The Great Political Traditions, in Their Own Words: Liberalism, Conservatism, Socialism and More

Follows: The Political Spectrum, Fairly Presented

In this deep dive
1. What a political tradition is
2. Classical liberalism: freedom, markets and limited power
3. Social liberalism: freedom that people can actually use
4. Conservatism: the wisdom of what already works
5. Socialism, democratic socialism and social democracy
6. Libertarianism: the self-owner and the minimal state
7. Three more: Christian democracy, green thought and nationalism
8. The traditions side by side

The Political Spectrum, Fairly Presented set out the recurring tensions in politics: government or market, tradition or change, more state authority or less. It gave each side of each tension its strongest case. This piece goes a level deeper and looks at the traditions themselves, the long conversations in which people worked those positions out. For each one you will find its founders, its core claims, its internal splits and some of its best modern defenders, written as far as possible in terms its own adherents would accept.

Two rules shape what follows. First, there are no current parties or politicians. Party names mean different things in different countries (in American politics today, "liberal" names a centre-left outlook quite unlike the free-market classical liberalism described below), and they change with every election. The traditions are more stable. Second, nothing here declares a winner. Each tradition has answered real questions well, and each has real blind spots that its rivals are quick to point out. Those criticisms appear too, labelled as what they are.

Part 1 — What a political tradition is

A political tradition is less a list of policies than a family argument across generations. Its members share a starting intuition about what matters most and what usually goes wrong, and then argue fiercely among themselves about what follows.

A tradition is less a set of answers than a shared question that its members never stop arguing about.

It helps to ask every tradition the same four questions:

Three answers to one upheaval

The three oldest traditions make most sense as answers to the same historical shock: the collapse of the old European order of kings, established churches and fixed ranks, followed by the industrial revolution.

• Liberalism answered absolutism. Its first enemy was the unaccountable king and the persecuting church, and its first demands were rights, toleration and government by consent.
• Conservatism answered revolution. Its first enemy was the attempt to remake society all at once according to a theory, and its first demand was continuity.
• Socialism answered industrial capitalism. Its first enemy was the factory owner's power over workers who owned nothing but their labour, and its first demand was that working people share in the wealth they produced and in decisions about it.

Each of the later traditions in this piece can be read the same way. Christian democracy answered both unbridled markets and the all-powerful state. Green thought answered industrial growth's damage to the natural world, and nationalism answered empire and foreign rule. None of these origins fixes what a tradition means today, but they explain the instincts each one still carries.

A few cautions before the tour.

Traditions overlap and borrow. Conservatives defend markets that liberals theorised. Social democrats run market economies. Liberals adopted the welfare state that socialists campaigned for. Many real people are hybrids, and a good number of the thinkers below are claimed by two traditions at once.

Labels drift. "Liberal", "conservative" and "libertarian" have each meant different things in different centuries and countries. The Stanford Encyclopedia of Philosophy notes that "libertarian" was first used politically in 19th-century France for communist anarchists, and that its present free-market meaning only took hold in the mid-20th century.

These are mostly modern and Western. The Stanford Encyclopedia, quoting the philosopher John Gray, observes that conservatism, liberalism and socialism "crystallised into definite traditions of thought and practice only [after] the French Revolution". Other civilisations have their own long political traditions, among them Confucian, Islamic and Indian. Those deserve their own treatment and are not squeezed into these categories here. What follows are the families that now organise politics in most of the world's democracies.

What this piece leaves out

Several important strands of thought cut across the families covered here instead of forming one of them. Republicanism in the modern sense developed by the historian Quentin Skinner and the philosopher Philip Pettit treats freedom as non-domination, meaning independence from anyone's arbitrary power, even a kindly master's. Feminism, communitarianism and anarchism each have liberal, socialist and other wings. The previous deep dive covered the anarchist and feminist challenges to the social contract. Each of these strands deserves a piece of its own.

