Lives of Eminent Philosophers (2.5.29-2.5.33)

He showed equal ability in both directions, in persuading and dissuading men; thus, after conversing with Theaetetus about knowledge, he sent him away, as Plato says, fired with a divine impulse; but when Euthyphro had indicted his father for manslaughter, Socrates, after some conversation with him upon piety, diverted him from his purpose. Lysis, again, he turned, by exhortation, into a most virtuous character. For he had the skill to draw his arguments from facts. And when his son

He roused Iphicrates the general to a martial spirit by showing him how the fighting cocks of Midias the barber flapped their wings in defiance of those of Callias. Glauconides demanded that he should be acquired for the state as if he were some pheasant or peacock.

He used to say it was strange that, if you asked a man how many sheep he had, he could easily tell you the precise number; whereas he could not name his friends or say how many he had, so slight was the value he set upon them. Seeing Euclides keenly interested in eristic arguments, he said to him: You will be able to get on with sophists, Euclides, but with men not at all. For he thought there was no use in this sort of hair-splitting, as Plato shows us in the Euthydemus.

Again, when Charmides offered him some slaves in order that he might derive an income from them, he declined the offer; and according to some he scorned the beauty of Alcibiades. He would extol leisure as the best of possessions, according to Xenophon in the Symposium. There is, he said, only one good, that is, knowledge, and only one evil, that is, ignorance; wealth and good birth bring their possessor no dignity, but on the contrary evil. At all events, when some one told him that Antisthenes’ mother

Moreover, in his old age he learnt to play the lyre, declaring that he saw no absurdity in learning a new accomplishment. As Xenophon relates in the Symposium, it was his regular habit to dance, thinking that such exercise helped to keep the body in good condition. He used to say that his supernatural sign warned him beforehand of the future; that to make a good start was no trifling advantage, but a trifle turned the scale; and that he knew nothing except just the fact of his ignorance. He said that, when people paid a high price for fruit which had ripened early, they must despair of seeing the fruit ripen at the proper season. And, being once asked in what consisted the virtue of a young man, he said, In doing nothing to excess. He held that geometry should be studied to the point at which a man is able to measure the land which he acquires or parts with.

On hearing the line of Euripides’ play Auge where the poet says of virtue:

’Tis best to let her roam at will,[*]