Meditations by Marcus Aurelius Book 9 Page 19

XXIV. Infinite are the troubles and miseries, that thou hast already been put to, by reason of this only, because that for all happiness it did not suffice thee, or, that thou didst not account it sufficient happiness, that thy understanding did operate according to its natural constitution.

XXV. When any shall either impeach thee with false accusations, or hatefully reproach thee, or shall use any such carriage towards thee, get thee presently to their minds and understandings, and look in them, and behold what manner of men they be.

Thou shalt see, that there is no such occasion why it should trouble thee, what such as they are think of thee. Yet must thou love them still, for by nature they are thy friends. And the Gods themselves, in those things that they seek from them as matters