Part 2 — Classical liberalism: freedom, markets and limited power

The core intuition: individuals are free and equal, and power over them, whether held by kings, churches or majorities, has to justify itself.

Founders

Liberalism's roots lie in John Locke's natural rights and government by consent (the subject of the previous deep dive), in the fight for religious toleration after Europe's wars of religion, and in the Scottish Enlightenment. Adam Smith's The Wealth of Nations (1776) supplied the economics. Its most famous line is about how ordinary self-interest, channelled through exchange, feeds everyone:

"It is not from the benevolence of the butcher, the brewer, or the baker that we expect our dinner, but from their regard to their own interest." — Adam Smith, The Wealth of Nations, Book I, ch. 2

Smith's "invisible hand" appears only once in the book (Book IV, ch. 2). It describes a merchant who intends only his own gain and is "led by an invisible hand to promote an end which was no part of his intention." Smith was also a sharp critic of businessmen who, when they meet, end "in a conspiracy against the public." Reading him as a cheerleader for greed misses a great deal.

John Stuart Mill's On Liberty (1859) gave liberalism its most-cited principle:

"the only purpose for which power can be rightfully exercised over any member of a civilised community, against his will, is to prevent harm to others. His own good, either physical or moral, is not a sufficient warrant." — Mill, On Liberty, ch. 1

Mill's second chapter, on freedom of thought and discussion, is the classic liberal defence of free speech, and it rests on what silencing does to everyone else rather than on the speaker's rights:

"If all mankind minus one, were of one opinion, and only one person were of the contrary opinion, mankind would be no more justified in silencing that one person, than he, if he had the power, would be justified in silencing mankind." — Mill, On Liberty, ch. 2

If the silenced opinion is right, Mill argued, everyone loses the chance to exchange error for truth. If it is wrong, they lose "the clearer perception and livelier impression of truth, produced by its collision with error."

Core claims, in liberals' own terms

• Individual rights come first. Speech, conscience, religion, property and due process are protected even against majorities.
• Property and markets are part of freedom. In the Stanford Encyclopedia's summary, classical liberals hold that unless people "are free to make contracts and sell their labour, save and invest their incomes as they see fit, and free to launch enterprises," they "are not really free."
• Dispersed economic power protects political freedom. Friedrich Hayek put it bluntly: "There can be no freedom of press if the instruments of printing are under government control."
• Government should be limited, and limited by law. Constitutions, separated powers and the rule of law are liberal inventions as much as anyone's.

What liberals are proudest of

The liberal tradition's defenders point to religious toleration, freedom of the press, the abolition of hereditary privilege and, in the 19th century, campaigns against slavery and for free trade. The Stanford Encyclopedia stresses that "the broader classical liberal tradition was centrally concerned with bettering the lot of the working class, women, blacks, immigrants, and so on," and quotes Jeremy Bentham's aim: to make the poor richer, not the rich poorer.

The internal spectrum

Classical liberals are not one camp. At one end are views close to anarchism, with the state little more than a protection agency. Further along are those who accept public education, public infrastructure and even "a modest social minimum" (Hayek himself accepted one). Most 19th-century classical liberal economists, the Encyclopedia notes, supported a range of regulation, from health and safety rules to banking law.

Modern defenders: Friedrich Hayek (The Road to Serfdom, 1944; The Constitution of Liberty, 1960), Milton Friedman, and contemporary philosophers such as Gerald Gaus.

The rivals' main charge: formal freedom is not much use to people with no money, no time and no bargaining power. Liberalism's own second branch took that objection seriously.

Part 3 — Social liberalism: freedom that people can actually use

The core intuition: liberty matters most, and that is exactly why poverty, ignorance and insecurity are problems for a liberal.

