They also teach that men ought to live simply, using only plain food in moderate quantities, wearing nothing but a cloak, and despising riches, and glory, and nobleness of birth; accordingly some of them feed upon nothing beyond herbs and cold water, living in any shelter that they can find, or in tubs as Diogenes did; for he used to say that it was the peculiar property of the Gods to want nothing, and that, therefore, when a man wished for nothing he was like the Gods.
Another of their doctrines is, that virtue is a thing which may be taught, as Antisthenes affirms in his Heraclides; and that when it has once been attained it can never be lost. They also say that the wise man deserves to be loved, and cannot commit error, and is a friend to every one who resembles him, and that he leaves nothing to fortune. And everything which is unconnected with either virtue or vice they call indifferent, agreeing in this with Aristo, the Chian.
These then were the Cynics; and now we must pass on to the Stoics, of which sect the founder was Zeno, who had been a disciple of Crates.