Meditations 5.10

Things are in such a kind of envelopment that they have seemed to philosophers, not a few nor those common philosophers, altogether unintelligible; nay even to the Stoics themselves they seem difficult to understand. And all our assent is changeable; for where is the man who never changes? Carry thy thoughts then to the objects themselves, and consider how short-lived they are and worthless, and that they may be in the possession of a filthy wretch or a whore or a robber. Then turn to the morals of those who live with thee, and it is hardly possible to endure even the most agreeable of them, to say nothing of a man being hardly able to endure himself. In such darkness then and dirt, and in so constant a flux both of substance and of time, and of motion and of things moved, what there is worth being highly prized, or even an object of serious pursuit, I cannot imagine. But on the contrary it is a man's duty to comfort himself, and to wait for the natural dissolution, and not to be vexed at the delay, but to rest in these principles only: the one, that nothing will happen to me which is not conformable to the nature of the universe; and the other, that it is in my power never to act contrary to my god and daemon: for there is no man who will compel me to this.

Marcus Aurelius, Meditations 5.10, translated by George Long

Things are in a sense so wrapped up in mystery that not a few philosophers, and they no ordinary ones, have concluded that they are wholly beyond our comprehension: nay, even the Stoics themselves find them hard to comprehend. Indeed every assent we give to the impressions of our senses is liable to error, for where is the man who never errs? Pass on then to the objective things themselves, how transitory they are, how worthless, the property, quite possibly, of a boy-minion, a harlot, or a brigand. After that turn to the characters of thine associates, even the most refined of whom it is difficult to put up with, let alone the fact that a man has enough to do to endure himself.

What then there can be amid such murk and nastiness, and in so ceaseless an ebbing of substance and of time, of movement and things moved, that deserves to be greatly valued or to excite our ambition in the least, I cannot even conceive. On the contrary, a man should take heart of grace to await his natural dissolution, and without any chafing at delay comfort himself with these twin thoughts alone: the one, that nothing will befall me that is not in accord with the Nature of the Universe; the other, that it is in my power to do nothing contrary to the God and the 'genius' within me. For no one can force me to disobey that.

Marcus Aurelius, Meditations 5.10, translated by C. R. Haines