In the production of commodities only sellers and buyers, independent of one another, meet. Their mutual relations cease with the termination of their mutual contract. If the transaction is repeated, it is done by a new contract, which has nothing to do with the former one, and only an accident brings the same seller once more together with the same buyer.
Hence, if the production of commodities, or a transaction belonging to it, is to be judged by its own economic laws, we must consider each act of exchange by itself, outside of all connection with the act of exchange preceding it and following it, And since purchases and sales are transacted between individuals, it will not do to seek therein relations between entire classes of society.
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 revolutionised 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
