Roger Pilon (b. 1942) is an American political philosopher, constitutional theorist, and legal scholar whose work across more than four decades has shaped modern libertarian constitutionalism, and whose name now stands among the foremost American advocates of natural-rights theory, limited government, economic liberty, and constitutional originalism. Through his long association with the Cato Institute, where he founded the Center for Constitutional Studies in 1989 and served thereafter as vice president for legal affairs, Pilon became an architect of the libertarian legal movement, and his writings on natural rights, judicial review, property, federalism, and constitutional interpretation have reached scholars, judges, litigators, and policymakers who otherwise share little common ground.
His path to intellectual life departed from the conventional academic route in ways that mark the rest of his career. Born in Vermont and raised near the village of Galway in rural upstate New York, Pilon enrolled at Syracuse University as an engineering major, switched to music, and, finding neither discipline satisfying, left formal education for roughly seven years, a stretch he later described as an intellectual odyssey of various jobs, wide reading, and slow movement toward philosophy, political theory, economics, and law. He returned to higher education in 1968 with a clearer sense of purpose and took a bachelor’s degree in philosophy from Columbia University in 1971.
Pilon continued at the University of Chicago, where he earned a master’s degree and a doctorate in philosophy. His dissertation, A Theory of Rights: Toward Limited Government (1979), examined the philosophical foundations of individual rights and the moral limits of political authority, and it carried the marks of three influences who supervised or surrounded the project: the philosophers Alan Gewirth (1912-2004) and Alan Donagan (1925-1991), who directed the work, and the economist Milton Friedman (1912-2006), whose presence at Chicago colored the broader intellectual setting. During these years Pilon also met the law-and-economics scholarship then forming at Chicago, a body of thought that would inform his later constitutional writing.
The defense of natural rights has supplied the central theme of his career. Drawing on John Locke (1632-1704), the American Founders, and the wider classical liberal inheritance, Pilon argues that individuals hold rights because of their nature as rational and purposive agents, that such rights do not originate in government, and that governments instead come into existence to secure rights already in place. On this account the legitimacy of any political institution turns on how well it protects life, liberty, and property while respecting the equal rights of others.
This starting point leads him to a sharp distinction between liberty rights and welfare rights. Liberty rights guard the individual against coercion and interference. Welfare rights, by contrast, require government to compel some men to furnish resources or services to others. Pilon argues that governments may choose to establish social programs, yet such programs ought not be mistaken for fundamental rights, a position that places him within the classical liberal tradition and that has shaped his criticism of expansive government programs and regulatory systems.
Property occupies a place near the center of his thought. He treats property not as an economic institution alone but as a condition of personal independence, holding that secure control over one’s labor and possessions guards the other liberties, which grow vulnerable without it. Much of his scholarship therefore criticizes the judicial doctrines and regulatory practices that weaken constitutional protection of private property, and he has pressed a long argument against eminent-domain abuse, against heavy regulation, and against doctrines that let governments load substantial burdens on owners without compensation.
His constitutional theory joins originalism to a broader commitment to the principles of the American Revolution as stated in the Declaration of Independence. Pilon argues that the Declaration of Independence supplies the moral ground of the American constitutional order and that the Constitution then builds the institutions meant to secure those principles, and for that reason he rejects procedural or majoritarian readings of constitutional government, holding that democratic majorities carry legitimate authority only within the boundaries set by individual rights.
A defining feature of his legal philosophy has been a long quarrel with judicial restraint. Across the late twentieth century many conservative legal thinkers, Robert Bork (1927-2012) foremost among them, argued that judges should defer to legislatures except where a constitutional violation appears explicit and unmistakable. Pilon refused that view. He held that courts carry an affirmative duty to protect liberty against governmental encroachment and should not presume the constitutionality of legislative acts, and decades before the term gained currency he argued for what later acquired the name judicial engagement, an approach under which courts enforce constitutional limits on government power and give substantive protection to individual rights.
His scholarship on the Fourteenth Amendment shows the same commitment. Pilon argues that the Privileges or Immunities Clause of the Fourteenth Amendment was meant to protect substantive individual rights against the states, and he regards the Supreme Court’s decision in The Slaughter-House Cases as among the gravest constitutional errors in American history because it drained that clause of force. Restoring the clause to its original meaning, he contends, might strengthen constitutional protection for economic liberty, property, and other freedoms.
Though known mostly as a scholar, Pilon also gathered considerable government experience. Under the administration of Ronald Reagan (1911-2004) he held a series of senior policy posts at the Office of Personnel Management, the Department of State, and the Department of Justice. At the Justice Department he served as the first director of the Asylum Policy and Review Unit, where he worked on refugee and asylum questions during a period of large international migration and Cold War strain, and the experience deepened a skepticism toward bureaucratic expansion and confirmed his sense that administrative agencies often wield powers hard to square with constitutional principle.
