To die proudly when it is no longer possible to live proudly. Death of one's own free choice, death at the proper time, with a clear head and with joyfulness, consummated in the midst of children and witnesses: so that an actual leave-taking is possible while he who is leaving is still there.
Friedrich NietzscheNatural death is independent of all reason and is really an irrational death, in which the pitiable substance of the shell determines how long the kernel is to exist or not; in which, accordingly, the stunted, diseased and dull witted jailer is lord, and indicates the moment at which his distinguished prisoner shall die.
Friedrich Nietzsche