Over time, to the extent that production becomes production for exchange (as, in other words the capitalist mode of production develops, and extends its reach), the exchange relation increasingly establishes itself, as Marx put it earlier in the text, “as a power external to and independent of the producers.” Over the course of this development, the exchange relation in general assumes a social position of ever-greater weight and autonomy, sucking all aspects of human life within its mode of existence.

More (pdf, 269 KB): The Chapter on Money Part 4: The Objectification of the Relations between People as Relations of Exchange (pp. 156-165)