Man is very well defended against himself... The actual fortress is inaccessible, even invisible to him, unless his friends and enemies play the traitor and conduct him in by a secret path.

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

One hears but one does not seek; one takes -- one does not ask who gives; a thought flashes up like lightning, it comes of necessity and unfalteringly formed.

Full is the earth of the superfluous; marred is life by the many-too-many. May they be decoyed out of this life by the "life eternal"!

Conversation with a friend will only bear good fruit of knowledge when both think only of the matter under consideration and forget that they are friends.

We do not hate as long as we still attach a lesser value, but only when we attach an equal or a greater value.

The so called unconscious inferences can be traced back to the all-preserving memory, which presents us with parallel experiences and hence already knows the consequences of an action. It is not anticipation of the effects; rather, it is the feeling: identical causes, identical effects . . .