Presented is a self-curated synthesis that beautifully weaved together the world that occupied Adorno and Habermas’s minds. I hope you enjoy it.

The Argument That Remains

PROLOGUE — Pacific Palisades, 1944

The Pacific was out there somewhere, past the canyon, past the eucalyptus. At night you could smell it. Theodor Adorno had moved to this neighborhood the year before, into a rented house near the top of a hill, and he sometimes thought there was something almost comic about his situation: the heir to the most serious tradition in German philosophy, exiled to a city whose entire economy ran on the manufacturing of illusion.

He was writing at night. He wrote at night because the days were loud — the radio, the war news, the neighbors — and because night was when the real work seemed possible. His collaborator Max Horkheimer lived nearby, and they had developed a habit of exchanging drafts in the morning and arguing through the afternoons, and then going home to write separately again, and this had been going on for several years. The book they were working on did not have a clean title yet. They called it many things. What it was, finally, was an attempt to answer a question that felt to Adorno like the only question worth asking: how did it happen?

Not how did they come to power, not what political mistakes were made, not what the French should have done differently at the Marne. The deeper question. How did the country of Kant and Hegel and Beethoven produce the machinery at Auschwitz? How did the civilization that invented the concept of universal human dignity — the civilization that said, for the first time in history, that every person had an intrinsic worth that could not be bargained away — how did that civilization produce the precise, methodical, industrially efficient annihilation of an entire people?

The answer they arrived at was the one that nobody wanted. The problem was not that the Nazis had abandoned reason. The problem was that they had followed it.

Enlightenment reason — the reason of science, of classification, of mastery — had always been, at its core, about control. To know something was to dominate it, to render it calculable, to strip away its particularity until it could be processed by a universal formula. This impulse had produced the scientific revolution, and medicine, and the locomotive, and penicillin. It had also produced the administrative apparatus that sorted human beings into categories and calculated how many could be killed per day given the rail capacity. These were not different applications of the same tool. They were the same logic, followed to different conclusions. The death camp was the culture of efficiency made concrete. The culture industry — Hollywood, the radio, the hit parade — was the same logic applied to leisure. You were administered either way. You were either a unit of production or a unit of consumption, and in either case you were no longer a person.

Adorno wrote this down. He looked out at the Pacific and wrote it down again. Outside the window, the lights of Los Angeles extended to the horizon. Somewhere in that enormous brightness, studios were producing films about heroism and romance and the redemptive power of individual will. Somewhere in Germany, trains were running on schedule.

SECTION ONE — Frankfurt, 1903 / North Rhine-Westphalia, 1945

The house where Adorno grew up was full of music, in the specific way that distinguished the cultivated German bourgeoisie from every other kind of comfortable family: not as entertainment but as the atmosphere in which thinking happened. His mother, Maria, was a professional singer, trained in Italy, with a voice that guests described as uncommonly warm. His aunt, who lived with them, was a pianist of near-professional skill. As a small boy, Theodor would sit in the hallway during his mother’s practice sessions and listen to the sound change as it traveled through the walls. He understood, earlier than he could articulate, that music was not decorative. It was a form of knowledge.

His father was a successful wine merchant, Jewish and assimilated, who had converted to Protestantism and given his son a German surname and a position of complete security in the educated middle class. What this position conferred, beyond material comfort, was access: to books, to argument, to the company of serious adults who believed that ideas were consequential. By the time Adorno was a teenager, a family friend named Siegfried Kracauer — a cultural critic, a few years older, who would himself eventually become an important theorist of film and modernity — was reading Kant with him on Saturday afternoons. Not as preparation for an examination. As the serious thing that two people who respected each other did together.

Kant; the philosopher who had argued, a hundred and fifty years earlier, that there was a moral law written into the structure of reason itself. That every human being, simply by virtue of being rational, was a subject of unconditional worth. That you must treat humanity — in your own person and in the person of every other — always as an end, never merely as a means. Adorno read this and believed it and then watched, over the subsequent two decades, as the civilization that claimed this inheritance built the gas chambers.

Three decades later and thirty kilometers to the northwest, in the provincial towns of North Rhine-Westphalia, a boy named Jürgen was growing up in a family that had neither opposed the Nazi regime nor actively supported it — the posture of the educated conservative middle class, which had its own kind of moral clarity, the clarity of looking away. His father had been an active sympathizer, which (Jürgen) Habermas would only later fully reckon with. The family was not wealthy; the father ran a local trade association. They were respectable. They were provincial. They were, in the way of a great many Germans in those years, simply there.

