Not doubt, certainty is what drives one insane.

There are no beautiful surfaces without a terrible depth.

This is the fundamental idea of culture, insofar as it sets but one task for each of us: to further the production of the philosopher, of the artist, and of the saint within us and outside us, and thereby to work at the consummation of nature.

Strideth over all mountains, and laugheth at all tragedies

We attack not only to hurt someone, to defeat him, but perhaps also simply to become conscious of our own strength.

There is no more dreary or more repulsive creature than the man who has evaded his genius.

The anarchist and the Christian have a common origin.