The turn

By the late 19th century a group of British thinkers, sometimes called the "new liberals", argued that the old creed was incomplete. The philosopher T. H. Green held that freedom was more than being left alone. A person in the grip of a craving they cannot control is, in his words, "in the condition of a bondsman who is carrying out the will of another, not his own." Freedom, on this view, means being genuinely able to direct your own life, and some of the conditions for that can be supplied collectively.

L. T. Hobhouse's Liberalism (1911) gave the new view a slogan:

"Liberty without equality is a name of noble sound and squalid result." — L. T. Hobhouse, Liberalism

The Stanford Encyclopedia traces three causes of the shift. The first was doubt that unregulated markets were stable; John Maynard Keynes argued in 1936 that an economy could get stuck with high unemployment. The second was new confidence in government, now that elections made it answerable to the people, and the third was the growing conviction that unequal property could produce an unequal kind of liberty. Social liberals backed public education, social insurance, the regulation of working conditions and, in the 20th century, the welfare state.

Mill, the bridge

John Stuart Mill himself shows how blurry the line can be. The same author who wrote liberalism's charter for individual freedom described his own later view, in his Autobiography, as a "qualified socialism". According to the Stanford Encyclopedia, he argued for steep taxes on inheritance and unearned income, for firms owned and run by their workers, and for a "steady-state" economy rather than endless growth. Social liberals see him as their founder, classical liberals claim his defence of liberty, and some socialists and greens claim him too.

Two concepts of liberty

In his 1958 lecture "Two Concepts of Liberty", Isaiah Berlin made the distinction that still shapes this debate.

Berlin himself leaned to the negative side. He warned that positive liberty, inflated, had been used to justify tyranny "for your own good". Social liberals answer that you can want both kinds of freedom without sliding into tyranny, and that a free society is one in which people actually have choices.

The great modern restatement

John Rawls's A Theory of Justice (1971) is the most influential defence of social liberalism. It joins equal basic liberties for all with a principle that inequalities must benefit the least advantaged (see the previous deep dive).

Modern defenders: John Rawls, Ronald Dworkin, and philosophers in the "capabilities" tradition such as Martha Nussbaum and Amartya Sen, who ask what people are actually able to be and do.

The split within liberalism, stated by each side:
- Classical liberals: "Once government starts redistributing in the name of freedom, there is no natural stopping point, and the knowledge needed to plan an economy simply doesn't exist in any central office." (This is Hayek's argument.)
- Social liberals: "A freedom that only the comfortable can use is a privilege. Liberalism without a social floor betrays its own promise."

Part 4 — Conservatism: the wisdom of what already works

The core intuition: societies are complicated living things, and the accumulated experience stored in their institutions is usually wiser than any single generation's theories.

Founder: Edmund Burke

Conservatism as a self-conscious tradition began with the Anglo-Irish statesman Edmund Burke's Reflections on the Revolution in France (1790). Burke was no defender of every existing power. He had urged conciliation with the rebelling American colonies and campaigned against abuses of British rule in India. What alarmed him about the French Revolution was its method: tearing down a whole society's institutions in the name of abstract reason and rebuilding from a blueprint.

Three of his ideas define the tradition:

• Society as a partnership across time. Society is not a trading company "to be dissolved by the fancy of the parties", Burke wrote, but "a partnership not only between those who are living, but between those who are living, those who are dead, and those who are to be born."
• Little platoons. "To be attached to the subdivision, to love the little platoon we belong to in society, is the first principle (the germ, as it were) of public affections." Love of country and of humanity is learned through family, parish and neighbourhood.
• Reform to conserve. "A state without the means of some change is without the means of its conservation." Burke was not against change. He was against change made by theory rather than by experience.

Burke also defended what he called "prejudice": inherited habits of judgement that carry wisdom people cannot always put into words. Instead of casting it away, he argued, the wise look for "the latent wisdom which prevails in them."

