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.

That in order to achieve the triumph of liberty, justice and peace in the international relations of Europe, and to render civil war impossible among the various peoples which make up the European family, only a single course lies open: to constitute the United States of Europe

We are materialists and atheists, and we glory in the fact.

The privileged man, whether he be privileged politically or economically, is a man depraved in intellect and heart.

Theology created the fiction of Satan which represents the revolt if an infinite being against the existence of an absolute infinity, against God.

Man is only truly free only among equally free men.

Priests, kings, statesmen, soldiers, bankers and public functionaries of all sorts; policemen, jailers and hangmen; capitalists, usurers, businessmen and property-owners; lawyers, economists and politicians - all of them, down to the meanest grocer, repeat in chorus the words of Voltaire, that if there were no God it would be necessary to invent Him.