Part I. The early Marx. Marx on the history of his opinions (Preface to A contribution to the critique of political economy)
- Discovering Hegel (Marx to his father)
- To make the world philosophical (from Marx's doctoral dissertation)
- For a ruthless criticism of everything existing (Marx to Arnold Ruge)
- Contribution to the critique of Hegel's Philosophy of right
- Contribution to the critique of Hegel's Philosophy of right : Introduction
- Economic and philosophic manuscripts of 1844
- Critical marginal notes on the article "The king of Prussia and social reform"
- Alienation and social classes (from The holy family)
- Society and economy in history (Marx to P.V. Annenkov)
- The German ideology: Part I
Part II. The critique of capitalism. Wage labour and capital
- The coming unheaval (from The poverty of philosophy)
- Class struggle and mode of production (Marx to Joseph Weydemeyer)
- Crisis theory (from Theories of surplus value)
Part III. Revolutionary program and strategy. Manifesto of the Communist Party
- Address of the Central Committee to the Communist League
- Inaugural address of the Working Men's International Association
- Economics and politics in the labor movement (Marx to F. Bolte)
- Against personality cults (Marx to W. Blos)
- The possibility of non-violent revolution (the Amsterdam speech)
- Critique of the Gotha program
- After the revolution: Marx debates Bakunin
- Circular letter to Bebel, Liebknecht, Bracke, and others
- The tactics of social democracy (Engels' introduction to Marx's The class struggles in France, 1848-1850)
Part IV. Society and politics in the nineteenth century. Speech at the anniversary of the People's paper
- Working-class Manchester (from The condition of the working class in England in 1844)
- The class struggle in France, 1848-1850
- The eighteenth Brumaire of Louis Bonaparte
- The civil war in France
- On imperialism in India
- On social revolution in Russia
- Europocentric world revolution (Marx to Engels, Engels to Karl Kautsky)
Part V. The later Engels: elaboration and popularization. Speech at the graveside of Karl Marx
- Socialism: Utopian and scientific
- On the division of labour production (from Anti-Dühring)
- On morality (from Anti-Dühring)
- Versus the anarchists (Engels to Theodore Cuno)
- The origin of the family, private property, and the state
- Letters of historical materialism.