Once when Xenocrates came into Plato's house, the latter bade him scourge his slave for him, explaining that he could not do it himself, because he was angry. Again, he said to one of his slaves, "You would have had a beating if I were not angry."
Aristippus
Dionysius once asked him why it is that the philosophers are seen at rich men's doors, not the rich men at the doors of the sages. Aristippus replied, "Because the wise realize what they lack, but the rich do not." On a repetition of the taunt on another occasion he retorted, "Yes, and physicians are seen at sick men's doors; yet none would choose to be the patient rather than the leech!"
Once when overtaken by a storm on a voyage to Corinth, he was badly frightened. Somebody said to him, "We ordinary folk are not afraid, but you philosophers play the coward." "Yes," was his reply, "we are not risking the loss of any such wretched life as yours."
Some one reproached him for his extravagance in food. He answered, "If you could buy these same things for threepence, wouldn't you do it?"—"Oh yes."—"Why then, 'tis not I who am too fond of the luxurious food, but you that are over-fond of your money!"
Aristotle
When asked, "What is Hope?" he answered, "The dream of a man awake." Asked what grows old quickest, he replied, "Gratitude." When told that some one had slandered him in his absence, he said, "He may beat me too—in my absence!" Being asked how much advantage the educated have over the ignorant, he replied, "As much as the living over the dead."
Some one asked him why we spend much time in the society of the beautiful. "That," he said, "is a proper question for a blind man!" [Cf. Emerson's 'Rhodora.']
Once being asked how we should treat our friends, he said, "As we would wish them to treat us." Asked what a friend is, he answered, "One soul abiding in two bodies."