Later forms

• Michael Oakeshott described the conservative disposition as a preference for the familiar over the unknown, the tried over the untried and the actual over the possible. He was suspicious of rulers who demand extraordinary powers for great projects justified by large abstractions. For Oakeshott this was a temperament rather than a doctrine.
• "One Nation" conservatism. The 19th-century British prime minister Benjamin Disraeli worried in his 1845 novel Sybil about "two nations" of rich and poor, "as ignorant of each other's habits, thoughts and feelings, as if they were dwellers in different zones." He widened the vote in 1867 and passed laws on public health and factory conditions. This paternalist strand holds that the comfortable owe duties to the poor and that social cohesion is a conservative value.
• Traditionalist and religious conservatism (the American writer Russell Kirk, the British philosopher Roger Scruton) emphasises moral order, religion, home and the inherited culture of a place.

Core claims, in conservatives' own terms

• Human reason is limited. No one can design a society from scratch, and attempts to do so tend to end badly.
• Institutions carry knowledge. Families, churches, local communities, common law and customs store the trial and error of generations.
• Imperfection is permanent. Conservatives are, in the Stanford Encyclopedia's term, "anti-utopian". Politics should aim to manage problems, since it cannot abolish them.
• Gradual change beats rupture. Reform should fix specific failures and leave the whole intact.

The Encyclopedia stresses that conservatism is not the same as reaction. Reactionaries such as the French writer Joseph de Maistre wanted to restore a lost order, while conservatives in Burke's line see tradition as "in a gentle and gradual flux".

The big internal split

Modern conservatives are divided over markets. One wing embraced free markets, partly on conservative grounds. Hayek admired spontaneous, unplanned order, although he wrote an essay in 1960 titled "Why I Am Not a Conservative". The other wing worries that markets dissolve the very things conservatives cherish. The philosopher John Gray put the worry sharply: a tradition once "sceptical of the project of the Enlightenment and suspicious of the promise of progress has mortgaged its future on a wager on indefinite economic growth and unfettered market forces."

The rivals' main charge: "tradition" has often meant defending whoever was already on top. Conservatives answer that the same caution protects ordinary people's ways of life from planners and theorists. They also point out that the institutions they defend, such as families, congregations and neighbourhoods, belong to everyone.

Part 5 — Socialism, democratic socialism and social democracy

The core intuition: a society in which a few own the means of production and the many must sell their labour to live is neither free nor fair, and working people acting together can change that.

Definitions first

The Stanford Encyclopedia defines socialism, at a minimum, as a society in which "the bulk of the means of production is under social, democratic control." That definition leaves a great deal open, including how much room is left for markets, whether control is exercised by the state or by workers and communities, and how society should get there. It also stresses that socialism is not the same as state ownership, and is "arguably in conflict with" mere statism. A state that controls the economy without being controlled by the people does not count.

Founders

Karl Marx and Friedrich Engels's Communist Manifesto (1848) gave socialism its most famous analysis of class conflict and capitalism's instability. The tradition then split over a question that still divides it: reform or revolution? In the 20th century, the revolutionary branch produced one-party states that called themselves socialist, and democratic socialists have been among their sharpest critics.

The democratic road

The German social democrat Eduard Bernstein argued in Evolutionary Socialism (1899) that capitalism was not about to collapse, and that socialists should win reforms through elections, unions and cooperatives. He wrote that "the movement means everything for me and that what is usually called 'the final aim of socialism' is nothing." For Bernstein, democracy was not a tactic:

"democracy is a condition of socialism to a much greater degree than is usually assumed, i.e., it is not only the means but also the substance." — Eduard Bernstein, Evolutionary Socialism

In Britain, the Fabian Society (founded 1884) championed gradual, evidence-driven reform. The historian R. H. Tawney defined freedom as "the ability to act", and so argued that real freedom required greater equality. After 1945, Anthony Crosland's The Future of Socialism (1956) became a landmark statement of this reforming tradition in Britain.

