterior region of the revolving Æther.”167 In such separation each followed its spontaneous and inherent tendency. Water was disengaged from air and clouds, earth from water: earth was still farther consolidated into stones by cold.168 Earth remained stationary in the centre, while fire and air were borne round it by the force and violence of the rotatory movement. The celestial bodies — Sun, Moon, and Stars — were solid bodies analogous to the earth, either caught originally in the whirl of the rotatory movement, or torn from the substance of the earth and carried away into the outer region of rotation.169 They were rendered hot and luminous by the fiery fluid in the rapid whirl of which they were hurried along. The Sun was a stone thus made red-hot, larger than Peloponnesus: the Moon was of earthy matter, nearer to the Earth, deriving its light from the Sun, and including not merely plains and mountains, but also cities and inhabitants.170 Of the planetary movements, apart from the diurnal rotation of the celestial sphere, Anaxagoras took no notice.171 He explained the periodical changes in the apparent course of the sun and moon by resistances which they encountered, the former from accumulated and condensed air, the latter from the cold.172 Like Anaximenes and Demokritus, Anaxagoras conceived the Earth as flat, round in the surface, and not deep, resting on and supported by the air beneath it. Originally (he thought) the earth was horizontal, with the axis of celestial rotation perpendicular, and the north pole at the zenith, so that this rotation was then lateral, like that of a dome or roof; it was moreover equable and unchanging with reference to every part of the plane of the earth’s upper surface, and distributed light and heat equally to every part. But after a certain time the Earth tilted over of its own accord to the south, thus lowering its southern half, raising the northern half, and causing the celestial rotation to appear oblique.173

His geology, meteorology, physiology.

Besides these doctrines respecting the great cosmical bodies, Anaxagoras gave explanations of many among the striking phenomena in geology and meteorology — the sea, rivers, earthquakes, hurricanes, hail, snow, &c.174 He treated also of animals and plants — their primary origin, and the manner of their propagation.175 He thought that animals were originally produced by the hot and moist earth; but that being once produced, the breeds were continued by propagation. The seeds of plants he supposed to have been originally contained in the air, from whence they fell down to the warm and moist earth, where they took root and sprung up.176 He believed that all plants, as well as all animals, had a certain measure of intelligence and sentiment, differing not in kind but only in degree from the intelligence and sentiment of men; whose superiority of intelligence was determined, to a great extent, by their possession of hands.177 He explained sensation by the action of unlike upon unlike (contrary to Empedokles, who referred it to the action of like upon like),178 applying this doctrine to the explanation of the five senses separately. But he pronounced the senses to be sadly obscure and insufficient as means of knowledge. Apparently, however, he did not discard their testimony, nor assume any other means of knowledge independent of it, but supposed a concomitant and controlling effect of intelligence as indispensable to compare and judge between the facts of sense when they appeared contradictory.179 On this point, however, it is difficult to make out his opinions.

The doctrines of Anaxagoras were regarded as offensive and impious.

Anaxagoras, residing at Athens and intimately connected with Perikles, incurred not only unpopularity, but even legal prosecution, by the tenor of his philosophical opinions, especially those on astronomy. To Greeks who believed in Helios and Selênê as not merely living beings but Deities, his declaration that the Sun was a luminous and fiery stone, and the Moon an earthy mass, appeared alike absurd and impious. Such was the judgment of Sokrates, Plato, and Xenophon, as well as of Aristophanes and the general Athenian public.180 Anaxagoras was threatened with indictment for blasphemy, so that Perikles was compelled to send him away from Athens.

That physical enquiries into the nature of things, and attempts to substitute scientific theories in place of the personal agency of the Gods, were repugnant to the religious feelings of the Greeks, has been already remarked.181 Yet most of the other contemporary philosophers must have been open to this reproach, not less than Anaxagoras; and we learn that the Apolloniate Diogenes left Athens from the same cause. If others escaped the like prosecution which fell upon Anaxagoras, we may probably ascribe this fact to the state of political party at Athens, and to the intimacy of the latter with Perikles. The numerous political enemies of that great man might fairly hope to discredit him in the public mind — at the very least to vex and embarrass him — by procuring the trial and condemnation of Anaxagoras. Against other philosophers, even when propounding doctrines not less obnoxious respecting the celestial bodies, there was not the same collateral motive to stimulate the aggressive hostility of individuals.

Diogenes of Apollonia recognises one primordial element.

Contemporary with Anaxagoras — yet somewhat younger, as far as we can judge, upon doubtful evidence — lived the philosopher Diogenes, a native of Apollonia in Krete. Of his life we know nothing except that he taught during some time at Athens, which city he was forced to quit on the same ground as Anaxagoras. Accusations of impiety were either brought or threatened against him:182 physical philosophy being offensive generally to the received religious sentiment, which was specially awakened and appealed to by the political opponents of Perikles.

Diogenes the Apolloniate, the latest in the series of Ionic philosophers or physiologists, adopted, with modifications and enlargements, the fundamental tenet of Anaximenes. There was but one primordial element — and that element was air. He laid it down as indisputable that all the different objects in this Kosmos must be at the bottom one and the same thing: unless this were the fact, they would not act upon each other, nor mix together, nor do good and harm to each other, as we see that they do. Plants would not grow out of the earth, nor would animals live and grow by nutrition, unless there existed as a basis this universal sameness of nature. No one thing therefore has a peculiar nature of its own: there is in all the same nature, but very changeable and diversified.183

Air was the primordial, universal element.

Now the fundamental substance, common to all, was air. Air was infinite, eternal, powerful; it was, besides, full of intelligence and knowledge. This latter property Diogenes proved by the succession of climatic and atmospheric phenomena of winter and summer, night and day, rain, wind, and fine weather. All these successions were disposed in the best possible manner by the air: which could not have laid out things in such regular order and measure, unless it had been endowed with intelligence. Moreover, air was the source of life, soul, and intelligence, to men and animals: who inhaled all these by respiration, and lost all of them as soon as they ceased to respire.184