Socialism: The Many Kinds, From Utopians to Social Democracy

Follows: The Political Spectrum, Fairly Presented and Capitalism: How Markets, Prices and Private Property Organise an Economy

In this deep dive
1. What socialism is, and why there are so many kinds
2. The utopians: Saint-Simon, Fourier and Owen
3. Marx and Engels's economics, fairly presented
4. What Marx's critics said, and what survives
5. Revolution or reform: Bernstein, Luxemburg, the Fabians and the great split
6. Socialism with markets: the calculation debate, market socialism and Mondragon
7. The Nordic model: is it socialism?
8. Weighing it up

In 1800 a Welsh businessman named Robert Owen took charge of a cotton mill at New Lanark, in Scotland. Over the next three decades, Friedrich Engels later wrote, he turned a demoralised workforce into a model community of 2,500 people, with infant schools and a working day of ten and a half hours when competitors worked their people thirteen or fourteen. And then Owen asked a question that would not leave him alone.

His 2,500 workers, he calculated, produced as much as a population of 600,000 could have produced half a century earlier. So where did the difference go? Engels quotes him asking exactly that: "what became of the difference between the wealth consumed by 2,500 persons and that which would have been consumed by 600,000?"

That question, about who gets the extra wealth machines create, is where socialism starts. The previous deep dive, on capitalism, set out the case for markets, prices and private property, and ended with its strongest critiques. This one follows the people who thought those critiques went to the root. It covers socialism as an economic system: who should own the means of production, how goods should be made and shared, and how it has been tried. The Great Political Traditions (Politics 15) treats socialism as a political family alongside liberalism and conservatism; this piece sticks to the economics. The Soviet and Chinese experience of state communism, and the anarchist tradition, have their own deep dives later in this series.

Part 1 — What socialism is, and why there are so many kinds

Socialists disagree about almost everything except a starting point. The Stanford Encyclopedia of Philosophy entry on socialism puts the common core like this: socialists object to a society divided between a class that owns the productive assets and so does not need to work for a living, and a class that must work for them. The remedy, in some form, is social ownership or control of the means of production, organised to meet needs and to give people an equal say in the economic decisions that shape their lives.

Notice how many questions that leaves open. Social ownership could mean the state, a town, the workers in each firm, or customers in a co-operative. Control could mean owning firms outright or just regulating, taxing and bargaining with private owners. The economy could be run by a plan or by markets. And the change could come through revolution or through elections. Different answers to those questions give you very different socialisms:

The labels are used loosely, and people inside each movement argue about them. But the table shows why the word "socialism" can make two people talk past each other. One means Denmark. The other means the Soviet Union. Neither is lying; they are describing different branches of the same tree. Part 5 explains why the line between democratic socialism and social democracy in particular is worth drawing carefully.

One more rule of fair comparison, which the Stanford Encyclopedia entry stresses and which both sides routinely break: compare like with like. It is unfair to set an ideal socialism against actually existing capitalism, with all its slums and crashes, and equally unfair to set ideal free markets against the worst actually existing socialist states. Ideal should be weighed against ideal, real against real, and, most usefully, the best feasible version of each against the other. This piece tries to keep to that rule: it sets out each branch's best design, then asks what happened when it met reality.

Most arguments about "socialism" are really arguments about which socialism, and both sides are often thinking of different countries.

Part 2 — The utopians: Saint-Simon, Fourier and Owen

The first socialists had no party and no theory of revolution. They had ideas for a better society and, in some cases, money to try them. Engels, in Socialism: Utopian and Scientific (1880), named "the three great Utopians", and though he meant the word as a put-down, he wrote about each of them with real admiration.

Henri de Saint-Simon (1760–1825): a society run by producers

A French aristocrat who lived through the Revolution, Saint-Simon divided society into "workers" and "idlers". The workers, for him, included bankers, factory owners and scientists along with labourers; the idlers were the nobles, the clergy and anyone who lived off rents without producing. He wanted society organised by science and industry, and he insisted, as Engels quotes him, that "all men ought to work". His first concern was "the class that is the most numerous and the most poor." His disciples, after his death, pushed his ideas further towards a planned economy and the abolition of inheritance. His real legacy is the idea that an industrial economy could be consciously organised rather than left to chance, which runs through both state planning and modern technocracy.

