AT the conceit and apprehension that such and such a one hath sinned, thus reason with thyself, What do I know whether this be a sin indeed, as it seems to be? But if it be, what do I know but that he himself hath already condemned himself for it? And that is all one as if a man should scratch and tear his own face, an object of compassion rather than of anger.
MARCUS AURELIUS. MEDITATIONS. Book xii. 12.
WHEN any person doth ill by you, or speaks ill of you, remember that he acts or speaks from a supposition of its being his duty. Now, it is not possible that he should follow what appears right to you, but what appears so to himself. Therefore, if he judges from a wrong appearance, he is the person hurt, since he too is the person deceived. For if anyone should suppose a true proposition to be false, the proposition is not hurt, but he who is deceived about it.
EPICTETUS. MANUAL. 42.