Gustav Groß’s study presents Marx as a figure whose historical force cannot be explained either by biography alone or by doctrine alone. Written from a standpoint openly distant from Marx, it aims not at a final life but at correction of misunderstanding:
"zur Klärung der Ansichten über Marx beizutragen."
English translation: "to contribute to clarifying views on Marx."
The book’s thesis is that Marx became decisive because modern capitalism created a uniform proletarian question, while Marx supplied both organization and theory. Groß opens by describing the proletarian movement as a product of capitalist production, world trade, and communications; under these conditions leaders can exert extraordinary power. Marx, he argues,
"hat Marx alle Vorgänger und Zeitgenossen in seiner Partei weitaus übertroffen."
English translation: "Marx far surpassed all predecessors and contemporaries within his party."
The first part traces Marx’s passage from Trier, Bonn, and Berlin through Hegelian philosophy, the Rheinische Zeitung, Paris, and Brussels. Groß emphasizes the early radicalism: critique of monarchy, religion, nationality, and bourgeois society already converges toward the later claim that political economy is the anatomy of civil society. Brussels becomes the decisive turning point: Marx breaks with post-Hegelian ideology, joins Engels, studies political economy, and converts communism from utopian aspiration into a claim of historical-scientific necessity.
The second part treats Marx as publicist and party leader, beginning with the Communist Manifesto. Groß calls it
"in seiner ganzen Darstellungsart und Stylisierung ein Meisterstück agitatorischer Geschicklichkeit"
English translation: "in its entire mode of presentation and style, a masterpiece of agitational skill"
but also sees in it the moment when Marx’s two identities diverge. The Manifesto’s historical drama—bourgeoisie producing its own gravedigger, proletarian revolution centralizing production, communism as international class interest—marks Marx’s rise as leader, yet for Groß it also introduces a disturbing split:
"Es ist wenigstens mir unmöglich, von diesem Zeitpunkt an den Parteiführer Marx mit dem Gelehrten Marx zu identifizieren."
English translation: "It is at least impossible for me, from this point on, to identify the party leader Marx with the scholar Marx."
This distinction structures the whole study. Groß follows Marx through 1848, exile, the Neue Rheinische Zeitung, journalism, the dispute with Vogt, and finally the International Working Men’s Association. He contrasts the Communist Manifesto with the more measured Inaugural Address of 1864: Marx has not changed his ends, but has learned tactical restraint. The International is described less as conspiracy than as propaganda and coordination, formally loose but intellectually dominated by Marx. Groß criticizes Marx’s defense of the Paris Commune, yet also insists that Marxism must not be confused with Bakuninist anarchism. The political point of the book lies here: Marx’s ideas have organized European socialism, and only “eine weit ausgreifende Socialreform” can answer the danger.
The third part is the most substantial intellectually. Groß reconstructs Marx’s economics through Misère de la philosophie, Zur Kritik der politischen Ökonomie, and especially Das Capital. He treats Marx not as a system-builder in the ordinary textbook sense, but as a critic of bourgeois economy whose core sequence is value, money, capital, surplus value:
"Werththeorie, Geldtheorie, Kapitaltheorie und Mehrwerththeorie."
English translation: "theory of value, theory of money, theory of capital, and theory of surplus value."
Groß’s exposition is careful. Marx begins from the commodity, separates use-value from exchange-value, reduces value to socially necessary labor-time, derives money as the general equivalent, and defines capital not as a thing but as a circulation process, G–W–G′. The key conceptual move is the discovery of labor-power as the commodity whose use creates more value than it costs. From this follow absolute and relative surplus value, the struggle over the working day, cooperation, manufacture, machinery, accumulation, the industrial reserve army, and original accumulation as the violent separation of workers from means of production.
Groß admires Marx’s method—abstraction joined to historical observation—and especially his analyses of machinery and division of labor. Yet his criticism is fundamental: Marx’s labor theory of value is too objective, neglecting subjective valuation, demand, utility, and the independent role of nature and capital. The transition from value to price remains weak, and original accumulation, though historically powerful, evades the possibility that capital may also arise from earned property. Still, Groß rejects the dismissive treatment Marx had received from many economists. However hostile he is to Marx’s politics, he closes by acknowledging the lasting scientific importance of parts of Capital:
"Diese Partien des Marxschen Werkes gehören unstreitig zu dem Bedeutendsten, was in dieser Richtung je geschrieben worden ist."
English translation: "These portions of Marx's work belong indisputably to the most significant that has ever been written in this direction."
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