Letters 36.10

And yet, if you are possessed by so great a craving for a longer life, reflect that none of the objects which vanish from our gaze and are re-absorbed into the world of things, from which they have come forth and are soon to come forth again, is annihilated; they merely end their course and do not perish. And death, which we fear and shrink from, merely interrupts life, but does not steal it away; the time will return when we shall be restored to the light of day; and many men would object to this, were they not brought back in forgetfulness of the past.

Seneca, Letters to Lucilius 36.10, translated by Richard Mott Gummere