Note 14 — ERRATA.

Hume, in his famous sketch of the Human Understanding, makes all the perceptions of the human mind resolve themselves into two distinct kinds: impressions and ideas. "The difference between them consists in the degrees of force and liveliness with which they strike upon the mind, and make their way into our thought and consciousness. Those perceptions which enter with the most force and violence we may name impressions, and under this name include all our sensations, passions, and emotions, as they make their first appearance in the soul. By ideas, I mean the faint images of these in thinking and reasoning." "The identity which we ascribe to the mind of man is only a fictitious one."

From this we see that his stand-point is that of "sensuous ideas," the first stage of reflection. The second or third stage of reflection, if consistent, would not admit the reality to be the object of sense-impressions, and the abstract ideas to be only "faint images." One who holds, like Herbert Spencer, that persistent force is the ultimate reality—"the sole truth, which transcends experience by underlying it"—ought to hold that the generalization which reaches the idea of unity of force is the truest and most adequate of thoughts. And yet Herbert Spencer holds substantially the doctrine of Hume, in the words: "We must predicate nothing of objects too great or too multitudinous to be mentally represented, or we must make our predications by means of extremely inadequate representations of such objects—mere symbols of them." (Page 27 of "First Principles.")