Seneca · On the futility of planning ahead
Letters 101.15
Many men have been prepared to enter upon still more shameful bargains: to betray friends in order to live longer themselves, or voluntarily to debase their children and so enjoy the light of day which is witness of all their sins. We must get rid of this craving for life, and learn that it makes no difference when your suffering comes, because at some time you are bound to suffer. The point is, not how long you live, but how nobly you live. And often this living nobly means that you cannot live long. Farewell.
Seneca, Letters to Lucilius 101.15, translated by Richard Mott Gummere