Democratic socialism and social democracy

The two terms are often used interchangeably. Many writers draw a rough line between them:

Core claims, in socialists' own terms

• Exploitation is structural. The problem is a system in which those who own capital have power over those who work, and individual bad employers are a symptom of that.
• Democracy should reach the economy. Citizens vote on their government, so why not on decisions that shape their working lives?
• Solidarity is a value, and so is need. The philosopher G. A. Cohen's Why Not Socialism? (2009) imagined a camping trip on which friends share equipment and labour as a matter of course. Most of us would find it strange, he pointed out, to run that trip on market principles.

Modern defenders: G. A. Cohen, the sociologist Erik Olin Wright (Envisioning Real Utopias, 2010), and the economist John Roemer, who designed models of market socialism.

Internal splits: reform versus transformation; state ownership versus cooperatives and workers' control; and markets versus planning. The Stanford Encyclopedia notes that many socialists today accept markets and argue mainly about who owns and governs firms.

The rivals' main charge: planned economies have lacked the information and incentives to work, and concentrating economic power in the state has repeatedly ended in tyranny. Democratic socialists reply that they reject exactly those regimes, and that social democracies with mixed economies have produced some of the most prosperous and free societies on record. Liberals and conservatives often reply in turn that those societies remain, at bottom, market economies.

Part 6 — Libertarianism: the self-owner and the minimal state

The core intuition: you own yourself, and no one, including a majority or a government, may use you as a means to their ends without your consent.

The Stanford Encyclopedia's definition is crisp. Libertarians "take individual freedom as the paramount political value and understand coercion to be the antithesis of that freedom." People can be forced to refrain from violating others' liberty, "they cannot be coerced to serve the good of other members of society, nor even their own personal good."

Founders and lineage

Libertarianism draws on Locke's rights, Smith's economics and a radical individualist strand of 19th-century thought, including Lysander Spooner, who appeared in the previous deep dive. As a self-conscious movement it took shape after the Second World War, as people who called themselves classical liberals or libertarians resisted the growth of state economic planning. The economist Murray Rothbard was its leading American voice. Robert Nozick brought it into academic philosophy with Anarchy, State, and Utopia (1974).

Nozick's two famous arguments

1. Taxation and forced labour. Nozick argued that taxing the earnings of labour for redistribution is "on a par with forced labor": it takes a portion of your working hours for others' purposes.
2. Wilt Chamberlain. Start with whatever distribution of wealth you consider just. Now suppose a million fans each freely pay a star basketball player 25 cents to watch him play. He ends up far richer than anyone else. Every step was voluntary, so how can the result be unjust? Nozick's conclusion is that "liberty upsets patterns": any fixed pattern of distribution can be maintained only by constantly interfering in people's free choices.

Core claims, in libertarians' own terms

• Self-ownership. Each person has strong rights over their own body, labour and the fruits of their labour.
• The minimal state. For Nozick only a state limited to protecting people against force, theft and fraud, and enforcing contracts, is justified.
• Social freedom as well as economic freedom. The Stanford Encyclopedia stresses that libertarianism is not simply "right-wing". On social questions it tends to back radical freedom of association, expression and lifestyle. On foreign policy it often opposes war and border restrictions.

Two deeper ideas

The moral parity thesis. Many libertarians hold that people acting for the state have exactly the same rights and duties as private citizens. If it would be wrong for your neighbour to take your money by force to fund a project he believes in, it does not become right because an official does it. Only consent, on this view, can make permissible what would otherwise violate someone's rights. Libertarians argue that treating public action as morally special cannot be squared with natural equality.

Self-ownership cuts both ways. The most important critic of Nozick, the socialist philosopher G. A. Cohen, took self-ownership seriously, and he argued that the idea explains what is wrong with capitalism. If workers own themselves and their labour, then a system in which owners of capital take part of what workers produce looks like expropriation. The Stanford Encyclopedia notes that for decades the philosophical debate about libertarianism turned on this disagreement over a single shared premise.

