The law of worldwide value

Marx is not a philosopher, a historian, an economist, a political scientist, or a sociologist. He is not even a scholar of the first rank in any of those disciplines. Nor even a talented professor who prepared a good multidisciplinary dish cooked with all these ingredients. Marx's place is quite outside all that. Marx is the beginning of the radical critique of modern times, starting with the critique of the real world.
This radical critique of capitalism demands and allows discovery of the basis of market alienation and, inseparable from it, the exploitation of labor. The foundational status of the concept of value derives from this radical critique. It alone allows a grasp of the objective laws that govern the reproduction of the system, underlying those surface movements perceptible through direct observation of reality.
Marx links to this critique of the real world the critique of discourses about that reality : those of philosophy, economics, sociology, history, and political science. This radical critique uncovers their true nature which, in the last analysis, is always an apologetic one, legitimizing the practices of capital's dominating power.