"The demand for the liberation of the oppressed nation is nothing but the consistent expression of the struggle against oppression in general."

"The monogamous family does not by any means make its appearance everywhere and always in the same form."

"In a communist society, the only way in which the family can remain in existence is by ceasing to be the economic unit of society."

"The state is nothing but a machine for the oppression of one class by another, and indeed in the democratic republic no less than in the monarchy."

"All that is solid melts into air, all that is holy is profaned, and man is at last compelled to face with sober senses his real conditions of life, and his relations with his kind."