On Anger: Book 2 30 : 1

Some offences we ourselves witness: in these cases let us examine the disposition and purpose of the offender. Perhaps he is a child; let us pardon his youth, he knows not whether he is doing wrong: or he is a father; he has either rendered such great services, as to have won the right even to wrong ns—or perhaps this very act which offends us is his chief merit: or a woman; well, she made a mistake. The man did it because he was ordered to do it. Who but an unjust person can be angry with what is done under compulsion? You had hurt him: well, there is no wrong in suffering the pain which you have been the first to inflict. Suppose that your opponent is a judge; then you ought to take his opinion rather than your own: or that he is a king; then, if he punishes the guilty, yield to him because he is just, and if he punishes the innocent, yield to him because he is powerful. Suppose that it is a dumb animal or as stupid as a dumb animal: then, if you are angry with it, you will make yourself like it. Suppose that it is a disease or a misfortune; it will take less effect upon you if you bear it quietly: or that it is a god; then you waste your time by being angry with him as much as if you prayed him to be angry with someone else. Is it a good man who has wronged you? do not believe it: is it a bad one? do not be surprised at this; he will pay to someone else the penalty which he owes to you—indeed, by his sin he has already punished himself.