Shall I be put out if one of those who do business at the temple of Castor, buying and selling worthless slaves, does not return my salute, a man whose shops are crowded with throngs of the worst of bondmen? I trow not; for what good can there be in a man who owns none but bad men? As the wise man is indifferent to the courtesy or incivility of such a man, so is he to that of a king. “You own,” says he, “the Parthians and Bactrians, but they are men whom you keep in order by fear, they are people whose possession forbids you to unstring the bow, they are fierce enemies, on sale, and eagerly looking out for a new master.” He will not, then, be moved by an insult from any man for though all men differ one from another, yet the wise man regards them all as alike on account of their equal folly; for should he once lower himself to the point of being affected by either injury or insult, he could never feel safe afterwards, and safety is the especial advantage of the wise man, and he will not be guilty of showing respect to the man who has done him an injury by admitting that he has received one, because it necessarily follows that he who is disquieted at anyone’s scorn would value that person’s admiration.