sold himself to capital. His economic bondage¹⁸ is both brought about and concealed by the periodic sale of himself, by his change of masters, and by the oscillations in the market-price of labour-power.¹⁹

Capitalist production, therefore, under its aspect of a continuous connected process, of a process of reproduction, produces not only commodities, not only surplus-value, but it also produces and reproduces the capitalist relation; on the one side the capitalist, on the other the wage-labourer.²⁰