envious people were devoured by their own disposition, just as iron is by rust.” Another was, “That those who wish to be immortal ought to live piously and justly.” He used to say too, “That cities were ruined when they were unable to distinguish worthless citizens from virtuous ones.”
On one occasion he was being praised by some wicked men, and said, “I am sadly afraid that I must have done some wicked thing.” One of his favourite sayings was, “That the fellowship of brothers of one mind was stronger than any fortified city.” He used to say, “That those things were the best for a man to take on a journey, which would float with him if he were shipwrecked.” He was once reproached for being intimate with wicked men, and said, “Physicians also live with those who are sick; and yet they do not catch fevers.” He used to say, “that it was an absurd thing to clean a cornfield of tares, and in war to get rid of bad soldiers, and yet not to rid one’s self in a city of the wicked citizens.” When he was asked what advantage he had ever derived from philosophy, he replied, “The advantage of being able to converse with myself.” At a drinking party, a man once said to him, “Give us a song,” and he replied, “Do you play us a tune on the flute.” When Diogenes asked him for a tunic, he bade him fold his cloak. He was asked on one occasion what learning was the most necessary, and he replied, “To unlearn one’s bad habits.” And he used to exhort those who found themselves ill spoken of, to endure it more than they would any one’s throwing stones at them.