One episode from these years carried a personal cost. A lengthy inquiry by the Department of Justice’s Office of Professional Responsibility considered an alleged disclosure of classified information, and Pilon maintained his innocence throughout. After his clearance he brought suit under the Privacy Act, arguing that confidential information about the investigation had leaked. The litigation ended in his favor with a substantial settlement, an outcome that hardened his standing as a critic of governmental abuse and administrative misconduct.
Before his government service Pilon taught philosophy at California State University, Sonoma, and philosophy of law at Emory University School of Law, and he held a fellowship at the Hoover Institution and a senior fellowship at the Institute for Humane Studies. These posts tied him to a widening network of scholars devoted to free markets, constitutional government, and classical liberal ideas.
In 1989 Pilon joined the Cato Institute and founded what became an influential center for constitutional study. Under his direction the Center for Constitutional Studies advanced scholarship on limited government, federalism, economic liberty, and judicial review, and it grew into a venue for debate over constitutional interpretation and legal reform. Pilon organized conferences, sponsored research, testified before Congress, and built relationships among academics, judges, litigators, and policy experts drawn to the project of restoring constitutional limits on government power.
Among his lasting institutional achievements stands the Cato Supreme Court Review, which he created in 2001. Conceived as an annual study of the Court from a classical liberal vantage, the publication became a respected forum for legal analysis and constitutional argument. Pilon served as its founding publisher and later as publisher emeritus, and through the Review and the wider work of Cato’s constitutional program he carried libertarian legal arguments into the mainstream discussion of constitutional law.
He has written across a wide range of subjects, from free speech, federalism, and economic liberty to drug prohibition, judicial review, constitutional history, and international human rights, and he has edited volumes that include Flag-Burning, Discrimination, and the Right to Do Wrong, The Politics and Law of Term Limits, and The Rule of Law in the Wake of Clinton. His writing returns again and again to the danger of concentrated political power and to the place of constitutional constraint in the preservation of individual freedom.
Unlike many conservative constitutional theorists, Pilon grounds rights in reason rather than theology. He acknowledges the historical weight of Christianity on Western political development, yet he argues that natural rights admit of justification through philosophical reasoning open to all men whatever their religious belief, a rationalist orientation that reflects both his philosophical training and his continuing engagement with Enlightenment political thought.
His influence runs past libertarian circles. Scholars who work on judicial engagement, constitutional originalism, economic liberty, and limits on administrative power often take up arguments that Pilon helped form decades earlier, and while critics challenge his reliance on natural-rights reasoning and his skepticism toward the modern regulatory state, even opponents grant his standing as a consistent defender of classical liberal constitutionalism.
Pilon remains a senior fellow at Cato and continues to write and speak on constitutional questions, property, the Declaration of Independence, and the proper scope of government. His later writing circles back to the themes that have held him throughout: the moral foundations of liberty, the hazards of unconstrained political power, and the constitutional architecture built to protect individual rights.
He is married to Juliana Geran Pilon, a Romanian-born philosopher, author, and scholar of democracy and international affairs, and their shared formation in philosophy reflects a long intellectual partnership rooted in a common interest in political thought and the defense of free societies.
The significance of Roger Pilon rests not in his scholarship alone but in his work as a bridge among academic philosophy, constitutional law, and public policy. At a time when many legal scholars settled into either abstract theory or practical litigation, Pilon tied foundational questions about rights and human freedom to concrete constitutional disputes, and through that effort he became an architect of contemporary libertarian legal thought and a leading advocate of limited constitutional government in modern America.
The Sociology of Philosophies
Randall Collins (b. 1941) wrote The Sociology of Philosophies to press a hard claim about how ideas rise. Thinkers do not win on the strength of their arguments alone. They win on position in a network. The eminent cluster with the eminent, master to pupil and rival against rival, and the names that survive tend to sit at the dense crossings of these chains. Collins read two and a half millennia of philosophy this way and found one shape across cultures and centuries: a small set of linked figures holds the attention of each generation, the link comes first and the fame second, and the texts that endure carry the emotional charge of the gatherings that produced them. Set Pilon against this frame and the life hands the frame its data.
Begin with the chain that formed him. Collins holds that creative thinkers descend from creative thinkers, that cultural capital and emotional energy pass down master-pupil lines the way an inheritance passes down a family. Pilon took his doctorate at Chicago under Gewirth and Donagan, two philosophers already at work on the foundations of rights and moral agency, and he did so within reach of Friedman and the law-and-economics scholarship then gathering force at the same place. On Collins’s reading this matters more than any single book Pilon later wrote. He arrived at his own work charged by contact with men who held the attention of their fields, and he carried their problems forward as his own. Gewirth argued rights from the structure of rational agency. Pilon’s dissertation, A Theory of Rights: Toward Limited Government, took up that thread and ran it toward constitutional limits. The continuity reads less as borrowing than as descent.