In 1944, when Habermas was fifteen, he was called up to man a defensive position on the western front. The war was already lost; everyone knew it. The positions were meaningless. He was given a uniform and a rifle and told to hold something that could not be held, and this seemed, at the time, not quite real — like an administrative exercise in a very serious game. Then the war ended.

The information came in pieces: radio broadcasts, newsprint accounts, the strange authority of official documentation. The Nuremberg trials. The photographs. The testimony. The numbers. Habermas was sixteen, and he was learning — in the specific way that a fact can arrive not as information but as a transformation — what had been done. Not somewhere else, not by some other civilization, but here. By the country whose history he had been taught as a story of philosophical achievement, whose language was the language of Kant and Goethe and Beethoven.

He gave an interview in 1979 in which he tried to describe this. The sentence he reached for was almost plain: We learned that the bourgeois constitutional state — in its French, or American, or English form — is an historical achievement. Not a given. Not something the arc of history was always bending toward. An achievement. The kind of thing that had to be built, and could be destroyed, and once destroyed could not be assumed to rebuild itself.

The word achievement is doing enormous work in that sentence. It contains within it the recognition that everything Habermas had been raised to take for granted — the rule of law, the freedom to argue publicly, the state’s obligation to justify itself to its citizens — was not the natural condition of human societies. It was a particular, fragile, hard-won thing. And when he was sixteen, he understood this not as an abstract proposition but as the felt consequence of its absence.

SECTION TWO — Vienna, 1925 / Los Angeles, 1944

In 1925, Adorno traveled to Vienna to study composition with Alban Berg, a student of Arnold Schoenberg and one of the central practitioners of what was then called the Second Viennese School. What this school was doing, technically, was abandoning tonality — the system of keys and harmonies that had organized Western music for three hundred years. Schoenberg’s twelve-tone method treated all notes as equally weighted, with no home key, no resolution toward which the music was moving. It sounded wrong to most ears. It was supposed to.

Adorno spent two years there, and he came away with something that is difficult to describe without sounding fanciful: a theory of music as social truth-telling. The argument, which he would spend the rest of his life elaborating, was that the formal properties of music are not arbitrary. Tonal music — the music of Beethoven, of Brahms, of Schubert — achieves its effects by creating tension and then resolving it. The dissonance leads to the consonance; the question leads to the answer; the uncertainty arrives at home. This formal journey mirrors a social and philosophical promise: that contradictions are temporary, that suffering leads to resolution, that the human story has meaning.

Schoenberg’s music refused this. The dissonances did not resolve. The tension was held without release. And Adorno believed that this refusal was more honest than comfort — that after 1914, after the industrialized slaughter of the Western Front, after the Russian Revolution and the rise of fascism, a music that ended in resolution was lying about the world it inhabited. Aesthetic beauty had become a form of false consciousness. The only honest music was music that refused to console.

This is an unusual way for a social theorist to begin, and it marks everything that followed. Adorno never stopped thinking about aesthetics and social theory as the same inquiry. When he arrived in Los Angeles in 1941 and began to observe the American culture industry — the studio system, the radio, the advertising, the manufactured celebrity — he brought with him the sensibility of a man who had studied with Alban Berg, who knew what it meant for an art form to lie.

What he saw horrified him in its clarity. Hollywood did not produce entertainment. It produced a specific affective state: the sensation of having experienced something meaningful without having been disturbed. The films told stories of individual triumph and romantic resolution that left audiences feeling both satisfied and unchanged. The radio played music calibrated to move without provoking thought. The advertisements sold not products but identities — the promise that purchasing the right commodity would resolve the incompleteness that the market had itself created. The whole system was a machine for the reproduction of the existing order through pleasure.

And the machine worked - that was the thing. People were not coerced into consuming mass culture. They loved it. They chose it freely, returned to it voluntarily, organized their leisure around it, and reported being satisfied. If you were a Marxist of the traditional variety, this was a puzzle: why didn’t the workers rise up? Part of Adorno’s answer was that they didn’t need to be coerced — they had been administered. The culture industry had done to consciousness what the assembly line had done to labor: divided it into standardized units, eliminated surprise, and delivered a product that was technically varied but structurally identical. Every Hollywood film was different. Every Hollywood film was the same. The variety was the mechanism. You couldn’t resist what kept changing its face.

