You who hate the Jews so, why did you adopt their religion?

There is no more dangerous error than that of mistaking the consequence for the cause.

Every man is a creative cause of what happens, a primum mobile with an original movement.

This mother needs happy, reputable children, and that one needs unhappy ones: otherwise she cannot show her kindness as a mother.

Man must become better and more evil.

In the stream.- Mighty waters draw much stone and rubble along with them; mighty spirits many stupid and bewildered heads.

People who comprehend a thing to its very depths rarely stay faithful to it forever. For they have brought its depths into the light of day: and in the depths there is always much that is unpleasant to see.