Book VII · Chapter 26

When a man has done thee any wrong, immediately consider with what opinion about good or evil he has done wrong. For when thou hast seen this, thou wilt pity him, and wilt neither wonder nor be angry. For either thou thyself thinkest the same thing to be good that he does, or another thing of the same kind. It is thy duty then to pardon him. But if thou dost not think such things to be good or evil, thou wilt more readily be well disposed to him who is in error.