Marcus Aurelius

Meditations 4.5

Translation

Death is such as generation is, a mystery of nature; composition out of the same elements, and a decomposition into the same; and altogether not a thing of which any man should be ashamed, for it is not contrary to [the nature of] a reasonable animal, and not contrary to the reason of our constitution.

Marcus Aurelius, Meditations 4.5, translated by George Long