The question whether truth is necessary, must not merely be affirmed beforehand, but must be affirmed to such an extent that the principle, belief, or conviction finds expression, that there is nothing more necessary than truth, and in comparison with it everything else has only a secondary value.

How much truth does a spirit endure, how much truth does it dare? That became for me the real measure of value.

A man should look for what is, and not for what he thinks should be.

It is good to express a thing twice right at the outset and so to give it a right foot and also a left one. Truth can surely stand on one leg, but with two it will be able to walk and get around.

There are various eyes. Even the Sphinx has eyes: and as a result there are various truths, and as a result there is no truth.

In the consciousness of the truth he has perceived, man now sees everywhere only the awfulness or the absurdity of existence and loathing seizes him.