| “ | No matter how long may be the series of periodical reproductions and former accumulations through which the capital now invested may have passed, it always retains its primal virginity. So long as the laws of exchange are observed in every act of exchange, individually considered, the mode of appropriation may be completely revolutionized without in the least affecting the property right bestowed by the production of commodities. The same right remains in force, whether it be at a time when the product belonged to the producer, and when this producer, exchanging equivalent for equivalent, could enrich himself only by his own labour, or whether it be under capitalism, where the social wealth becomes in an ever increasing degree the property of those, who are in a position to appropriate to themselves again and again the unpaid labour of others.
This result becomes inevitable, as soon as labour-power is sold as a commodity by the "free" labourer himself. It is from that time on that the production of commodities becomes universal and a typical form of production. Henceforth every product is intended at the outset for sale, and all produced wealth passes through the circulation. The production of commodities does not impose itself upon the whole society, until wage-labour becomes its basis. And only then does it unfold all its powers. To say that the intervention of wage labour adulterates the production of commodities means to say that the production of commodities must not develop, if it wishes to remain unadulterated. To the same extent that it continues to develop by its own inherent laws into a capitalist production, the property laws of the production of commodities are converted into the laws of capitalistic appropriation. |
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| — Karl Marx (1818 – 1883) Das Kapital , 1867 |
