"A change in Quantity also entails a change in Quality"

"Freedom does not consist in any dreamt-of independence from natural laws, but in the knowledge of these laws, and in the possibility this gives of systematically making them work towards definite ends."

"What is good for the ruling class, is alleged to be good for the whole of society with which the ruling class identifies itself."

"What is Communism? Communism is the doctrine of the conditions of the liberation of the proletariat. What is the proletariat? The proletariat is that class in society which lives entirely from the sale of its labor and does not draw profit from any kind of capital; whose weal and woe, whose life and death, whose sole existence depends on the demand for labor...."

"Terror consists mostly of useless cruelties perpetrated by frightened people in order to reassure themselves."

"The executive of the modern State is but a committee for managing the common affairs of the whole bourgeoisie."

"In this sense, the theory of the Communists may be summed up in the single sentence: Abolition of private property."

"The history of all hitherto existing societies is the history of class struggles."

"Actually, each mental image of the world system is and remains limited, objectively by the historical situation and subjectively by its author's physical and mental constitution."

"What each individual wills is obstructed by everyone else, and what emerges is something that no one willed."

"Everything must justify its existence before the judgment seat of Reason, or give up existence."

"In a political struggle of class against class, organization of trade unions is the most important weapon."

"Some laws of state aimed at curbing crime are even more criminal."

"Without analysis, no synthesis."

"All history has been a history of class struggles between dominated classes at various stages of social development."

"The state is nothing but an instrument of opression of one class by another - no less so in a democratic republic than in a monarchy."

"Freedom is the recognition of necessity."

"Let the ruling classes tremble at a Communistic revolution. The proletarians have nothing to lose but their chains. They have a world to win."

"We find two great gangs of political speculators, who alternately take possession of the state power and exploit it by the most corrupt ends -- the nation is powerless against these two great cartels of politicians who are ostensibly its servants, but in reality dominate and plunder it."