Letters 30.17

A man is threatened with death by an enemy, but this form of death is anticipated by an attack of indigestion. And if we are willing to examine critically the various causes of our fear, we shall find that some exist, and others only seem to be. We do not fear death; we fear the thought of death. For death itself is always the same distance from us; wherefore, if it is to be feared at all, it is to be feared always. For what season of our life is exempt from death?

Seneca, Letters to Lucilius 30.17, translated by Richard Mott Gummere