I. Introduction: Spinoza and the Problem of Historical Materialism
Baruch Spinoza occupies a singular position in the history of philosophy: a thinker simultaneously canonised and neutralised. He is celebrated as a rationalist metaphysician, admired as a pioneer of secular modernity, and invoked as a precursor to democratic thought. Yet these recognitions have often come at the cost of stripping his work of its revolutionary implications. Contemporary scholarship, even when sympathetic, tends to isolate Spinoza from the social antagonisms of the seventeenth century and from the radical traditions that later drew upon his ideas. Spinoza’s ideas were “dangerous in his own time, and remain dangerous today,” precisely because they undermine every ideological justification for hierarchy, privilege, and clerical authority.
2.Spinoza’s Life as a Historical Symptom
Spinoza’s biography is not an incidental backdrop to his philosophy; it is a historical symptom of the contradictions of the Dutch Republic. Born into Amsterdam’s Portuguese‑Jewish community a community of former conversos who had fled the Inquisition Spinoza was excommunicated at twenty‑three for “abominable heresies” and “monstrous deeds.” The severity of the cherem reveals the political anxieties of a mercantile‑rabbinic elite dependent on the Republic’s fragile tolerance. Spinoza’s ideas threatened not only theological orthodoxy but the ideological foundations of a commercial oligarchy.
His modest life as a lens‑grinder, his clandestine publications, and his sympathy for Jan de Witt’s republicanism all point to a thinker whose material circumstances were inseparable from his philosophical commitments. His attempt to denounce de Witt’s murder as “barbaric” an act his landlord prevented for fear of reprisals illustrates the political stakes of his thought. Spinoza’s biography thus becomes a site where intellectual history and class struggle intersect.
Leon Trotsky’s method of “concrete analysis of concrete conditions” is indispensable here. Spinoza’s intellectual defiance cannot be understood apart from the class forces that shaped the Dutch Republic: the rise of a commercial bourgeoisie, the crisis of feudal remnants, and the ideological vacuum created by the decline of scholasticism. Spinoza’s philosophy emerges not as an abstract system but as the rational expression of a world in transition.
3.Monism as the Ontological Ground of Materialism
Spinoza’s rejection of Cartesian dualism is the decisive philosophical rupture that makes modern materialism possible. Descartes’ division of reality into res cogitans and res extensa preserved the theological worldview of the seventeenth century. Spinoza demolished this architecture by asserting that there is only one substance “God or Nature (Deus sive Natura).” Thought and extension are attributes of the same substance; the mental and the physical are two expressions of one reality.
This monism is not a metaphysical curiosity but the ontological foundation of materialism. By dissolving the supernatural realm, Spinoza undermines the ideological authority of church and state. His claim that “the order and connection of ideas is the same as the order and connection of things” anticipates Marx’s insistence that consciousness is a product of material conditions. Spinoza’s monism thus becomes the conceptual precondition for a scientific account of society.
Trotsky’s dialectical materialism deepens this insight. For Trotsky, the unity of mind and world is not merely ontological but historical: consciousness develops through labour, social relations, and class struggle. Spinoza’s monism provides the ontological ground; Marx and Trotsky provide the historical and dialectical method.
4.Consciousness, the Body, and the Anticipation of Marx
Steven Nadler’s argument is that consciousness corresponds to bodily complexity, citing Spinoza’s remark that “in proportion as a body is more capable… so its mind is more capable.” This insight dissolves the Cartesian “hard problem” centuries before its formulation. Consciousness is not an immaterial substance but the mental expression of a body embedded in causal networks.
Marx radicalises this insight by adding the historical dimension. Consciousness is not only the correlate of a complex body but of a body transformed by labour, tools, and social relations. When Marx writes that “consciousness can never be anything else than conscious being,” he completes the trajectory that begins with Spinoza’s monism. Spinoza provides the ontology; Marx provides the anthropology and the historical method.
Trotsky extends this further. In Problems of Everyday Life, he insists that consciousness is shaped by the rhythms of production, the organisation of labour, and the ideological apparatuses of class society. Spinoza’s insight into the embodied nature of consciousness becomes, in Trotsky’s hands, a theory of revolutionary consciousness: the capacity of the working class to grasp the necessity of social transformation.
5.Spinoza and Trotsky on Necessity, Freedom, and Determinism
The question of necessity and freedom occupies a central place in both Spinoza’s philosophy and the Marxist tradition. Yet the conceptual architectures through which each thinker approaches the problem differ in form while converging in political and historical significance. Spinoza articulates a monistic determinism in which freedom consists in the adequate understanding of necessity; Trotsky, working within the framework of dialectical materialism, transforms this insight into a theory of revolutionary praxis in which freedom emerges through the conscious intervention of the working class into historically determined processes. The comparison reveals not only a deep structural affinity but also the way in which Marxism completes and historicises Spinoza’s project.
