"An ounce of action is worth a pound of theory."

"The modern individual is a product of social relations, not an isolated atom."

"The ruling ideas of each age have ever been the ideas of its ruling class."

"The abolition of existing property relations is not at all a distinctive feature of communism."

"Only the proletariat, by abolishing private property itself, will be able to emancipate itself and thereby all other classes of society."