“It is the ultimate aim of this work to lay bare the economic law of motion of modern society", i.e., capitalist, bourgeois society, says Marx in the preface to Capital. An investigation into the relations of production in a given, historically defined society, in their inception, development, and decline—such is the content of Marx’s economic doctrine. In capitalist society the production of commodities is predominant, and Marx’s analysis therefore begins with an analysis of commodity.