Charles Fourier (1772–1837): making work attractive

Fourier was the satirist of the group; Engels called him "one of the greatest satirists of all time". He mocked the hypocrisy of commercial civilisation and the misery of tedious work. His alternative was the phalanstère, a planned community in which people would rotate between jobs they enjoyed, following their natural passions, so that work became pleasure rather than drudgery. Fourierist colonies sprang up in the United States in the nineteenth century, including Brook Farm in Massachusetts; none lasted long. But his central question, why work has to be miserable, keeps returning in debates about automation and meaningful jobs.

Robert Owen (1771–1858): the model factory

Owen was the practical one. He made New Lanark profitable and humane, which convinced many visitors that the misery of early industry was a choice, not a necessity. Then he went further. In the 1820s he put most of his fortune into a co-operative community at New Harmony, Indiana. It was dissolved in 1827, and other Owenite colonies in Britain also failed within a few years. Owen lost his wealth, but not his influence: back in London he backed trade unions and co-operatives and set up a labour exchange in which goods were traded for "labour notes" measured in hours worked.

Why they mattered, and why they failed

The utopians invented much of socialism's vocabulary: the critique of idleness and waste, the dream of attractive work, the co-operative, the idea that economic life could be designed. The Communist Manifesto praised them for attacking "every principle of existing society" while dismissing their plans as fantasies.

Their communities failed for reasons that would haunt later socialism too. Small groups that had chosen to opt out of the wider economy still had to buy from it, sell to it and compete with it. Members disagreed about work and reward, and someone had to decide. Those are not proofs that socialism is impossible. They are the practical problems every later version had to solve.

Part 3 — Marx and Engels's economics, fairly presented

Karl Marx (1818–1883) and Friedrich Engels (1820–1895) wanted to replace dreams with science. Engels had already written The Condition of the Working Class in England (1845) from what he saw in Manchester. Together they published the Communist Manifesto in February 1848. Marx's life work was Capital, volume 1 of which appeared in 1867; Engels edited the later volumes from Marx's notes, volume 3 appearing in 1894.

Marx's economics is often caricatured, by friends and enemies alike. Here it is in its own terms, as fairly as it can be put in a few pages.

Step 1: value comes from labour

Marx took the labour theory of value from the classical economists, Smith and especially David Ricardo. In Capital (vol. 1, ch. 1) the value of a commodity is set by the "labour time socially necessary" to produce it: the time required "under the normal conditions of production, and with the average degree of skill and intensity prevalent at the time." Not your labour if you are slow, but the social average.

Step 2: labour-power is a commodity like any other

Here is Marx's key move. What the worker sells to the employer is not "labour" but labour-power, the capacity to work for a day. Like any commodity, its value is what it costs to produce: the food, shelter and clothing needed to keep a worker able to work and to raise the next generation.

Step 3: the gap is surplus value

In chapter 7 Marx works an example. Suppose the daily value of labour-power is three shillings, which is the value produced in six hours of work. The capitalist pays three shillings, a fair price. But he has bought a whole day's use of labour-power, and the worker works twelve hours. The second six hours create value the worker is not paid for: surplus value, the source of profit.

The striking thing is that, on Marx's account, no one has been cheated. The employer has paid the market rate. Marx says, with heavy irony, that this is "a piece of good luck for the buyer, but by no means an injury to the seller." Exploitation, for Marx, is not fraud or bad bosses. It is built into the wage relationship itself, because the worker, having no land or tools, has no choice but to sell labour-power to those who own them. In chapter 6 he mocks the marketplace where wages are agreed as a place where "alone rule Freedom, Equality, Property and Bentham": everything looks free and equal at the moment of exchange, and the inequality happens out of sight, in the workplace.

Marx calls the rate of surplus value "an exact expression for the degree of exploitation of labour-power by capital" (ch. 9). In his darkest image, "Capital is dead labour, that, vampire-like, only lives by sucking living labour" (ch. 10).

Step 4: why the system is unstable

From here Marx derives capitalism's tendencies to crisis:

• The reserve army. Machinery throws workers out of jobs, creating an "industrial reserve army" of the unemployed (vol. 1, ch. 25) that holds wages down.
• Overproduction. The Manifesto describes "the epidemic of over-production": crises in which society suffers not because there is too little but because "there is too much civilisation, too much means of subsistence, too much industry, too much commerce" for the system to sell profitably.
• The falling rate of profit. If only living labour creates surplus value, and competition pushes firms to replace workers with machines, then the profit rate across the economy tends to fall. Marx (vol. 3, ch. 13) presents this as "an expression peculiar to the capitalist mode of production of the progressive development of the social productivity of labour."

