ABSTRACT
Karl Marx worked out his system of theory in the main during the third quarter of the nineteenth century. The authentic spokesmen of the current international socialism are avowed Marxists. Exceptions to that rule are very few. On the whole, the substantial truth of the Marxist doctrines is not seriously questioned within the lines of the socialists, though there may be some appreciable divergence as to what the true Marxist position is on one point and another. Apart from all merely tactical expedients, the experience of the past thirty years has led the German Marxists to see the facts of the labor situation in a new light, and has induced them to attach an altered meaning to the accepted formulations of doctrine. In any evolutionary system of economics the central question touching the efficiency and fitness of any given system of production is necessarily the question as to the excess of serviceability in the product over the cost of production.
