The familiarity of superiors embitters one, because it may not be returned.

Those people have no real interest in a science who only begin to get excited about it when they themselves have made discoveries in it.

Pain makes hens and poets cackle.

Modern science has as its object as little pain as possible, as long a life as possible - hence a sort of eternal blessedness, but of a very limited kind in comparison with the promises of religion.

Immortal is the moment when I engendered the recurrence. For the sake of this moment I bear the recurrence.

The word 'Christianity' is already a misunderstanding - in reality there has been only one Christian, and he died on the Cross.

Man is at his furthest remove from the animal as a child, his intellect most human. With his fifteenth year and puberty he comes astep closer to the animal; with the sense of possessions of his thirties (the median line between laziness and greediness), still another step. In his sixtieth year of life he frequently loses his modesty as well, then the septuagenarian steps up to us as a completely unmasked beast: one need only look at the eyes and the teeth.