Put together, these tendencies were meant to show that capitalism would generate ever-sharper crises and an ever-larger, more organised working class, until workers took over the means of production.

Marx's charge was not that capitalism fails to produce wealth. It was that it produces wealth in a way that cannot last and cannot be fair.

It is worth stressing how much Marx admired what he attacked. The same Manifesto that calls for "Abolition of private property" says that under capitalism "All that is solid melts into air", and credits it with more productive power than all earlier generations together. His argument was about what came next.

Part 4 — What Marx's critics said, and what survives

Marx's economics drew powerful criticism almost at once, and the debate never stopped.

The marginal revolution

In 1871, working independently, William Stanley Jevons in Manchester and Carl Menger in Vienna (and, shortly afterwards, Léon Walras in Lausanne) developed a different theory of value. Value, they argued, depends on marginal utility: how much people want one more unit of something. Water is essential and cheap; diamonds are trivial and dear, because water is plentiful and diamonds scarce. On this view, labour does not create value; things have value because people want them, and the labour that goes into making them is valuable because the product is. Within a generation, mainstream economics had moved over to marginalism, and it has stayed there.

The transformation problem

In volume 1, Marx assumed goods sell at their labour values. But in real markets, profit rates tend to even out across industries, even though some industries use far more machinery per worker than others. If profit came only from living labour, machine-heavy industries should earn lower profit rates, and they don't. Marx addressed this in volume 3 by "transforming" values into prices of production. The Austrian economist Eugen von Böhm-Bawerk argued in Karl Marx and the Close of His System (1896) that the solution was a contradiction: if prices don't follow labour values, the labour theory explains nothing about actual prices. Arguments over whether the transformation can be made consistent have run for more than a century among Marxian economists.

The verdict of mainstream economics is blunt. Econlib's encyclopedia article on Marxism calls the labour theory of value "demonstrably false". Most economists agree.

What survives

Many sympathetic scholars accept much of that criticism, and still find a lot of Marx worth keeping. The Stanford Encyclopedia entry on Marx notes that "even if the labour theory of value is considered discredited, there are elements of his theory that remain of worth." Three stand out:

1. Exploitation without the labour theory. The philosopher Robert Nozick objected that if the labour theory falls, the theory of exploitation falls with it. The economist John Roemer tried to rebuild the idea on ownership instead: workers are exploited, on his account, if they are made worse off, through no fault of their own, by an unequal distribution of productive property, having to work longer for the same consumption than they would if capital were owned in common. Defenders of capitalism reply that owners contribute something real, notably risk-taking, and that the "surplus" is a fair payment for access to capital. As the Stanford Encyclopedia's entry on capitalism puts it, the argument then turns on whether the unequal distribution of property can itself be justified, which is a moral question, not an accounting one.
2. Conflict and instability. The Cambridge economist Joan Robinson, in An Essay on Marxian Economics (1942), singled out two lasting insights: Marx's refusal to assume a harmony of interests between workers and employers, and his denial that markets have a long-run tendency to settle into equilibrium, with his account of the boom-and-bust cycle. Few economists accept Marx's specific crisis theory, but the idea that market economies can generate booms, busts and long spells of unemployment from within is now widely accepted.
3. Power at work. The observation that formally free exchange can hide unequal power, the "Freedom, Equality, Property and Bentham" point, is still central to debates about wages, gig work and workplace democracy.

What did not happen matters as much. In the rich countries the working class did not become ever more miserable. Real wages rose, a large middle class grew, and workers won the vote, unions and welfare states. That fact gave rise to the biggest split in socialist history.

Part 5 — Revolution or reform: Bernstein, Luxemburg, the Fabians and the great split

At the end of the nineteenth century the official doctrine of the German Social Democratic Party (SPD), the flagship of the international movement, was Marxist: capitalism would sharpen into crisis and give way to socialism. One of the party's leading thinkers, Eduard Bernstein (1850–1932), had spent years in exile in London, close to Engels and in contact with the Fabians. He looked at the evidence and concluded that Marx had been wrong about the direction of history.