Internal splits

• Minimal state versus no state. Nozick defended a minimal state; anarcho-capitalists in Rothbard's line argue that even protection could be supplied by competing private agencies.
• Right versus left libertarianism. Both accept self-ownership. "Left-libertarians" such as Hillel Steiner and Peter Vallentyne argue that natural resources (land, minerals, the air) belong to everyone in some equal way, so those who claim them owe compensation to others. That can support substantial redistribution.
• Rights versus consequences. Some libertarians argue from natural rights, while others, in the classical liberal tradition of Hayek and Friedman, argue that freedom simply produces better results.

The rivals' main charge: self-ownership taken to its conclusion leaves the unlucky, the disabled and the poor at the mercy of charity, and real markets carry power imbalances that the theory ignores. Libertarians reply that voluntary cooperation and economic growth have done more for the poor than coercion has, and that a right not to be coerced is not a luxury.

Part 7 — Three more: Christian democracy, green thought and nationalism

Christian democracy

The core intuition: the human person, created with dignity, lives within families and communities, and the state should serve those communities without swallowing them.

Its roots are in Catholic social teaching. Pope Leo XIII's encyclical Rerum Novarum (1891) rejected socialism's abolition of private property, but also held that "wages ought not to be insufficient to support a frugal and well-behaved wage-earner", and backed workers' associations. Pius XI's Quadragesimo Anno (1931) formulated the principle of subsidiarity:

"it is an injustice and at the same time a grave evil and disturbance of right order to assign to a greater and higher association what lesser and subordinate organizations can do." — Quadragesimo Anno, §79

A Protestant parallel, the Dutch theologian and politician Abraham Kuyper's "sphere sovereignty", held that institutions such as the family, the church and the school have their own spheres of authority, which the state must respect. After 1945, Christian democratic parties became, in one historian's words, "the most successful political force in much of Western Europe during most of the twentieth century." Their economic model was often the social market economy of post-war West Germany: well-functioning, competitive markets, guided by an "economic constitution" that the state provides, in the name of a society both free and socially just.

Its distinctiveness: Christian democracy fits neither left nor right neatly. It is socially conservative on family and morality, generally supportive of the welfare state (though attitudes varied a good deal from country to country), and committed to decentralisation through subsidiarity. Critics from secular liberalism question building politics on religious teaching. Critics on the left and right see it as a compromise without a core, while its defenders call that balance its strength.

Green political thought

The core intuition: human societies depend on natural systems that have limits, and politics that ignores those limits will eventually fail on its own terms.

Modern green thought took shape in the 1960s and 1970s. In 1972 an MIT team led by Donella Meadows published The Limits to Growth, calling for "a basic change of values and goals at individual, national and world levels." In 1973 the Norwegian philosopher Arne Næss distinguished "shallow" ecology, the fight against pollution for the sake of people in rich countries, from "deep" ecology, which holds that all living things have value in their own right. The American Murray Bookchin's "social ecology" argued that environmental problems are at root social problems of hierarchy and domination.

The political theorist Andrew Dobson drew a useful line between environmentalism, which seeks greener policies within existing politics, and ecologism, a full ideology that questions growth itself. When green parties emerged in Europe in the 1980s, they quickly split along roughly that line into "realists" and "fundamentalists". The 1987 UN Brundtland Report gave the mainstream its definition of sustainable development: development "that meets the needs of the present without compromising the ability of future generations to meet their own needs."

Core claims: obligations to future generations and possibly to non-human nature; scepticism about endless growth; decentralisation and grassroots democracy; and the view that social justice and ecology are linked. Internal debates: green growth versus degrowth, technology as solution versus technology as problem, and how much state power ecological goals justify. Critics argue that strict limits fall hardest on poorer countries still developing, and that innovation has repeatedly defeated predictions of scarcity. Greens answer that some limits, such as a stable climate, cannot be innovated around after the fact.

