The liberty of the individual is a necessary postulate of human progress.

God, if there is a God, take my soul, if I have a soul.

Man is not on this earth merely to be happy, or even to be simply honest. He is there to realize great things for humanity, to attain nobility and to surmount the vulgarity of almost everybody.

The simplest schoolboy is now familiar with truths for which Archimedes would have sacrificed his life.

Religion is not a popular error; it is a great instinctive truth, sensed by the people, expressed by the people.

As a rule, all heroism is due to a lack of reflection, and thus it is necessary to maintain a mass of imbeciles. If they once understand themselves the ruling men will be lost.