To be ashamed of one's immorality: that is a step on the staircase at whose end one is also ashamed of one's morality.

You say it is the good cause that hallows even war? I say unto you: it is the good war that hallows any cause.

Silence is worse; all truths that are kept silent become poisonous.

It is not conflict of opinions that has made history so violent but conflict of belief in opinions, that is to say conflict of convictions.

Necessity is not an established fact, but an interpretation.

If there is to be art, if there is to be any aesthetic doing and seeing, one physiological condition is indispensable: frenzy.

The one seeks a midwife to deliver his thoughts, the other, someone to assist: thus a good conversation comes into being.