“What an idle fancy it is to expect to die of a decay of powers brought on by extreme old age, and to set ourselves this term for our duration, since that is the rarest of all deaths and the least customary! We call it alone natural, as if it were contrary to nature to see a man break his neck by a fall, be drowned in a shipwreck, or be snatched away by the plague or a pleurisy, and as if our ordinary condition did not expose us to all these mishaps.” (I:57, 236, Frame)