He wrote all of this down, in the rented house above the canyon, while the lights of Los Angeles spread beneath him. In the mornings he exchanged drafts with Horkheimer. In the afternoons they argued. In the evenings there was nothing to do but look at what they had made.

It was a diagnosis of complete capture. Reason had become administration. Culture had become its own most effective instrument of pacification. There was no outside from which to critique the inside, because the culture industry had colonized even the imagination of outside. The conclusion was not hopeful. Adorno knew it was not hopeful. He wrote it down anyway, because that was the one thing he could do that seemed different from producing another Hollywood film: tell the truth about the cage without pretending the door was open.

SECTION THREE — Frankfurt, 1956–1959

Habermas arrived at the Institute for Social Research in the fall of 1956, twenty-seven years old, hired as Adorno’s Assistent. He had just finished his doctoral dissertation on Schelling. He had read the Dialectic of Enlightenment and knew it almost by heart. He had enormous respect for Adorno and regarded the appointment as an extraordinary piece of fortune.

The Institute occupied a building on Senckenberganlage, not far from the university. Horkheimer had rebuilt it after the war with American foundation money and the cautious blessing of the Federal Republic, which had a complicated relationship with its most famous school of Marxist social theory. The political temperature of the Federal Republic in 1956 was itself a kind of case study: a democratic state built on the ruins of a totalitarian one, run largely by men who had served the earlier regime and never been asked to account for it, governed by a constitutionalism that was genuine and functional and completely unwilling to reckon with its own prehistory. Adorno found this obscene. Habermas found it an object lesson in both the fragility and the necessity of democratic institutions.

What Habermas learned from Adorno in those three years was not what the seminar syllabuses would suggest. He learned how to think at the level of historical consequence — how to ask not just whether an argument was logically valid but what the argument did in the world, what it served, what it concealed. He learned that every apparently neutral methodological commitment was in fact a social commitment, that the choice to study society using the tools of positivist social science was itself a decision about what society was for. He absorbed Adorno’s insistence that the proper business of social theory was not to describe the world but to think it against itself — to use the world’s own stated ideals as the lever with which to criticize the world as it actually existed.

But he could not follow Adorno to the end. This became clearer as the months passed.

The problem was structural, and Habermas had been circling it without fully naming it since he first read the Dialectic of Enlightenment. Adorno’s diagnosis required a position from which to criticize. If reason had become entirely instrumental, entirely complicit with domination, then the critique of domination had no ground. If the culture industry had colonized consciousness so completely that even the imagination of alternatives was administered, then the critical theorist was not standing outside the cage and describing it — the critical theorist was inside the cage, using the cage’s own materials, producing one more product to be consumed and forgotten. Adorno knew this. It was part of why his prose was so deliberately difficult: if you made your critique too accessible, too legible, too easy to assimilate, you had already been absorbed.

But Habermas kept pressing: was there anything at all that escaped? Was there any form of reason that the culture industry had not colonized? Any interaction, any moment of human communication, that was not already administration?

Adorno’s answer was: not really. Art, perhaps — the kind of art that refused to console, that held its dissonances without resolution. The fragment, the aphorism, the arresting image that refused to become a system. But there was no social practice, no ordinary human interaction, no institutional form that had escaped. The cage was complete.

This was the position Habermas could not accept. Not because he wanted easy comfort — he had read the documents of Nuremberg, he knew what human beings were capable of — but because the position had a logical consequence that made social theory impossible. If there was no ground, there was no critique, only description. If all reason was domination, the critical theorist was not offering liberation but one more sophisticated justification for staying put. The Dialectic of Enlightenment was the most powerful social critique of the twentieth century and it had painted itself into a corner. Adorno was brilliant enough to know this and honest enough not to pretend otherwise. He stayed in the corner and produced works of extraordinary rigor and despair.

Habermas wanted the door.

He did not have it yet. In 1959, Horkheimer — who had returned from an extended stay in the United States and found the young assistant’s intellectual ambitions alarming — maneuvered to have him dismissed, calling him a dangerous Marxist, which was rich coming from the co-author of the Dialectic of Enlightenment. The official version involved questions of academic procedure; the real version involved Horkheimer’s control of the Institute and his distaste for a student who was beginning to outgrow him. Adorno did not fight hard enough to keep him. Habermas left for Marburg.

He kept the question.

