Meditations 8.12

When thou risest from sleep with reluctance, remember that it is according to thy constitution and according to human nature to perform social acts, but sleeping is common also to irrational animals. But that which is according to each individual's nature is also more peculiarly its own, and more suitable to its nature, and indeed also more agreeable.

Marcus Aurelius, Meditations 8.12, translated by George Long

When thou art loth to get up, call to mind that the due discharge of social duties is in accordance with thy constitution and in accordance with man's nature, while even irrational animals share with us the faculty of sleep; but what is in accordance with the nature of the individual is more congenial, more closely akin to him, aye and more attractive.

Marcus Aurelius, Meditations 8.12, translated by C. R. Haines