The only antidote to mental suffering is physical pain.
The class struggle necessarily leads to the dictatorship of the proletariat.
Wages are determined by the bitter struggle between capitalist and worker.
All science would be superfluous if the outward appearance and the essence of things directly coincided.
In place of the old bourgeois society, with its classes and class antagonisms, we shall have an association in which the free development of each is the condition for the free development of all.
All social rules and all relations between individuals are eroded by a cash economy, avarice drags Pluto himself out of the bowels of the earth.