Letter 71 — On the Supreme Good (§7)

“Socrates, who recalled the whole of philosophy to rules of conduct, and asserted that the highest wisdom consisted in distinguishing between good and evil, said: “Follow these rules, if my words carry weight with you, in order that you may be happy; and let some men think you even a fool. Allow any man who so desires to insult you and work you wrong; but if only virtue dwells with you, you will suffer nothing.”