Trotsky’s theory of permanent revolution provides the conceptual framework for understanding Spinoza’s political significance. Spinoza’s democratic republicanism anticipates the bourgeois revolutions of the eighteenth century, but it also contains the seeds of a more radical egalitarianism that can only be realised through proletarian revolution. Spinoza’s critique of superstition becomes, in Marxist hands, a critique of ideology; his defence of democracy becomes a defence of workers’ democracy; his monism becomes the ontological ground of dialectical materialism.
6 Spinoza: Freedom as the Understanding of Necessity
Spinoza’s determinism is absolute. Everything that exists follows from the nature of substance with the same necessity with which the properties of a triangle follow from its essence. Human beings, as finite modes, are no exception. Our actions, desires, and thoughts are determined by the causal order of nature; the experience of free will is an illusion born of ignorance of the causes that determine us. As the uploaded document notes, for Spinoza “freedom… is not free will but the understanding of necessity.”
This conception of freedom is not merely metaphysical but ethical and political. To understand necessity is to liberate oneself from the bondage of passive affects, superstition, and ideological mystification. Spinoza’s critique of religious authority rests on this insight: superstition thrives where causal understanding is absent. Freedom, therefore, is the achievement of adequate ideas — a rational comprehension of the causal order that governs both nature and society.
Yet Spinoza’s determinism is not fatalistic. The more we understand the causes that determine us, the more we participate in the activity of substance itself. Freedom is not the negation of necessity but its conscious appropriation. This is the conceptual core that Marx and Trotsky will later radicalise.
7. Trotsky: Freedom as Conscious, Collective Praxis
Trotsky inherits Spinoza’s insight that freedom is inseparable from necessity, but he transforms it by embedding it within a historical and social framework. For Trotsky, necessity is not the static causal order of nature but the dynamic, contradictory movement of history shaped by class struggle, technological development, and the global expansion of capitalism. Freedom emerges not through individual rational insight but through collective revolutionary praxis.
Trotsky’s critique of voluntarism and fatalism alike reflects this dialectical conception. Against voluntarism, he insists that revolutionary action must be grounded in an analysis of objective conditions; against fatalism, he argues that these conditions do not determine outcomes mechanically but open possibilities that can be realised only through conscious intervention. The working class becomes the agent through which necessity is transformed into freedom.
In The Revolution Betrayed, Trotsky writes that “freedom is the recognition of necessity — and the transformation of necessity into action.” This formulation echoes Spinoza but adds a crucial dimension: the transformation of necessity is a historical process, not a metaphysical one. Where Spinoza locates freedom in the intellect, Trotsky locates it in praxis.
8. Determinism Without Fatalism: A Shared Structure
Both Spinoza and Trotsky reject the notion of free will understood as uncaused choice. Both insist that human action is determined by causes that can be understood and acted upon. Both oppose superstition, mystification, and ideological obfuscation. Yet neither collapses determinism into fatalism.
For Spinoza, determinism is the condition of freedom: only in a universe governed by necessity can rational understanding liberate us from passive affects. For Trotsky, determinism is the condition of revolutionary agency: only in a world governed by historical laws can the working class intervene consciously to transform society.
The difference lies in the level of analysis. Spinoza’s determinism is ontological; Trotsky’s is historical. Spinoza’s freedom is intellectual; Trotsky’s is political. Spinoza’s subject is the rational individual; Trotsky’s is the revolutionary class.
Yet the structural affinity is unmistakable. Trotsky’s dialectical materialism can be read as the historical realisation of Spinoza’s monism: the unity of mind and world becomes the unity of theory and practice; the understanding of necessity becomes the transformation of necessity; the critique of superstition becomes the critique of ideology.
9. Necessity and Freedom in Revolutionary Time
The most profound convergence between Spinoza and Trotsky lies in their shared rejection of contingency as the foundation of human action. For both thinkers, freedom is not the assertion of arbitrary will but the alignment of human activity with the causal structure of reality. In Spinoza, this alignment is achieved through adequate ideas; in Trotsky, through the scientific analysis of capitalism and the strategic organisation of the working class.
Trotsky’s theory of permanent revolution exemplifies this synthesis. The revolution is not a voluntaristic leap but the unfolding of historical necessity — the contradictions of combined and uneven development — realised through conscious action. Spinoza’s dictum that “the more we understand, the more we are free” becomes, in Trotsky’s hands, “the more the working class understands the laws of history, the more it can transform them.”
10. Completing Spinoza: Marxism as the Historical Realisation of Monism
The comparison reveals that Marxism does not break with Spinoza but completes him. Spinoza provides the ontological foundation: the unity of mind and world, the determinism of nature, the critique of superstition. Marx and Trotsky provide the historical and political realisation: the unity of theory and practice, the determinism of history, the critique of ideology.
