The drive toward knowledge has a moral origin.

There will be but few people who, when at a loss for topics of conversation, will not reveal the more secret affairs of their friends.

For the woman, the man is a means: the end is always the child.

Go through the towns and ask yourselves whether these people should reproduce! Let them go to their whores!

Once and for all, there are many things I choose not to know.--Wisdom sets limits even to knowledge.

Enjoy life. This is not a dress rehearsal.

How much rationality and higher protection there is in such self-deception, and how much falseness I still require in order to allow myself again and again the luxury of my sincerity.