Humanity is in the highest degree irrational, so that there is no prospect of influencing it by reasonable arguments. Against prejudice one can do nothing.

One must not be mean with affections; what is spent of the funds is renewed in the spending itself. Left untouched for too long, they diminish imperceptibly or the lock gets rusty; they are there all right but one cannot make use of them.

It sounds not only disagreeable but also paradoxical, yet it must nevertheless be said that anyone who is to be really free and happy in love must have surmounted his respect for women and have come to terms with the idea of incest with his mother or sister.

Love is a state of temporary psychosis.

Adolescent stage in the development of the human race from which humanity should free itself.

When a man is freed of religion, he has a better chance to live a normal and wholesome life.

Yes, America is gigantic, but a gigantic mistake.