In business the man who engages in the most adventures is surest to come out unhurt.

The oppressed are allowed once every few years to decide which particular representatives of the oppressing class are to represent and repress them.

The proletarians have nothing to lose but their chains. They have a world to win.

A spectre is haunting Europe—the spectre of Communism.

The history of all hitherto existing society is the history of class struggles.

The class struggle necessarily leads to the dictatorship of the proletariat.

All I know is that I am not a Marxist.

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

Hegel says somewhere that all great events and personalities in world history reappear in one fashion or another. He forgot to add: the first time as tragedy, the second as farce.

Religion is … the opium of the people.