Women are treated as unjustly in poetry as in life. The feminine ones are not idealistic, and the idealistic not feminine.

Every relationship of man to the infinite is religion, namely of a man in the full abundance of his humanity. Whenever a mathematician calculates infinity, that, to be sure, is not religion. Infinity conceived in this abundance is the Godhead.

The need to raise itself above humanity is humanity's main characteristic.

Philosophy still moves too much straight ahead, and is not yet cyclical enough.

Wit as an instrument of revenge is as infamous as art is as a means of sensual titillation.

There is no self-knowledge except historical self-knowledge. No one knows what he is if he doesn't know what his contemporaries are.

A good preface must be the root and the square of the book at the same time.