The Enchiridion (42-44)

When any person does ill by you, or speaks ill of you, remember that he acts or speaks from an impression that it is right for him to do so. Now, it is not possible that he should follow what appears right to you, but only what appears so to himself. Therefore, if he judges from false appearances, he is the

Everything has two handles: one by which it may be borne, another by which it cannot. If your brother acts unjustly, do not lay hold on the affair by the handle of his injustice, for by that it cannot be borne; but rather by the opposite, that he is your brother, that he was brought up with you; and thus you will lay hold on it as it is to be borne.

These reasonings have no logical connection: I am richer than you; therefore I am your superior. I am more eloquent than you; therefore I am your superior. The true logical connection is rather this: I am richer than you; therefore my possessions must exceed yours. I am more eloquent than you; therefore my style must surpass yours. But you, after all, consist neither in property nor in style.