Marcus Aurelius: “As thou thyself art a component part of a social system, so let every act of thine be a component part of social life.”

For every judgment and movement and desire and aversion is within, and no evil ascends so high.

It is thy duty to leave another man's wrongful act there where it is (vii. 29; ix. 38).

Be cheerful also, and seek not external help nor the tranquillity which others give.

Further, I owe it to the gods that I was not hurried into any offence against any of them, though I had a disposition which, if opportunity had offered, might have led me to do something of this kind; but, through their favor, there never…