Letters 77.11

No one is so ignorant as not to know that we must at some time die; nevertheless, when one draws near death, one turns to flight, trembles, and laments. Would you not think him an utter fool who wept because he was not alive a thousand years ago? And is he not just as much of a fool who weeps because he will not be alive a thousand years from now? It is all the same; you will not be, and you were not. Neither of these periods of time belongs to you.

Seneca, Letters to Lucilius 77.11, translated by Richard Mott Gummere