Nationalism

The core intuition: nations are real communities that give people identity and solidarity, and they have a rightful claim to govern themselves.

The political philosopher David Miller identifies three beliefs common to all nationalism: that nations are real and valuable, that members owe special duties to fellow nationals, and that nations have a claim to political self-determination, whether through their own state or another form of self-government. Ernest Renan's 1882 lecture "What Is a Nation?" gave the most famous answer to the obvious question. A nation is a shared legacy of memories plus "present consent, the desire to live together"; its existence is "an everyday plebiscite."

Nationalism is less a single tradition than a principle that attaches itself to others. There are liberal, conservative, socialist and religious nationalisms. Its history runs from the 19th-century unifications of Germany and Italy to the anti-colonial movements of the 20th century, whose claim to self-determination is written into the UN Charter. Its founding figures are disputed. The German philosopher Johann Gottfried Herder is often called the father of cultural nationalism, but the Stanford Encyclopedia argues that this is "deeply misleading": he was a cosmopolitan who valued every people's language and culture equally and denounced colonialism.

Its best modern defenders are the liberal nationalists, among them Yael Tamir, Will Kymlicka and David Miller. They argue that a shared national identity is what makes citizens willing to trust one another, accept election results and pay for each other's welfare. John Stuart Mill made an early version of the argument in 1861: "Free institutions are next to impossible in a country made up of different nationalities." Conservative nationalists, Roger Scruton among them, treat the inherited identity as more authoritative.

Internal debate: "civic" nationalism (loyalty to shared political principles) versus "ethnic" nationalism (shared descent and culture). Liberal nationalists such as Bernard Yack argue that no real nation is purely civic, because "real nations, in contrast, combine choice and cultural heritage." Critics, especially cosmopolitans, argue that national partiality is morally arbitrary, that national identities are often invented to secure loyalty, and that nationalism's record includes some of history's worst wars and persecutions. The Stanford Encyclopedia notes that the evidence on whether national identity really increases trust and support for redistribution "is mixed".

Part 8 — The traditions side by side

The table compresses each tradition into a few phrases. Every cell simplifies, and members of each tradition argue about every one.

How they argue with each other

Read the table across and you can see that each tradition's "main danger" is often another tradition's "main good". To a libertarian, the state that a social democrat relies on to deliver solidarity is the coercive state. A conservative sees the liberal's autonomous individual as a person cut off from the little platoons. To socialists, the conservative's inherited order looks like inherited privilege. Greens treat the growth that liberals and social democrats count on as the problem. And the nationalist's community is, for the cosmopolitan liberal, an arbitrary line on a map.

Most political arguments are not between people who value freedom and people who don't. They are between people who fear different threats to it.

How they borrow

They also borrow constantly. Conservatives defend free markets that liberals theorised. Social democrats run market economies that liberals built. Liberal welfare states rest on demands that socialists and Christian democrats made. Greens draw on the conservative instinct to conserve and on the socialist critique of growth-driven capitalism. Even libertarians and anarchists, far apart on property, share a suspicion of concentrated power.

Steelmanning across the lines

The Political Spectrum, Fairly Presented ended with the case for steelmanning, building the strongest version of a view before answering it. The traditions make that easier, because each one comes with founders who stated it at full strength. You will learn more from reading the best defender of a view you reject than from a hundred summaries by its opponents. Burke on the French Revolution, Mill on liberty, Bernstein on democracy, Nozick on Wilt Chamberlain: each of these is short, and each was written to persuade intelligent sceptics.

The takeaway

The major political traditions are long arguments with founders, core claims and internal splits. Classical liberals put individual liberty, property and limited, law-bound government first. Social liberals argue that liberty needs a social floor to be real. Conservatives in Burke's line trust inherited institutions over abstract theory and prefer careful reform. Socialists want democratic control of economic life, while social democrats keep markets but tame them. Libertarians build on self-ownership and the minimal state. Christian democrats pair human dignity with subsidiarity, greens put ecological limits and future generations at the centre, and nationalists defend peoples' right to govern themselves. Each tradition names a danger that its rivals underrate, and each is vulnerable to a criticism its rivals are right to press.

