" imagine the most terrible part of the whole punishment is, not the bodily pain at all—but the certain knowledge that in an hour,—then in ten minutes, then in half a minute, then now—this very instant—your soul must quit your body and that you will no longer be a man—and that this is certain, certain! That's the point—the certainty of it. Just that instant when you place your head on the block and hear the iron grate over your head—then—that quarter of a second is the most awful of all. "

― Fyodor Dostoevsky , The Idiot