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.

Free education for all children in public schools... Combination of education with industrial production

Workers of the world unite; you have nothing to lose but your chains.

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

The production of too many useful things results in too many useless people.

2 is a proletariat prime, but 4, 6 and 8 are also composite proletariats. Composites of the world unite; you have nothing to lose but your chains!

The fact that labour is external to the worker, i.e., it does not belong to his intrinsic nature; that in his work, therefore he does not affirm himself but denies himself, does not feel content but unhappy, does not develop freely his physical and mental energy but mortifies his body and his mind. The worker therefore only feels himself outside his work, and in his work feels outside himself.