Try this: pick the tradition in the table you feel least sympathy for, and read 20 pages by its founder or best modern defender. All the books below are free or easy to find. Then write two sentences stating its case so well that one of its adherents would nod. If you can do that, you understand your own position better too.

Sources & Further Reading

Sources
- Stanford Encyclopedia of Philosophy entries: "Liberalism" (classical vs new liberalism; Hayek, Green, Tawney, Keynes, Bentham; positive and negative liberty), "Conservatism" (Burke, Oakeshott, Disraeli and Sybil, Kirk, Scruton, Gray; conservatism vs reaction), "Edmund Burke", "Isaiah Berlin" (1958 lecture), "Socialism" (definition; market socialism; Cohen, Wright, Roemer), "Libertarianism" (definition; history of the term; left- and right-libertarianism; Rothbard), "Robert Nozick's Political Philosophy" (forced labour; Wilt Chamberlain), "Nationalism" (Miller's three beliefs; Renan; liberal and conservative nationalism; civic vs ethnic; evidence on trust "mixed"), "Johann Gottfried von Herder" (Herder's cosmopolitanism), "Environmental Ethics" (Limits to Growth, Næss, Bookchin, Dobson, realists and fundamentalists, Brundtland definition).
- Primary texts (Project Gutenberg unless noted): Adam Smith, The Wealth of Nations (1776), Book I ch. 2 and Book IV ch. 2; J. S. Mill, On Liberty (1859), ch. 1, and Considerations on Representative Government (1861), ch. 16; L. T. Hobhouse, Liberalism (1911); Edmund Burke, Reflections on the Revolution in France (1790), Works vol. 3; Eduard Bernstein, Evolutionary Socialism (1899; Marxists Internet Archive); Fabian Essays in Socialism (1889; Society founded 1884).
- Leo XIII, Rerum Novarum (1891), §45; Pius XI, Quadragesimo Anno (1931), §79 (vatican.va).
- Christian democracy as "the most successful political force in much of Western Europe during most of the twentieth century": Oude Nijhuis, Journal of Policy History (2023). Social market economy: Goldschmidt, "Alfred Müller-Armack and Ludwig Erhard: Social Market Liberalism" (2004). Kuyper's sphere sovereignty: Kristanto & Salurante, Verbum et Ecclesia (2023).
- Andrew Dobson, Green Political Thought (Routledge, 4th ed. 2007); C. A. R. Crosland, The Future of Socialism (1956); UN Charter Art. 1(2) (self-determination of peoples).

Go deeper
- 🌐 Stanford Encyclopedia of Philosophy: Liberalism (then follow its links to Conservatism, Socialism and Libertarianism; all written by specialists, free and fair-minded)
- 📘 On Liberty, John Stuart Mill (the founding liberal text and still the best short argument for free speech)
- 📘 Reflections on the Revolution in France, Edmund Burke (in Burke's collected Works, vol. 3; the founding conservative text, long but quotable on every page)
- 🌐 Evolutionary Socialism, Eduard Bernstein (how socialism chose the democratic road, argued from inside the movement)
- 📘 Anarchy, State, and Utopia, Robert Nozick (the libertarian classic; read Part II, chapter 7, with the Wilt Chamberlain argument)
- 📘 Why Not Socialism?, G. A. Cohen (under 100 pages; the camping-trip argument at its most disarming)
- 📘 Green Political Thought, Andrew Dobson (the standard map of ecologism and how it differs from mainstream environmentalism)
- 🌐 Companion pieces in this library: The Political Spectrum, Fairly Presented and The Social Contract: Why Obey a State at All?