Karl Marx — "The history of all hitherto existing society is the history of class struggles."

"The executive of the modern state is nothing but a committee for managing the common affairs of the whole bourgeoisie."

"The tradition of all dead generations weighs like a nightmare on the brains of the living."

"Under no circumstances does Marx sanction the use of violence to achieve his aims. He was a man of peace."

"Capital is dead labour, which, vampire-like, only lives by sucking living labour, and lives the more, the more labour it sucks."

"M. Proudhon has the misfortune of being particularly misunderstood in Europe. In France, he has the right to be a bad economist, because he is reputed to be a good German philosopher. In Germany, he h…"