M. Proudhon has the misfortune of being particularly misunderstood in Europe. In France, he 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. Being both a German and an economist at the same time, we desire to protest against this double error.
Communist Manifesto, Das Kapital