If there be a human being who is freer than I, then I shall necessarily become his slave. If I am freer than any other, then he will become my slave. Therefore equality is an absolutely necessary condition of freedom.

Real humanity presents a mixture of all that is most sublime and beautiful with all that is vilest and most monstrous in the world.

Human nature is so constituted that the propensity for evil is always intensified by external circumstances, and the morality of the individual depends much more on the conditions of his existence and the environment in which he lives than on his own will.

All religions, with their gods, their demigods, and their prophets, their messiahs and their saints, were created by the credulous fancy of men who had not attained the full development and full possession of their faculties.

Collective property and individual property, these two banners will be the standards under which, from now on, the great battles of the future will be fought.

Theology is the science of the divine lie.

Idealism is the despot of thought, just as politics is the despot of will.