Bernstein: the movement is everything

In Evolutionary Socialism (1899; in German, Die Voraussetzungen des Sozialismus) Bernstein argued that capitalism was not heading for collapse. Crises were not getting worse; wealth was not concentrating as fast as Marx predicted; small firms were surviving; and workers were gaining through unions, co-operatives and the vote. He criticised the expectation, endorsed at an international socialist congress in 1896, that a great catastrophic crisis was imminent. Socialism should therefore be pursued through gradual, democratic reform. "Democracy," he wrote, "is a condition of socialism" to a much greater degree than usually assumed. And then the line that made him notorious:

"To me that which is generally called the ultimate aim of socialism is nothing, but the movement is everything." — Eduard Bernstein, Evolutionary Socialism, Conclusion

He meant that steady, practical improvements were what counted, and he said elsewhere, "Unable to believe in finalities at all, I cannot believe in a final aim of socialism."

Luxemburg: a different goal, not a slower road

The young Polish-German revolutionary Rosa Luxemburg replied in Reform or Revolution (1898–99). She did not oppose reforms; the question, she said, is whether reforms are a means to transforming society or the whole aim. People who choose legislative reform instead of the conquest of power "do not really choose a more tranquil, calmer and slower road to the same goal, but a different goal." Reform alone would leave the ownership of capital untouched, so capitalism's core would survive every improvement. On co-operatives she was sharper still: a producers' co-op inside a capitalist market is "a hybrid form", forced by competition to "govern themselves with the utmost absolutism", exploiting themselves as harshly as any boss would.

This argument has never been settled, and it still divides the left: does every reform bring socialism closer, or does it make capitalism more comfortable and so more permanent?

The Fabians: the British road

In Britain the reformist case came from a different direction. The Fabian Society, founded in London on 4 January 1884, took its name from the Roman general Quintus Fabius, famous for wearing down Hannibal by patient delay. Its members, including George Bernard Shaw and Sidney and Beatrice Webb, rejected violent revolution and set out to make socialism respectable through research and steady persuasion. The Fabian Essays of 1889 made their name. They founded the London School of Economics and helped found the Labour Party in 1900. When Labour won its 1945 landslide, 229 Fabian Society members were elected to Parliament, many of whom became ministers in Clement Attlee's government.

Labour's constitution made the commitment explicit. Clause IV, drafted by Sidney Webb and adopted in 1918, called for "the common ownership of the means of production"; the words "distribution and exchange" were added in 1929, giving the version most people remember. In 1995, under Tony Blair, the party replaced it with wording that dropped common ownership.

The great split, and why the labels matter

After the Russian Revolution of 1917, the socialist movement split for good. Communists followed Lenin into revolution and one-party rule; social democrats stayed with elections. Over the following decades, most social democratic parties gradually stopped aiming to replace capitalism at all. The SPD's Godesberg Programme of 1959, for example, dropped Marxism and summed up its economic policy as "as much competition as possible, as much planning as necessary."

That history explains a distinction that matters today:

Both are democratic. The difference is the destination. A social democrat wants a better capitalism; a democratic socialist wants, eventually, something that is no longer capitalism. The distinction matters because opponents often blur it for effect, and supporters sometimes blur it for comfort. Critics of social democracy say "this is socialism, and socialism ends in the Soviet Union"; defenders of democratic socialism say "we just want what Denmark has". Neither is quite accurate, and you can only see why with the distinction in hand.

A social democrat wants a better capitalism. A democratic socialist wants, eventually, something that is no longer capitalism.

Part 6 — Socialism with markets: the calculation debate, market socialism and Mondragon

If socialism means ending markets, it runs straight into the problem described in the capitalism deep dive: how can anyone run an economy without prices?

The calculation debate

The attack came from Vienna. In a 1920 article, Ludwig von Mises argued that without markets for the means of production there could be no meaningful prices for them, and so no rational way to calculate which projects were worth undertaking. Socialism, he said, was not just inefficient but impossible. Hayek developed the argument into his case about dispersed knowledge.

In 1936 and 1937 the Polish economist Oskar Lange replied in two articles that impressed many economists at the time. Planners, he argued, could imitate a market: set prices, watch for shortages and surpluses, and adjust by trial and error, as a market does. Robert Heilbroner, writing for Econlib, recalls that many believed the Mises–Hayek argument "had been demolished". Lange himself added a warning in italics: "The real danger of socialism is that of a bureaucratization of economic life."