Spinoza dissolves dualism; Marx dissolves idealism; Trotsky dissolves fatalism. Spinoza grounds equality in nature; Marx grounds it in social relations; Trotsky grounds it in revolutionary praxis. Spinoza’s freedom is the understanding of necessity; Trotsky’s is the transformation of necessity.
In this sense, Trotsky is the most Spinozist of Marxists — not because he repeats Spinoza’s metaphysics, but because he realises its deepest implications in the sphere of history and revolution.
11 Politics, Ideology, and the Democratic Lineage
Spinoza’s political radicalism emerges directly from his metaphysics. If all humans are modes of the same substance, then no divine hierarchy can justify monarchy or clerical authority. His defence of democracy, equality, and secularism is not an ethical preference but a logical consequence of his ontology. His critique of superstition anticipates Marx’s analysis of ideology: both identify false consciousness as the mechanism through which domination is reproduced.
Jonathan Israel’s argument that Spinoza was the first major modern democrat is historiographically significant, but a Trotskyist analysis must go further. Spinoza’s political thought is not merely democratic; it is revolutionary. It articulates the emerging interests of a class whose ascent threatened the existing order. Ann Talbot’s claim that Spinoza was “as responsible as any one person could be for the revolution in consciousness” preceding the Enlightenment captures this dynamic.
12. The Line of Descent: Spinoza → French Materialism → Marxism
The connection between Spinoza and Marx is not retrospective but genealogical. The French materialists — La Mettrie, Diderot, d’Holbach — absorbed Spinoza’s monism and transformed it into a militant atheism that confronted the ideological apparatus of absolutism. Plekhanov’s assertion that “present‑day materialism is a Spinozism that has become more or less aware of itself” captures this continuity. Engels’s remark — “Old Spinoza was quite right” — confirms that Marxism recognised Spinoza as a precursor.
This lineage is not a chain of influence but a sequence of determinate historical transformations. Spinoza’s nature becomes Marx’s social totality. Spinoza dissolves dualism; Marx dissolves idealism. Spinoza grounds equality in nature; Marx grounds it in social relations and class struggle.
Trotsky’s contribution is decisive here. He insists that materialism must be historical and dialectical, capable of analysing the contradictions of capitalism and the dynamics of revolution. Spinoza’s monism becomes, in Trotsky’s hands, a weapon against both idealism and mechanical materialism. The unity of mind and world becomes the unity of theory and practice; the critique of superstition becomes the critique of Stalinist mystification; the defence of democracy becomes the defence of workers’ democracy against bureaucratic degeneration.
13. Scruton and the Conservative Neutralisation of Spinoza
The uploaded document’s contrast between Spinoza and Roger Scruton is a model of Trotskyist ideological critique. Scruton’s work represents the conservative attempt to reclaim Spinoza by stripping him of his revolutionary content. He admires Spinoza’s logical rigour but rejects the egalitarian implications of his monism. He transforms Spinoza into a philosopher of aesthetic consolation, a thinker whose metaphysics can be reconciled with hierarchy, tradition, and the “sacred.”
This is not an innocent misreading but an ideological operation. Scruton’s conservatism is “the ideological antithesis of Spinoza’s rationalism.” Where Spinoza dissolves the sacred, Scruton elevates it; where Spinoza undermines hierarchy, Scruton defends it; where Spinoza insists that social reality can be understood and transformed, Scruton insists it must be accepted. Trotsky would recognise this immediately as the reactionary function of philosophy under conditions of capitalist crisis.
Scruton’s domestication of Spinoza mirrors the Stalinist domestication of Marx: both seek to neutralise revolutionary thought by detaching it from its historical and materialist foundations. A Trotskyist historiography exposes these operations and restores Spinoza to the revolutionary lineage from which he has been severed.
14. Conclusion: Spinoza in the Age of Global Capitalism
Spinoza’s revival reflects the exhaustion of postmodernism and the crisis of bourgeois philosophy. As the ideological coherence of neoliberalism collapses, the materialist tradition — from Spinoza to Marx to Trotsky — re‑emerges as the only framework capable of explaining consciousness, politics, and social transformation. Spinoza was a revolutionary in the Dutch Republic; his ideas remain revolutionary under global capitalism. Marxism does not supersede Spinoza but completes him.
Spinoza’s monism becomes the ontological ground of dialectical materialism; his critique of superstition becomes the critique of ideology; his defence of democracy becomes the defence of workers’ democracy; his rationalism becomes the rationality of revolutionary praxis. In an era marked by deepening inequality, ideological disorientation, and the global crisis of capitalism, Spinoza’s rational, egalitarian, and naturalistic worldview offers not a relic of the past but a resource for the future. Only Marxism, as the dialectical completion of Spinoza’s project, can realise its emancipatory potential.
A Trumpet of Sedition 