Diogenes Laertius Vitae philosophorum 6.1.10

[10] For he fell in with some youths from Pontus whom the fame of Socrates had brought to Athens, and he led them off to Anytus, whom he ironically declared to be wiser than Socrates; whereupon (it is said) those about him with much indignation drove Anytus out of the city. If he saw a woman anywhere decked out with ornaments, he would hasten to her house and bid her husband bring out his horse and arms, and then, if the man possessed them, let his extravagance alone, for (he said) the man could with these defend himself; but, if he had none, he would bid him strip off the finery.

Favourite themes ¹ with him were the following. He would prove that virtue can be taught; that nobility belongs to none other than the virtuous.