Karl Marx's The Eighteenth Brumaire of Louis Bonaparte is a seminal work of political analysis that examines the rise of Louis-Napoleon Bonaparte (Napoleon III) and his 1851 coup d'état in France. Marx explores the dynamics of class struggle and the interplay of historical forces that led to this moment.

The work's title references Napoleon Bonaparte's coup of 1799, drawing parallels between the two events. Marx argues that history often repeats itself, "the first time as tragedy, the second as farce." He critiques Louis-Napoleon's use of populism and manipulation of state power to consolidate his rule, highlighting how he exploited divisions within the bourgeoisie, the weakness of the proletariat, and the disarray among other classes.

Marx provides a materialist analysis of the political and economic conditions of the time, emphasizing the importance of class structures and interests in shaping historical outcomes. He critiques the bourgeois republic for failing to address the needs of the working class and paving the way for Bonaparte's authoritarian regime. The work underscores the cyclical nature of class conflict and the limitations of revolutionary potential in the absence of proletarian class consciousness and organization.

In Concerning Questions of Leninism, Stalin provides a concise overview of dialectical and historical materialism, grounded in Marxist philosophy and its application to the Leninist framework of revolutionary praxis. Dialectical materialism, according to Stalin, views the world as a dynamic, interconnected whole, characterized by constant motion, contradiction, and development. It emphasizes the material basis of reality, asserting that ideas and consciousness arise from material conditions rather than existing independently.

Historical materialism, an extension of this philosophy, applies these principles to human society. It posits that the economic base—comprised of the forces and relations of production—shapes the societal superstructure, including politics, culture, and ideology. Human history, therefore, is driven by class struggle, rooted in contradictions between the forces of production and the existing relations of production.

Stalin ties these concepts to Leninism by emphasizing their practical implications: the necessity of a revolutionary vanguard party to resolve contradictions, advance proletarian interests, and transition from capitalism to socialism. This approach, rooted in materialist analysis, underpins Stalin's interpretation of Leninist strategy as a scientific method for achieving socialist revolution.

Lenin's Two Tactics of Social-Democracy in the Democratic Revolution (1905) outlines the contrasting strategies for socialist engagement in the bourgeois-democratic revolution. He critiques the Mensheviks' reliance on the liberal bourgeoisie to lead the revolution, arguing this would fail to dismantle feudal remnants and would compromise proletarian interests. Instead, Lenin advocates for the Bolsheviks' approach: a worker-peasant alliance to form a "revolutionary-democratic dictatorship of the proletariat and peasantry." This coalition, he argues, can most effectively overthrow autocracy, achieve land reform, and lay the groundwork for socialist transformation, independent of bourgeois influence.

Karl Marx's Critique of the Gotha Program (1875) is a sharp analysis of the draft program proposed for the unification of two German socialist parties: the Eisenachers (aligned with Marx's views) and the Lassalleans (followers of Ferdinand Lassalle). Marx critiques the program's ideological concessions to Lassallean ideas and its theoretical inconsistencies, particularly regarding the state, labor, and socialism.

Key points of Marx's critique include:

Overall, Marx's critique underscores the need for clear revolutionary theory and praxis, rooted in a materialist understanding of class struggle, rather than compromising with reformist or opportunistic ideas. It serves as a foundational text for understanding Marxist principles of the transition to communism and the critique of state-centered socialism.

The Elemental Principles of Philosophy by Georges Politzer is a foundational text in Marxist philosophy that seeks to make dialectical materialism accessible to a broader audience. Politzer outlines the key principles of Marxist theory, emphasizing the materialist conception of history and the dialectical method as tools for understanding and transforming society.

The book critiques idealist philosophies, focusing on the role of material conditions in shaping human thought and social structures. It serves as an introductory guide to core Marxist ideas such as the class struggle, the relationship between the base and superstructure, and the necessity of revolutionary action. Politzer's work is practical and didactic, aimed at equipping workers and activists with the intellectual tools to engage critically with their world and work towards social change.

