Before parting with the _Phædo_, we must be allowed to cite one passage, describing the earlier career of Socrates as a philosopher, because it has always seemed to us the true key to the understanding of the widely different views taken by Aristophanes and Plato of the real character of Socrates. The passage occurs in p. 96, A., and is rendered by Mr. Jowett thus: 'When I was young, Cebes, I had a prodigious desire to know that department of philosophy which is called Natural Science; this appeared to me to have lofty aims, as being the science which has to do with the causes of things, and which teaches why a thing is, and is created and destroyed; and I was always agitating myself with the consideration of such questions as these: Is the growth of animals the result of some decay which the hot and cold principle [principles] contract, as some have said? Is the blood the element with which we think, or the air, or the fire? or perhaps nothing of this sort--but the brain may be the originating power of the perceptions of hearing, and sight, and smell, and memory, and opinion may come from them, and science may be based on memory and opinion when no longer in motion, but at rest.... Then I heard (p. 97, B.) some one who had a book of Anaxagoras, as he said, out of which he read that mind was the disposer and cause of all, and I was quite delighted at the notion of this, which appeared admirable, and I said to myself, If mind is the disposer, mind will dispose all for the best, and put each particular in the best place; and I argued that if any one desired to find out the cause of the generation or destruction or existence of anything, he must find out what state of being or suffering or doing was best for that thing, and therefore a man had only to consider the best for himself and others, and then he would also know the worse, for that the same science comprised both. And I rejoiced to think that I had found in Anaxagoras a teacher of the causes of existence such as I desired, and I imagined that he would tell me first whether the earth is flat or round; and then he would further explain the cause and the necessity of this, and would teach me the nature of the best, and show that this was best; and if he said that the earth was in the centre, he would explain that this position was the best, and I should be satisfied if this were shown to me, and not want any other sort of cause.'