"If the proletariat during its contest with the bourgeoisie is compelled, by the force of circumstances, to organize itself as a class; if, by means of a revolution, it makes itself the ruling class, and, as such, sweeps away by force the old conditions of production, then it will, along with these conditions, have swept away the conditions for the existence of class antagonisms and of classes generally, and will thereby have abolished its own supremacy as a class. 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."

It is from these words that, during the next century and a half, revolutionary action swept first across Europe and then across the world.

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