It is obvious that all sense has gone out of modern marriage; which is, however, no objection to marriage but to modernity.

Those you cannot teach to fly, teach to fall faster.

But this people has deliberately made itself stupid, for nearly a millennium: nowhere have the two great European narcotics, alcohol and Christianity, been abused more dissolutely.

Mathematics would certainly have not come into existence if one had known from the beginning that there was in nature no exactly straight line, no actual circle, no absolute magnitude.

In Christianity neither morality nor religion come into contact with reality at any point.

I have been casting shadows all my life without caring about how deeply they stain my soul.

One's own self is well hidden from one's own self; of all mines of treasure, one's own is the last to be dug up.