Meditations by Marcus Aurelius Book 8 Page 18

own peace and tranquillity, and not to suppose that pain is evil. For all judgment and deliberation; all prosecution, or aversation is from within, whither the sense of evil (except it be let in by opinion) cannot penetrate.

XXVII. Wipe off all idle fancies, and say unto thyself incessantly; Now if I will, it is in my power to keep out of this my soul all wickedness, all lust, and concupiscences, all trouble and confusion. But on the contrary to behold and consider all things according to their true nature, and to carry myself towards everything according to its true worth. Remember then this thy power that nature hath given thee.

XXVIII. Whether thou speak in the Senate or whether thou speak to any particular, let thy speech In always grave and modest. But thou must not openly