From Samuel Butler’s notebooks, 1912:

Those who die suddenly and without warning not only never die (in the sense in which no man ever dies to himself), but never even think they are going to die soon. A man knocked to pieces by a passing train while greasing wheel-boxes does not even leave off greasing wheel-boxes so far as he is himself concerned, but goes on greasing them for ever and ever for such an infinity of time as is practically no time at all. Or how about one who eats a good dinner and goes to sleep after it too near a charcoal fire of which he knew nothing?

Related: You will never enter the grave.