Collins adds a second law, the one he calls the law of small numbers. The attention space of any field holds room for only a handful of active positions at a time, somewhere between three and six. Below three there is too little conflict to hold an audience. Above six the field splinters and no position commands notice. Rivals therefore define one another, and a thinker secures his slot by standing against the men who hold the neighboring slots. Place Pilon here and his quarrel with judicial restraint comes into focus. Across the late twentieth century the conservative legal field organized itself around restraint, and Bork held that position with authority. Pilon took the opposing slot and argued for what later acquired the name judicial engagement: courts that enforce constitutional limits rather than defer to legislatures. The two positions sharpen against each other. Engagement needs restraint to push against, and the energy of the argument comes from the opposition as much as from the substance. Collins would read the pairing as structural before it is philosophical.
The third element is the base. Collins insists that no intellectual position survives without an organizational base and a patron to fund it. Monasteries carried medieval philosophy. Universities and academies carried what came after. Shift the base and the field shifts with it. Most thinkers inherit a base, a chair in a department built by men who came before. Pilon built his own. He had taught at Sonoma and at Emory and had held fellowships at Hoover and the Institute for Humane Studies, the ordinary stations of an academic career, and then in 1989 he left that path and founded the Center for Constitutional Studies at Cato. The move reads, in Collins’s terms, as the creation of a base outside the university, funded by the patronage that sustains the libertarian network, and stocked deliberately with the carriers a position needs to spread: not other philosophers alone but judges, litigators, and policy experts who could move the argument from the page into the courts. A philosopher who recruits litigators has understood something Collins makes explicit. Ideas travel through their carriers.
The base needs its rituals, and here too the life cooperates. Collins draws his account of emotional energy from the study of interaction rituals, the focused gatherings that generate solidarity and recharge the confidence of the men inside them. Pilon ran conferences, testified before Congress, and built relationships across the field, and in 2001 he founded the Cato Supreme Court Review, an annual study of the Court from the libertarian vantage. An annual review is a ritual in Collins’s sense. It assembles the network on a fixed cycle, focuses its attention on a shared object, and sends its members back to their work charged with the sense that they belong to a project larger than any one of them. The Review did for Pilon’s circle what the seminar and the academy did for the chains Collins traced across history. It manufactured the solidarity that keeps a position alive between generations.
The judicial engagement idea rose, Collins’s account suggests, less because the argument compelled assent than because Pilon occupied a slot, built a base, ran the rituals, and recruited the carriers who could push the position into the institutions that decide cases. The merits of the natural-rights argument sit outside the frame. Collins brackets the question of whether a thinker is correct and asks instead how his position captured and held a share of the attention space. By that measure Pilon succeeded through the same route Collins found everywhere: descent from an eminent chain, a defining rivalry, a self-built base, a patron, and a ritual that renewed the whole arrangement on schedule.
Pilon presents himself as a man who reasons rights from human nature and follows the argument where it leads, and the natural-rights tradition trains its defenders to tell the story that way, as conviction against power. Collins relocates the story in the network. The conviction is real and the frame does not deny it. The frame holds that conviction alone never built an attention space, and that the rise of judicial engagement runs through Chicago, through Cato, through the Review, and through the litigators who carried it, more than through the force of any single proof.
What the frame leaves out is the content of the rights themselves and the question of whether the Privileges or Immunities argument or the reading of The Slaughter-House Cases states something true about the constitutional order. Collins does not arbitrate that. He maps the network that carried the claim into the room where it could be heard. Pilon’s life supplies what the theory asks for, and the theory returns a Pilon who looks less like a philosopher alone with a principle and more like a node that found its slot, built its base, and held its share of the attention space for forty years.
The Great Delusion
In his 2018 book, The Great Delusion: Liberal Dreams and International Realities, John J. Mearsheimer wrote:
My view is that we are profoundly social beings from the start to the finish of our lives and that individualism is of secondary importance… Liberalism downplays the social nature of human beings to the point of almost ignoring it, instead treating people largely as atomistic actors… Political liberalism… is an ideology that is individualistic at its core and assigns great importance to the concept of inalienable rights. This concern for rights is the basis of its universalism—everyone on the planet has the same inherent set of rights—and this is what motivates liberal states to pursue ambitious foreign policies. The public and scholarly discourse about liberalism since World War II has placed enormous emphasis on what are commonly called human rights. This is true all around the world, not just in the West. “Human rights,” Samuel Moyn notes, “have come to define the most elevated aspirations of both social movements and political entities—state and interstate. They evoke hope and provoke action.”
