If a man wishes to become a hero, then the serpent must first become a dragon: otherwise he lacks his proper enemy.

Not doubt, certainty is what drives one insane.

However unchristian it may seem, I do not even bear any ill feeling towards myself.

All that philosophers have handled for millennia has been conceptual mummies; nothing actual has ever escaped from their hands alive.

All great men are play actors of their own ideal.

A man of genius is unbearable, unless he possesses at least two things besides: gratitude and purity.

Man is something that is to be surpassed.