Marcus Aurelius
Meditations 5.3
Judge every word and deed which are according to nature to be fit for thee; and be not diverted by the blame which follows from any people, nor by their words, but if a thing is good to be done or said, do not consider it unworthy of thee. For those persons have their peculiar leading principle and follow their peculiar movement; which things do not thou regard, but go straight on, following thy own nature and the common nature; and the way of both is one.
Marcus Aurelius, Meditations 5.3, translated by George Long
Deem no word or deed that is in accord with Nature to be unworthy of thee, and be not plucked aside by the consequent censure of others or what they say, but if a thing is good to do or say, judge not thyself unworthy of it. For those others have their own ruling Reason and follow their own bent. Do not thou turn thine eyes aside, but keep to the straight path, following thy own and the universal Nature; and the path of these twain is one.
Marcus Aurelius, Meditations 5.3, translated by C. R. Haines