The usual false conclusions of mankind are these: a thing exists, therefore it has a right to exist.

They climb the mountain like beasts, stupid and sweating; it seems that no one bothered to tell them that there are beautiful vistas along the way.

The earth has become small, and on it hops the last man, who makes everything small. His race can no more be exterminated than the flea can be. The last man lives the longest.

Christianity has taken the part of all the weak, the low, the botched; it has made an ideal out of antagonism to all the self preservative instincts of sound life; it has corrupted even the faculties of those natures that are intellectually most vigorous, by representing the highest intellectual values as sinful, as misleading, as full of temptation.

The idealist is incorrigible: if he is thrown out of his heaven he makes an ideal of his hell.

Probability but no truth, facility but no freedom--it is owing to these two fruits that the tree of knowledge cannot be confused with the tree of life.

One has renounced the great life when one renounces war.