Theodor W. Adorno (1903–1969), a German philosopher of Jewish descent, was a sociologist, a musicologist, and a leading theorist of the Frankfurt School. His unique training in both philosophy and music composition provided the aesthetic and critical foundation for his contributions to Dialectic of Enlightenment, which he co-authored with Max Horkheimer during their exile in the United States. Adorno’s work analyzes the interplay between social theory and aesthetics, focusing on how mass culture and authoritarianism shaped mid-20th-century societies. In the book, he outlines The Role of the Culture Industry in Mass Deception and develops the literary-philosophical “excurses” that illustrate the Enlightenment’s self-destruction.

Adorno’s experience combining philosophical criticism with empirical cultural analysis, such as his work on radio research projects in the U.S., lends credibility to his critique. This synthesis of the abstract and the concrete grounds his argument that standardized entertainment functions as a tool of social control. His analysis reveals how mass-produced culture appears to offer pleasure and choice while actually reproducing the logic of domination and commodity exchange. For Adorno, the culture industry represents the Enlightenment’s relapse into myth within the heart of modern life.

Adorno’s primary motivation was to develop forms of thought and art capable of resisting the conformity imposed by instrumental reason and authoritarian politics. His perspective orients the book’s critique toward what he would later call “non-identitarian thinking,” a mode of reflection that respects the particularity of objects rather than forcing them into preconceived categories. 

Adorno’s philosophical commitment drives his literary and philosophical interpretation of authors like Homer and the Marquis de Sade. Through these ‘excurses,’ he highlights the deep anthropological and psychological mechanisms of social regression and the hidden history of domination in Western culture. His analysis demonstrates how the rational subject was forged through sacrifice and renunciation, providing a philosophical prehistory for the administered world.

Immanuel Kant (1724–1804), the seminal German philosopher of the Enlightenment, serves as a crucial reference point in Dialectic of Enlightenment. The author of the foundational Critiques and the 1784 essay “What Is Enlightenment?”, Kant represents the pinnacle of the Enlightenment project, with its emphasis on reason, autonomy, and moral duty. Horkheimer and Adorno use his work as a cornerstone for their analysis, examining both the emancipatory promise of his philosophy and its potential to formalize reason into an instrument of domination.

Kant’s famous definition of enlightenment as humanity’s “emergence from self-incurred minority” provides the canonical starting point that the book interrogates (63). In Excursus II, “Juliette or Enlightenment and Morality,” the authors analyze Kant’s rigorous moral philosophy. They argue that his attempt to ground morality in pure reason, detached from all empirical content, creates a formal system that mirrors the cold, calculating logic of the Marquis de Sade’s work. Kant’s system of moral laws, intended to secure human freedom, risks becoming an abstract and oppressive force when its formal principles are divorced from human feeling and concrete experience.

Methodologically, Kant’s systematic approach, which connects all understanding to universal rules and principles, is presented as a contrast to the purely instrumental calculation that defines the debased form of enlightenment. However, his work also provides a benchmark for the concepts of autonomy and the public use of reason that Horkheimer and Adorno see as essential for genuine freedom. By both inheriting and problematizing Kant’s project, the authors stage the central dialectic of the book: the conflict between reason as a tool for emancipation and reason as a tool for control. Kant thus embodies the Enlightenment’s highest aspirations and its deepest, most self-destructive contradictions.

Donatien Alphonse François, Marquis de Sade (1740–1814), was a French aristocrat and libertine writer whose transgressive novels, many written during long periods of imprisonment, make him a central figure in Dialectic of Enlightenment. For Horkheimer and Adorno, de Sade represents the dark, unacknowledged consequence of the Enlightenment project. His work embodies the inversion of reason into a cold, systematic calculus of power and cruelty, exposing the brutal logic hidden beneath the Enlightenment’s claims to civilized morality.

De Sade is the focus of Excursus II, “Juliette or Enlightenment and Morality,” where he is paired with Kant. While Kant represents the formal, moralistic side of Enlightenment reason, de Sade represents its amoral, instrumental counterpart. The character of Juliette, the protagonist of his novel of the same name, personifies reason as a purely administrative technique. She systematically plans, classifies, and executes acts of cruelty with the same detached rationality that a bureaucrat or scientist applies to their work. In de Sade’s world, the body becomes mere material to be administered, and pleasure is organized according to a law-like system of domination.

De Sade’s methodology, which involves creating exhaustive catalogs of sexual perversions and tortures, mirrors the Enlightenment’s drive to classify and control all of nature. His work demonstrates how the rationalist impulse, when freed from all moral constraints, becomes a tool for organized cruelty. Horkheimer and Adorno argue that de Sade’s writings reveal a disturbing truth: the liberation from traditional taboos and religious authority can culminate not in freedom, but in a new, more insidious form of coercion. De Sade’s importance to the book lies in his exposure of the dialectic between emancipation and domination, showing that the most radical freedom can become the most radical tyranny.

Homer, the ancient Greek poet traditionally credited with composing The Iliad and The Odyssey in the eighth century BCE, provides the foundational literary text for the analysis in Dialectic of Enlightenment. The authors interpret his epic poems, particularly The Odyssey, as early and crucial documents of the enlightenment process itself. In Excursus I, “Odysseus or Myth and Enlightenment,” The Odyssey is read as an allegory of the formation of the Western rational subject through its struggle to master a mythical and threatening nature.

