Karl Marx on Pierre-Joseph Proudhon

“Proudhon was the first to draw attention to the fact that the sum of the wages of the individual workers, even if each individual labour be paid for completely, does not pay for the collective power objectified in its product, that therefore the worker is not paid as a part of the collective labour power.”

“In France, Proudhon has the right to be a bad economist because he is reputed to be a good German philosopher. In Germany, he has the right to be a bad philosopher because he is reputed to be one of the ablest of French economists. But being both a German and an economist, I wish to protest against this double error.”