SECTION FOUR — Frankfurt, 1968 / Starnberg, 1971–1981

There is a photograph from this period that has become iconic in German intellectual history. It shows Adorno at the front of a lecture hall, in profile, and in the background, slightly out of focus, standing to the right, a young Habermas watches. The photograph is from 1964. Within four years, they would be on opposite sides of a confrontation that neither of them wanted.

The student movement arrived in Germany with a particular ferocity. It arrived everywhere with ferocity, but in Germany it carried additional weight: the students were the generation born after the war, raised in the Federal Republic, educated partly by men like Adorno in the specific tradition of critical theory, which had taught them to regard existing institutions not as achievements but as potential instruments of oppression. They had taken the lesson seriously. They had perhaps taken it more seriously than their teachers intended.

In 1967, a student named Benno Ohnesorg had been shot and killed by a police officer during a demonstration in West Berlin. The protests that followed were enormous. The universities became charged with a political energy that had no clear outlet and no agreed-upon direction. Habermas had been critical of the policing, had defended the students’ right to demonstrate, had even spent time at the demonstrations himself.

But as 1968 unfolded, something shifted. The students were no longer simply demonstrating. Some of them — the most radicalized, the ones who had read Mao alongside Adorno, who had taken the critique of bourgeois democracy as a license for tactics that democracy could not permit — began talking about provocation, about forcing the state to show its violent face, about the revolutionary necessity of burning things down. This was, in Habermas’s view, not politics. It was the abandonment of politics.

At a conference in Hannover, in June 1968, Habermas used the phrase left-wing fascism. He was describing a tendency, not a movement, and he aimed it at the most extreme factions rather than the students as a whole. He would regret the phrase for the rest of his life. It was too harsh, he acknowledged. It was a mistake. But the mistake was formal, not substantive. What he was trying to say was something he believed then and would believe for the next six decades: that the willingness to abandon communicative process — to replace argument with action, reason with force, the open-ended discussion of what is right with the certain knowledge of what must be done — was not revolutionary. It was the same structure as fascism, whatever the content. The content was irrelevant. The structure was everything.

The students did not forgive him. Some of them he had taught. Many of them had his books in their apartments. They found the phrase unforgivable, and they were not entirely wrong. But the argument behind the phrase — that reason, specifically communicative reason, specifically the slow and frustrating and inconclusive process of people trying to persuade each other — was not a bourgeois luxury but the precondition of any politics worth the name: this argument they largely rejected, and Habermas held it anyway.

In 1969, the students occupied the Institute for Social Research. Adorno called the police. His students — the generation he had shaped, who had taken his critique of administered society and turned it into a politics he had not authorized — occupied the building he had spent twenty years rebuilding, and he had them removed by force.

That summer he went walking in the Alps, near Visp, in Switzerland. He had a heart attack on a trail and died on the sixth of August. He was sixty-five. It is not possible to know whether the accumulated weight of the confrontation with his students — the betrayal of being criticized by the tools he had forged, the despair of seeing the critique of domination become a new will-to-power — contributed to his death. It is not the kind of thing that can be proven. It is the kind of thing that can be held.

Habermas went to Starnberg in 1971. He had been offered the directorship of the Max Planck Institute for the Study of Living Conditions in the Scientific and Technical World, a position that gave him resources, time, and distance from the burnt atmosphere of Frankfurt. He arrived with a plan — not fully formed, but directional. He was going to build what Adorno had left impossible: a critical social theory with its own normative foundations. A theory that could name what was wrong with the world and explain, without contradiction, why it was wrong.

The decade that followed was the hardest work of his life. He read everything. Weber again, more carefully — and in Weber’s massive sociology of rationalization he found both the diagnosis he needed and the limitations he would have to overcome. Weber had described the spread of instrumental reason through modern institutions with devastating precision. His iron cage — the bureaucratic world in which every relationship is reduced to calculation, every action is evaluated by its efficiency, every value is merely someone’s preference — was the most powerful analysis of modernity’s costs that anyone had produced. But Weber had no exit. He thought the cage was permanent because he thought reason was permanent — because he couldn’t see that there was any other kind.

Habermas found the other kind in an unlikely place: language.

The argument begins simply and then opens into something enormous. When two people speak to each other — genuinely speak, with the intention of being understood rather than simply complied with — they implicitly commit to three things. They claim that what they are saying is true. They claim that saying it is appropriate to their relationship and situation. And they claim that they mean it sincerely. These are not optional extras: they are the structure of the speech act itself. You cannot make an assertion without implicitly claiming it is true. You cannot make a request without implicitly appealing to some norm that makes the request legitimate. Even deception presupposes these commitments — the liar exploits the assumption of sincerity that is built into the act of speaking.

