and then smuggling into direct barter the character of buyer and seller borrowed by him from the process of circulation. To put it in his own confused language, during certain periods when all commodities are unsaleable there are really more buyers than sellers of one commodity, money, and more sellers than buyers of all other money, commodities; such was, e. g., the case at certain moments during the commercial crisis of 1857-58 in London and Hamburg. The metaphysical balance of purchases and sales amounts to this, that every purchase is a sale and every sale is a purchase, which is a poor consolation to the guardian of the commodity who can not bring about its sale and therefore can not buy.71
The separation of sale and purchase makes possible a large number of fictitious transactions side by side with genuine trade before the final exchange between the producer and the consumer of commodities takes place. It enables a host of parasites to penetrate the process of production and exploit the separation. But this, again, means that with money as the universal form of labor under the capitalist system, there is the possibility of the development of its contradictions.