We must spread our principles, not with words but with deeds, for this is the most popular, the most potent, and the most irresistible form of propaganda.

The organization of society is always and everywhere the unique cause of the crimes committed by individuals.

The urge to destroy is a creative urge.

The individual who dares commit a crime is guilty in a two-fold sense; first, he is guilty against human conscience, and, above all, he is guilty against the State in arrogating to himself one of its most precious privileges.

By striving to do the impossible, man has always achieved what is possible.

I feel myself always the patriot of all oppressed fatherlands. Nationality is a historic, local fact which, like all real and harmless facts, has the right to claim general acceptance. Every people, like every person, is involuntarily that which it is and therefore has a right to be itself. Nationality is not a principle; it is a legitimate fact, just as individuality is. Every nationality, great or small, has the incontestable right to be itself, to live according to its own nature. This right is simply the corollary of the general principal of freedom.

Where the state begins, individual liberty ceases, and vice versa.