Labour is ... not the only source of material wealth, i.e, of the use-values it produces. As William Petty says, Labour is the father of material wealth, the earth is its mother.

The more a ruling class is able to assimilate the most prominent men of a ruled class, the more solid and dangerous its rule.

The English have all the material requisites for the revolution. What they lack is the spirit of generalization and revolutionary ardour.

The last capitalist we hang shall be the one who sold us the rope.

Religion is the balm of the people.

Scientific truth is always paradox, if judged by everyday experience, which catches only the delusive appearance of things.

In the various stages of development which the struggle of working class against the bourgeoisie has to pass through, they always and everywhere represent the interests of the movement as a whole.