The character of Odysseus becomes the prototype of the bourgeois individual, whose achievement of selfhood illustrates how enlightenment is achieved through cunning, self-preservation, and renunciation. His journey home is a journey of disenchantment, where he must navigate and overcome the archaic, mythical forces that threaten to dissolve his emerging identity. Odysseus’s “cunning” (metis) exemplifies the nascent instrumental reason that allows the subject to manipulate nature and bend it to his will. Horkheimer and Adorno conduct a close, allegorical reading of key episodes, such as Odysseus’s encounter with the Sirens, to illustrate how the self is forged through the suppression of instinct and the postponement of gratification.

This reading of Homer serves a crucial argumentative purpose: It traces the anthropological roots of rational domination back to the very origins of Western civilization. The Odyssey shows how the archaic practice of sacrifice, which sought to appease nature, transforms into a system of calculation and exchange, where the self bargains with mythical powers to ensure its own survival. By grounding their critique in one of Western culture’s most canonical texts, the authors argue that the dialectic of myth and enlightenment is not a modern problem but has been inherent in rationality from its inception. Homer’s epic thus reveals the immense cost of civilization and the deep-seated connection between reason and power.

Friedrich Pollock (1894–1970) was a German economist, sociologist, and a key administrative and intellectual figure in the Institute for Social Research. As a co-founder and later director of the Institute, both in Frankfurt and during its exile, he provided crucial support for the project of Critical Theory. Dialectic of Enlightenment is dedicated to him, signifying his importance to the authors and their work. His primary contribution to the book’s theoretical framework comes from his theory of “state capitalism.”

Pollock’s analysis of the transition from liberal, market-based capitalism to a new phase of planned, administered economies provided the political-economic backdrop for the book. He argued that both fascist and state-socialist regimes represented a new form where political administration supplants market forces without ending domination. This thesis deeply informs Horkheimer and Adorno’s concept of the “administered world.”

Pollock’s work allowed the authors to frame their skepticism toward all forms of modern planned societies, whether totalitarian or democratic. His theory gives economic substance to their idea of “total integration,” connecting their critique of culture and reason to the underlying political and economic structures of the 20th century. He provides the context for understanding how society could become totally organized and controlled, even after the apparent chaos of the market had been overcome.

Max Weber (1864–1920), a foundational figure in German sociology, provides a crucial intellectual precedent for Dialectic of Enlightenment. His influential theses on rationalization and the disenchantment of the world prefigure the book’s central concern with the trajectory of instrumental reason in modern society. Horkheimer and Adorno engage with Weber’s work to construct a sociological genealogy of rationality’s self-undoing.

Weber’s analysis, particularly in works like The Protestant Ethic and the Spirit of Capitalism, links the development of modern capitalism and bureaucracy to a specific form of goal-oriented, calculating reason. He showed how this rationality leads to the “disenchantment” of the world, stripping it of mythic and religious meaning. The authors radicalize this insight, arguing that the process Weber described culminates in the total domination of nature and the reification of human consciousness.

Weber’s legacy for Critical Theory lies in his diagnosis of modernity as an “iron cage” of bureaucratic and instrumental logic. While Horkheimer and Adorno depart from Weber’s value-neutral stance, they adopt his framework to show how the narrowing of reason to pure instrumentality becomes a form of domination. Weber thus supplies a key historical and sociological foundation for the book’s philosophical critique of enlightenment.

Friedrich Nietzsche (1844–1900), the German philosopher and cultural critic, is a vital, if ambivalent, influence on Dialectic of Enlightenment. His pioneering of the genealogical method—a historical critique of the origins of values—provides the authors with a tool for unmasking the hidden assumptions of modern morality and reason. His work is particularly central to Excursus II, which explores the relationship between enlightenment and morality through the figures of Kant and de Sade.

Nietzsche’s relevance to the book’s argument lies in his relentless questioning of moral universals and his focus on the will to power. He foregrounds the ways in which rationality can become an instrument of domination rather than liberation. Horkheimer and Adorno draw on his critique of Christian morality, particularly his claim that values such as equality, pity, and self-denial may arise from the resentment of the weak toward the strong. Alongside de Sade, Nietzsche exposes the connection between reason, power, and self-preservation that respectable bourgeois philosophy often conceals. His refusal to present civilization as straightforward moral progress therefore supports the authors’ central argument that enlightenment can revert to mythology and barbarism.

At the same time, Horkheimer and Adorno reject Nietzsche’s celebration of strength, aristocratic self-assertion, and contempt for pity. They argue that these ideas risk reproducing the domination his genealogical criticism helps to expose. Fascist thinkers exploited this aspect of his writing, turning his critique of morality into an ideological justification for racial hierarchy and violence. The authors nevertheless distinguish Nietzsche’s complex philosophy from its crude fascist appropriation: German fascism both distorted his thought and brought some of its most dangerous implications to a destructive extreme.

Francis Bacon (1561–1626), the English philosopher and statesman, is presented as the emblematic champion of the Enlightenment’s scientific program. As a key advocate for empirical, inductive methodology, Bacon embodied the early modern ambition to master nature through systematic experimentation. Horkheimer and Adorno quote him to establish their central argument about the nature of enlightened reason, noting that his program was to “dispel myths, to overthrow fantasy with knowledge” (1).

Bacon’s famous equation of knowledge with power serves as a primary starting point for the book’s thesis. The authors highlight his belief that science would establish humanity as “the master of nature” and his focus on “operation,” or effective procedure, over contemplative truth (1). For Horkheimer and Adorno, Bacon’s instrumentalist view reveals how the pursuit of knowledge became fused with the will to dominate. Bacon’s ideal—a “happy match between the mind of man and the nature of things” (1)—is reinterpreted as a patriarchal relationship in which the mind conquers a disenchanted nature. This alliance of science with power, they argue, sets the course for reason’s evolution into a tool of universal control, ultimately reducing both nature and humanity to mere material for manipulation.