Karl Marx

"Consciousness follows existence; being determines consciousness."

"The family under capitalism is built on economic inequality and dependence."

"Revolution is the locomotive of history, driven by class contradictions."

"Private property is theft of the common inheritance of humanity."

"The division of labour enslaves people to particular skills and narrows their potential."

"As society develops, the contradictions of capitalism become more acute."

"The world will be free when the last king is strangled with the entrails of the last priest."

"Science and reason must replace superstition and ignorance."

"The subjective consciousness of the worker must catch up with objective conditions."

"Capitalism creates a world after its own image, constantly revolutionizing production."

"True freedom comes only through the abolition of class distinctions."

"The goal is not merely to interpret reality but to transform it fundamentally."

"Labour is the source of all value and the foundation of all wealth."

"In a just society, each contributes according to ability and receives according to need."

"The philosophers have only interpreted the world in various ways; the point is to change it."

"Men make their own history, but they do not make it just as they please."

"The working man has no country."

"Capital is dead labor that, vampire-like, only lives by sucking living labor."

"Religion is the opium of the people."

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

"Quantity is transformed into quality."

"The more the worker produces, the less he has to consume."

"Competition isolates individuals from one another in spite of the fact that it brings them together."

"The mode of production of material life conditions the social, political and intellectual life process in general."

"Society as a whole is more and more splitting up into two great hostile camps."

"Nothing can have value without being an object of utility."

"Economically, the proposition is quite correct that the worker is not paid for his labor but for his labor-power."

"History repeats itself, first as tragedy, second as farce."

"The bourgeoisie produce their own grave-diggers."

"All that is solid melts into air."