[Humans] do not operate as lone wolves but are born into social groups or societies that shape their identities well before they can assert their individualism. Moreover, individuals usually develop strong attachments to their group and are sometimes willing to make great sacrifices for their fellow members. Humans are often said to be tribal at their core. The main reason for our social nature is that the best way for a person to survive is to be embedded in a society and to cooperate with fellow members rather than act alone… Despite its elevated ranking, reason is the least important of the three ways we determine our preferences. It certainly is less important than socialization. The main reason socialization matters so much is that humans have a long childhood in which they are protected and nurtured by their families and the surrounding society, and meanwhile exposed to intense socialization. At the same time, they are only beginning to develop their critical faculties, so they are not equipped to think for themselves. By the time an individual reaches the point where his reasoning skills are well developed, his family and society have already imposed an enormous value infusion on him. Moreover, that individual is born with innate sentiments that also strongly influence how he thinks about the world around him. All of this means that people have limited choice in formulating a moral code, because so much of their thinking about right and wrong comes from inborn attitudes and socialization.
Pilon grounds rights in man’s nature as a rational and purposive agent. Rights precede government. They reach all men through reason, whatever the creed or culture a man happens to inherit, and Pilon takes care to ground them in reason rather than theology so that the claim might hold for everyone and not for believers alone. The rights-bearing individual stands first, the group and the government after, and property guards the independence that lets the individual stand at all. The architecture rests on three loads: the individual is prior, reason is the faculty that finds his rights, and the rights so found hold for every man.
Mearsheimer pulls each load.
He pulls the faculty first. Pilon rests the whole structure on reason, and Mearsheimer ranks reason the weakest of the three sources and the last to arrive. The faculty Pilon makes foundational shows up after a man’s society has already stocked him with a code, which means the rights Pilon says any man can reason toward are, on Mearsheimer’s account, reached by almost no man through reason, because reason is not the place moral codes come from. Pilon’s foundation turns out to be the part of the human equipment that does the least work.
He pulls the unit next. Pilon’s individual holds rights before any government and, in the logic of the argument, before any group. Mearsheimer’s individual is born into a society that forms him before he can assert a self, and develops attachments to that society strong enough to die for. The atomistic rights-bearer, the self who owns himself prior to the social world, is the figure Mearsheimer says liberalism invents and then mistakes for something it found in nature. Liberty rights that guard the self against coercion and property that secures the self’s independence both presuppose a self standing apart from the group. Mearsheimer denies there is one.
He pulls the reach last, and this pull does the most damage to the thing Pilon cares about. Pilon left theology for reason to win the universal, rights for all men whatever they believe. Mearsheimer answers that moral codes come from socialization and inborn sentiment, both of them local, both varying from group to group, so the universal Pilon reaches for through reason collapses back into the particular code of one society. The flight from creed lands in another creed wearing different clothes.
What then for Pilon, if Mearsheimer is right?
His universalism reads as parochialism in disguise. The natural rights he calls human nature become the moral inheritance of a particular people, Lockean, Enlightenment, American, dressed up as the structure of all human nature and offered to the species. Mearsheimer ties this move to foreign policy, to the liberal state that goes abroad to spread rights it takes for universal. Pilon keeps his work at home, on the Constitution and the courts, yet the intellectual move underneath is the one Mearsheimer names: take the code of your own society, run it through reason, and present the output as a discovery about man as such.
Something of Pilon survives the demolition, though not the part he would defend hardest. Mearsheimer grants that liberalism works inside a nation-state, nested within a bounded group held together by the stronger force of nationalism. Pilon’s constitutional project can survive on those terms, re-described as the defense of one nation’s inherited settlement rather than the application of universal reason. The American order is a particular people’s achievement, and a man who guards it guards his tribe’s arrangement. That is the last name Pilon claims for what he does. Mearsheimer hands it to him anyway.
The stress test owes Pilon a fair limit, and here it is. Mearsheimer’s anthropology describes how men come to believe what they believe. Pilon’s claim is normative, that rights exist however a man arrives at the sight of them. A story about how a belief forms does not settle whether the belief is true. Mathematics also arrives after the value infusion, and its lateness says nothing about whether its theorems hold. Pilon can answer, then, that Mearsheimer has explained why few men reason their way to natural rights without showing that natural rights are not there to be reasoned toward. To explain the rarity of a belief is not to refute it.
The standoff costs Pilon more than it costs Mearsheimer. Mearsheimer dissolves the social plausibility of the universal claim and leaves Pilon a foundation that almost no man reaches through the faculty Pilon says delivers it, defended by a tradition that looks, from the outside, like one tribe’s code raised to the dignity of human nature. Pilon keeps the bare possibility that the rights are real and waiting. Whether a moral foundation that nearly no one reaches by reason can still serve as the foundation it claims to be is the question Mearsheimer forces and Pilon cannot walk around. The rationalist grounding that was supposed to open natural rights to every man becomes, if Mearsheimer is right, the narrowest beam in the house.
