He who desires to worship God must harbor no childish illusions about the matter but bravely renounce his liberty and humanity.

To my utter despair I have discovered, and discover every day anew, that there is in the masses no revolutionary idea or hope or passion.

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 must overthrow the material and moral conditions of our present-day life. . . . We must first purify our atmosphere and completely transform the milieu in which we live; for it corrupts our instinct and our will, and constricts our heart and our intelligence

Theology is the science of the divine lie.

If God existed, only in one way could he serve the cause of human liberty-by ceasing to exist.

Does man's freedom consist in revolting against all laws? We say no, in so far as laws are natural, economic, and social laws, not authoritatively imposed but inherent in things, in relations, in situations, the natural development of which is expressed by those laws. We say YES if they are political and juridical laws, imposed upon men by men.