Knowledge for the sake of knowledge! Truth for truth's sake! This is inhuman.

Your neighbor's vision is as true for him as your own vision is true for you.

If a philosopher is not a man, he is anything but a philosopher; he is above all a pedant, and a pedant is a caricature of a man.

The only way to give finality to the world is to give it consciousness.

My work...is to shatter the faith of men here, there, and everywhere, faith in affirmation, faith in negation, and faith in abstention from faith, and this for the sake of faith in faith itself.

These terrible sociologists, who are the astrologers and alchemists of our twentieth century.

The devil is an angel too.