"Philosophy is to the real world as masturbation is to sex."
"The tradition of all the dead generations weighs like a nightmare on the brain of the living."
"Religion is the opiate of the masses."
"The philosophers have already perceived the world in various ways; the point is to change it."
"The philosophers have only interpreted the world, in various ways; the point is to change it."
"One of the most difficult tasks confronting philosophers is to descend from the world of thought to the actual world. Language is the immediate actuality of thought. Just as philosophers have given thought an independent existence, so they were bound to make language into an independent realm."
"The oppressed are allowed once every few years to decide which particular representatives of the oppressing class are to represent and repress them."
"It is not the consciousness of men that determines their beeing, but on the contrary, it is their social being that determines their consciousness."
"From each according to their ability, to each according to their need."
"Workers of the world unite, you have nothing to lose but your chains."
"Reason has always existed, but not always in a reasonable form."