Meditations 2.4

Remember how long thou hast been putting off these things, and how often thou hast received an opportunity from the gods, and yet dost not use it. Thou must now at last perceive of what universe thou art a part, and of what administrator of the universe thy existence is an efflux, and that a limit of time is fixed for thee, which if thou dost not use for clearing away the clouds from thy mind, it will go and thou wilt go, and it will never return.

Marcus Aurelius, Meditations 2.4, translated by George Long

Call to mind how long thou deferrest these things, and how many times thou hast received from the Gods grace of the appointed day and thou usest it not. Yet now, if never before, shouldest thou realize of what Universe thou art a part, and as an emanation from what Controller of that Universe thou dost subsist; and that a limit has been set to thy time, which if thou use not to let daylight into thy soul, it will be gone—and thou!—and never again shall the chance be thine.

Marcus Aurelius, Meditations 2.4, translated by C. R. Haines