Karl Liebknecht's Militarism and Anti-Militarism (1907) critically examines the role of militarism in capitalist societies and its relationship to class oppression. He identifies militarism as a tool of the ruling class to maintain power, both externally through imperialist aggression and internally by suppressing dissent and worker movements. Liebknecht argues that militarism is deeply entwined with capitalism, as it serves the interests of bourgeois elites by ensuring access to resources, markets, and control over labor.

Liebknecht also addresses the psychological and cultural aspects of militarism, highlighting how it fosters obedience, nationalism, and a dehumanizing glorification of war. He warns against the social and political costs of militarization, including economic exploitation, loss of civil liberties, and the erosion of international solidarity among workers.

In contrast, Liebknecht advocates for anti-militarism as a key component of the socialist struggle. He calls on workers to resist militaristic policies, refuse to participate in wars of conquest, and organize against conscription and military propaganda. Anti-militarism, he argues, is essential for dismantling capitalism and building a society based on peace and equality.

Through his analysis, Liebknecht connects militarism to the broader structures of capitalist domination, urging the working class to unite against both militarism and the system it serves.

Vladimir Lenin's "What Is to Be Done?" is a foundational Marxist text written in 1902 that outlines his vision for revolutionary organization and strategy. In the pamphlet, Lenin argues that a disciplined, centralized "vanguard party" composed of professional revolutionaries is essential to lead the working class toward overthrowing capitalism. He emphasizes the need for political education and consciousness among workers, critiquing other socialist movements for their perceived lack of direction and theoretical clarity. Lenin also discusses the importance of seizing opportunities for revolution and the necessity of strategic planning to achieve lasting social and political change. Overall, the work lays the groundwork for Leninist theory and the organizational principles that would later shape the Bolshevik movement and the Soviet Union.

Antonio Gramsci's The Modern Prince is a pivotal section of his Prison Notebooks that draws an analogy between Niccolò Machiavelli's The Prince and the modern revolutionary party. Gramsci reinterprets Machiavelli’s call for a strong, strategic leader to argue for the necessity of a collective, organized political force — the party — to serve as the "Modern Prince." This force must lead the proletariat in constructing hegemony to challenge and replace the dominant ruling class.

Gramsci emphasizes that political leadership requires more than coercion; it demands the cultivation of cultural and ideological consent among the masses. The revolutionary party must engage in a war of position—building alliances, gaining popular support, and influencing the cultural superstructure—before launching a war of maneuver, or direct confrontation, with the existing state apparatus. Gramsci also underscores the importance of intellectuals within the party to connect theoretical understanding with practical action, ensuring the development of a unified, revolutionary consciousness.

The Modern Prince thus serves as both a critique of traditional leadership models and a blueprint for building a disciplined, revolutionary movement capable of transforming society.

Imperialism: The Highest Stage of Capitalism by Vladimir Lenin is a critical analysis of the development of capitalism into its imperialist phase. Written in 1916, Lenin argues that imperialism is the inevitable outcome of advanced capitalism, characterized by the concentration of production and capital into monopolies, the merging of banking and industrial capital into finance capital, and the export of capital to less developed regions.

Lenin outlines five key features of imperialism:

Lenin concludes that imperialism exacerbates global inequalities, intensifies exploitation, and inevitably leads to war as capitalist nations vie for dominance. He argues that the contradictions of imperialism lay the groundwork for socialist revolutions, particularly in oppressed nations. The work remains a foundational text for understanding the relationship between capitalism, imperialism, and global politics.

Friedrich Engels' essay "The Housing Question" explores the dire housing conditions that emerged in 19th-century industrial cities due to rapid urbanization and capitalist economic structures. Engels argues that the capitalist system prioritizes profit over the well-being of workers, leading to overcrowded, unsanitary, and poorly constructed living spaces. He highlights how inadequate housing not only exacerbates social inequalities but also contributes to health problems, crime, and reduced productivity among the working class. Engels contends that meaningful improvement in housing conditions requires systemic change, advocating for social ownership and regulation to ensure that all citizens have access to safe, healthy, and affordable living environments. His analysis underscores the connection between economic systems and the quality of life, emphasizing the need for societal transformation to address fundamental housing issues.