In proportion as capital accumulates, the lot of the laborer, be his payment high or low, must grow worse.

Between capitalist and communist society there lies the period of the revolutionary transformation of the one into the other. Corresponding to this is also a political transition period in which the state can be nothing but the revolutionary dictatorship of the proletariat.

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

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

All science would be superfluous if the outward appearance and the essence of things directly coincided.

Those dogs of democrats and liberal riff-raff will see that we're the only chaps who haven't been stultified by the ghastly period of peace.

Go on, get out - last words are for fools who haven't said enough. To his housekeeper, who urged him to tell her his last words so she could write them down for posterity.