Military necessity does not admit of cruelty - that is, the infliction of suffering for the sake of suffering or for revenge, . . . nor of torture to extort confessions.
For it must be noted, that men must either be caressed or else annihilated; they will revenge themselves for small injuries, but cannot do so for great ones; the injury therefore that we do to a man must be such that we need not fear his vengeance.
The death penalty fulfills a preventive function, but it is also very clearly a form of revenge. It is an especially severe form of punishment because it is so final. The human life is ended and the executed person is deprived of the opportunity to change, to restore the harm done or compensate for it.
A wrong is unredressed when retribution overtakes its redresser. It is equally unredressed when the avenger fails to make himself felt as such to him who has done the wrong.
The nephew revenges himself for this, by holding his breath and terrifying his kinswoman with the dread belief that he has made up his mind to burst. Regardless of whispers and shakes, he swells and becomes discoloured, and yet again swells and becomes discoloured, until the aunt can bear it no longer, but leads him out, with no visible neck, and with his eyes going before him like a prawn's.