What this means is that every genuine act of communication contains within it the seed of its own evaluation. Every statement can be challenged on three grounds: Is it true? Is it right? Are you sincere? And built into the very act of challenging — into the practice of argumentation itself — are further commitments: that the better argument should prevail, that reasons should be given and tested, that the force of the better argument is the only legitimate force in this domain. These commitments are not ideals that good people choose to honor. They are the preconditions of communication as such. You cannot speak your way out of them.

Habermas called this communicative rationality, and he distinguished it from the instrumental rationality that Weber and Adorno had rightly identified as pathological. Instrumental rationality is reason aimed at control — at the most efficient production of a predetermined end. Communicative rationality is reason aimed at understanding — at the mutually agreed recognition of truth, rightness, and sincerity. The two are not the same. They are not even similar. And crucially, communicative rationality is prior: you cannot deploy instrumental reason without first presupposing a communicative infrastructure in which words mean things, agreements are possible, and deception is distinguishable from truth.

This was the ground Adorno said didn’t exist. It was there the whole time, inside every human sentence.

He sat with this insight for ten years. He tested it against Weber’s sociology, against Marx’s theory of social evolution, against Durkheim’s account of how societies achieve moral integration, against the American philosopher George Herbert Mead’s extraordinarily suggestive account of how the self emerges through communication with others. He read the speech-act theorists — Austin, Searle — and found in their technical work on what it means to do things with words the machinery for a new theory of social action. He read Piaget and Kohlberg, the developmental psychologists, and found in their stages of moral development a model for how rationality itself develops — not as the property of an isolated mind but as something that emerges through interaction with others.

The book he built from all of this was published in 1981. Two volumes. Twelve hundred pages. Theorie des kommunikativen Handelns — the Theory of Communicative Action.

The argument, compressed to its skeleton, is this. Modern societies exist on two levels simultaneously. The first level is the lifeworld — the sphere of culture, family, everyday human relationship, the background of shared meaning within which all communication takes place. The lifeworld is not a place or an institution; it is the accumulated sediment of all the communicative acts through which a society has ever reproduced itself. It can only be maintained through more communicative acts: through people genuinely engaging with each other, arguing, caring, teaching, loving, grieving — through all the practices by which human beings transmit meaning to each other and to the next generation.

The second level is the system — the economy and the state bureaucracy, which coordinate massive numbers of actions not through communication but through what Habermas called steering media: money and power. Markets don’t require that buyers and sellers understand each other, share values, or reach genuine agreement. They require only that each party responds to price signals. Bureaucracies don’t require that administrators and citizens communicate; they require only that rules are followed. The system can coordinate complexity that communicative action could never manage. It is not inherently pathological. It is a relief mechanism — it handles what face-to-face communication cannot.

The pathology begins when the system invades the lifeworld. Colonization is Habermas’s word for it. When healthcare becomes purely a market, when education becomes job training, when family relationships are structured by legal and economic calculation, when even friendship is optimized for its return — the lifeworld loses its capacity to reproduce itself through communication. The shared meanings that make communication possible erode. People start relating to each other as strategic actors rather than communicative ones: as means rather than ends. The culture doesn’t collapse dramatically. It hollows out. It produces what a psychiatrist would call, one patient at a time, anxiety and depression and anomie, and what a sociologist would call the crisis of meaning, and what Habermas called the systematic distortion of the communicative infrastructure of social life.

Auschwitz was the extreme case. But the same logic — the logic of the system colonizing the domain that can only be maintained through communication — was visible in the welfare state that reduced citizens to clients, in the media that replaced argument with spectacle, in the universities increasingly organized around career preparation rather than the formation of people who could argue, evaluate, and decide. The cage was not built all at once. It was furnished, over decades, one installation at a time.

He submitted the manuscript in 1980. He was unhappy at Starnberg for reasons that were never fully explained — institutional politics, interpersonal friction, the accumulated small humiliations of a decade’s work in an organization he had not built. The year the book was published, 1981, he resigned and returned to Frankfurt. The book appeared. The field argued with it, and continues to argue with it, and the argument has not stopped.

