Note 76 — Chapter XXV · PHÆDON.

See Sir William Hamilton, Discussions on Philosophy, Appendix, p. 585. The debates about what was meant in philosophy by the word Cause are certainly older than Plato. We read that it was discussed among the philosophers who frequented the house of Perikles; and that that eminent statesman was ridiculed by his dissolute son Xanthippus for taking part in such useless refinements (Plutarch, Perikles, c. 36). But the Platonic dialogues are the oldest compositions in which any attempts to analyse the meaning of the word are preserved to us.

Αἴτιαι, Ἀρχαί, Στοιχεῖα (Aristot. Metaph. Δ.), were the main objects of search with the ancient speculative philosophers. While all of them set to themselves the same problem, each of them hit upon a different solution. That which gave mental satisfaction to one, appeared unsatisfactory and even inadmissible to the rest. The first book of Aristotle’s Metaphysica gives an instructive view of this discrepancy. His own analysis of Cause will come before us hereafter. Compare the long discussions on the subject in Sextus Empiricus, Pyrrhon. Hypo. iii. 13-30; and adv. Mathemat. ix. 195-250. The discrepancy was so great among the dogmatical philosophers, that he pronounces the reality of the causal sequence to be indeterminable — ὅσον μὲν οὖν ἐπὶ τοῖς λεγομένοις ὑπὸ τῶν δογματικῶν, οὐδ’ ἂν ἐννοῆσαί τις τὸ αἴτιον δύναιτο, εἴ γε πρὸς τῷ διαφώνους καὶ ἀλλοκότους (ἀποδιδόναι) ἐννοίας τοῦ αἰτίου ἔτι καὶ τὴν ὑπόστασιν αὐτοῦ πεποιήκασιν ἀνεύρετον διὰ τὴν περὶ αὐτὸ διαφωνίαν. Seneca (Epist. 65) blends together the Platonic and the Aristotelian views, when he ascribes to Plato a quintuple variety of Causa.

The quadruple variety of Causation established by Aristotle governed the speculations of philosophers during the middle ages. But since the decline of the Aristotelian philosophy, there are few subjects which have been more keenly debated among metaphysicians than the Idea of Cause. It is one of the principal points of divergence among the different schools of philosophy now existing. A volume, and a very instructive volume, might be filled with the enumeration and contrast of the different theories on the subject. Upon the view which a man takes on this point will depend mainly the scope or purpose which he sets before him in philosophy. Many seek the solution of their problem in transcendental, ontological, extra-phenomenal causes, lying apart from and above the world of fact and experience; Reid and Stewart, while acknowledging the existence of such causes as the true efficient causes, consider them as being out of the reach of human knowledge; others recognise no true cause except personal, quasi-human, voluntary, agency, grounded on the type of human volition. Others, again, with whom my own opinion coincides, following out the analysis of Hume and Brown, understand by causes nothing more than phenomenal antecedents constant and unconditional, ascertainable by experience and induction. See the copious and elaborate chapter on this subject in Mr. John Stuart Mill’s ‘System of Logic,’ Book iii. ch. 5, especially as enlarged in the fourth, fifth, and sixth editions of that work, including the criticism on the opposite or volitional theory of Causation; also the work of Professor Bain, ‘The Emotions and the Will,’ pp. 472-584. The opposite view, in which Causes are treated as something essentially distinct from Laws, and as ultra-phenomenal, is set forth by Dr. Whewell, ‘Novum Organon Renovatum,’ ch. vii. p. 118 seq.