When Marx scholar Roman Rosdolsky first discovered the almost unknown text by Marx, Grundrisse - his preparatory work for his masterpiece, Das Kapital - in the 1950s at the New York Public Library, he recognized it as a "work of fundamental importance," but stated that "its unusual form" and "its abstruse expression made it far from suitable for a broad readership." David Harvey's Companion to Marx's Grundrisse builds on his widely recognized guides to the first two volumes of Capital in a way that will reach as wide an audience as possible. Marx's statement about this text - where he elaborated on the possible transformations of capitalism - is to reveal "the precise development of the concept of capital as a fundamental concept of modern economics, just as capital is the foundation of bourgeois society." Respecting Marx's desire to "unveil all the contradictions of bourgeois production, as well as the limit where this progresses beyond itself," David Harvey also clearly illustrates the significance of Marx's text for understanding the troubled state of contemporary capitalism.