SECTION FIVE — The Wager and What It Costs

It is worth pausing, at the end of this enormous labor, to ask what Habermas had actually claimed.

He had not claimed that human beings are naturally cooperative. He had not claimed that actual conversations reliably produce justice. He had not claimed that the ideal speech situation — the hypothetical condition in which all participants engage with each other as equals, motivated only by the force of the better argument, free from coercion and manipulation — actually exists anywhere. He was a rigorous enough thinker to know that it doesn’t. Every actual conversation is contaminated by power, by asymmetry, by the distortions that the system introduces. Every actual democracy is full of strategic actors using communicative form to pursue non-communicative ends. Every parliament contains people who have no interest in the better argument and every interest in the effective argument.

What he claimed was narrower and more durable. He claimed that the commitment to communicative reason is built into the structure of speech itself — that even the person who is deceiving you, manipulating you, strategically exploiting your good faith, is presupposing the very norms they are violating. The liar depends on the assumption of sincerity. The manipulator depends on the assumption of good faith. The person who drowns out argument with force is acknowledging, by the very act of drowning it out, that argument could otherwise prevail. You cannot coherently argue that argument doesn’t matter. The normativity is inescapable.

This is why colonization is not just a social problem but a kind of self-destruction. A society that systematically eliminates the spaces in which communicative reason can operate is not merely choosing an alternative form of social organization. It is dismantling the infrastructure on which any social organization depends. Including its own.

The question his critics pressed — and it is a real question, a hard one — is whether this matters. The gap between what the theory requires and what any actual human society produces is vast. Habermas had located reason in language. But language is also the medium of propaganda, of advertising, of political rhetoric, of every manipulation that has ever been performed on a population that was supposed to be communicating. His response was that these pathologies could only be named as pathologies from within the very communicative framework they violated. The fact that advertising manipulates is a critique. The critique presupposes a standard. The standard is communicative reason. You are always already inside it.

Whether this is reassuring or not depends on what you were hoping for.

In 2004, Habermas sat down with Cardinal Joseph Ratzinger — who would within the year become Pope Benedict XVI — for a public dialogue about reason and faith in secular societies. It was a strange encounter: the man who had spent fifty years defending the Enlightenment project against its critics from the left, sitting across from the man who would spend his papacy defending it against certain kinds of secular overreach. They agreed on more than either expected. Habermas conceded that secular reason, including communicative reason, could not fully account for the motivations it required. It needed people to care about the outcome of argument — to want, actually, to reach agreement with strangers. And this wanting was not something reason could produce on its own. It was something that had to be sustained by practices — by the rituals and solidarities and inherited moral intuitions that secular modernity had been systematically eroding.

He did not retract anything. He enlarged the problem.

The colonization of the lifeworld that he had named in 1981 had not slowed. It had accelerated. The media environment he had described as the replacement of rational-critical discourse with spectacle had, by the first decades of the twenty-first century, become something he had not anticipated: not just passive spectatorship but active, participatory, algorithmically optimized fragmentation. The public sphere — the space in which private individuals come together to reason about common concerns — had been technically expanded to include virtually everyone and functionally destroyed by the resulting noise. You could now communicate with millions of people. None of them were listening. Everyone was broadcasting.

Habermas wrote about this. He had always written about this — always, for seventy years, in journals, in newspapers, in books with titles that announced their ambitions and then spent five hundred pages arguing for them. He was Germany’s foremost public intellectual and he used that position the way he believed it should be used: not to display his intelligence but to make arguments, publicly, for positions he held on grounds he was prepared to defend. He intervened in the Historikerstreit of 1986, when conservative German historians tried to relativize the Holocaust by comparing it to Soviet atrocities — he said no, in print, at length, on philosophical grounds. He argued for European integration when it was unfashionable and against the Iraq War when that was uncomfortable and for a constitutionalization of international law that would require nation-states to accept external accountability. He was, in the root sense of the word, a democrat: a person who believed that the only legitimate source of political authority was the reasoned agreement of the people who were subject to it.

He died in January 2026, aged ninety-six. He had been writing until near the end.

The story of Adorno and Habermas is ultimately the story of an inheritance refused and a problem inherited anyway. Every generation that takes the question seriously — why did it happen, how do we prevent it, what would it take for things to be otherwise — is continuing an argument that began in a rented house above the Pacific, where a man who had read Kant as a child was trying to understand what Kant’s civilization had done.

The argument continues, and that it continues is not nothing.