Heilbroner's own verdict was that Mises and Hayek had been right, but partly for a reason Lange foresaw more clearly than they did. The problem with planned economies turned out to be less about information than about motivation: managers had little reason to act on the information they did have, to innovate, or to stop producing what nobody wanted. (The communism deep dive looks at how this played out in practice.)

Market socialism

Many socialists drew the lesson that the goal should be socialist ownership combined with market coordination. The Stanford Encyclopedia describes several serious designs:

• Economic democracy (David Schweickart): firms are run by their workers, who decide what to make and how to pay themselves; goods are sold in competitive markets; investment funds are allocated by democratically accountable public banks, funded by a tax on capital assets.
• Coupon socialism (John Roemer): every adult receives an equal allocation of special "coupons" that can be used only to buy shares in firms, not exchanged for cash. People earn dividends but cannot sell their stake for money or leave it to their children, so no separate class of capital owners emerges, while a stock market still disciplines managers.
• The Carens model (Joseph Carens): markets set pre-tax wages to signal where work is needed, but taxes equalise post-tax incomes, and people choose jobs partly out of a sense of social duty.

The encyclopedia also records the main objections, drawn from the economist Giacomo Corneo and others. Under worker self-management, workers doing identical jobs in different firms earn very different incomes depending on market luck; workers' savings and jobs are concentrated in one firm, which is risky; self-managed firms may hire too little when prices are high, because existing members don't want to share the profit; and the public investment banks would hold enormous power that might be hard to hold democratically accountable. The Carens model, critics say, asks a great deal of human motivation.

Co-operatives and Mondragon

Market socialism is mostly theory, but one form of it exists at scale today: the co-operative. The International Co-operative Alliance, founded in London in 1895, says there are about 3 million co-operatives in the world, that more than 12% of humanity belongs to one, and that they provide work for about 280 million people, around 10% of the world's employed population. The most famous worker co-operative network grew up in the Basque Country in Spain. In 1955 a Catholic priest, José María Arizmendiarrieta, encouraged a group of young people to leave the factories where they worked and start their own company on the principle of workers' democracy; on 14 April 1956 he blessed the foundation stone of ULGOR, the first of the co-operatives. Today the Mondragon Corporation describes itself as 81 self-governing co-operatives with around 70,000 people and 12 research centres, with 104 production plants in 37 countries. Members elect the governing bodies on a one-person-one-vote basis.

Mondragon is the strongest real-world evidence that worker ownership can compete in global markets for decades. It also illustrates the critics' points. When its appliance maker, Fagor Electrodomésticos, went into crisis, the group's own history records that in 2014 all the co-operatives worked to relocate the members affected: a real show of solidarity, and also a reminder of how concentrated a worker-owner's risk is when one firm holds both their job and their savings. Luxemburg's "hybrid form" is visible here: a democratic enterprise that must still survive, and can still fail, in a capitalist market.

Part 7 — The Nordic model: is it socialism?

When an American politician says "socialism", someone usually replies "you mean like Denmark?". In October 2015, after Denmark came up in a US presidential primary debate (Senator Bernie Sanders, who called himself a democratic socialist, consistently pointed to the Nordic countries as his model), Denmark's centre-right prime minister Lars Løkke Rasmussen gave a speech at Harvard's Kennedy School. "I know that some people in the US associate the Nordic model with some sort of socialism," he said. "Therefore I would like to make one thing clear. Denmark is far from a socialist planned economy. Denmark is a market economy."

He was not arguing that Denmark is small-government. The Nordic model, he said, is "an expanded welfare state which provides a high level of security to its citizens, but it is also a successful market economy." So which is it? Here are both cases, at their strongest.

The case that it is (a kind of) socialism

• It was built by socialists. The Nordic welfare states were created largely by labour movements and social democratic parties that came out of the socialist tradition. Sweden's Social Democratic Party was founded in 1889, in the same era and the same international movement as Bernstein's SPD.
• The state's share is large. Taxes, including social contributions, came to about 43% of GDP in Denmark, 43% in Finland and 41% in Norway and Sweden in 2023, against about 25% in the United States (UNU-WIDER Government Revenue Dataset, via Our World in Data). That money pays for universal healthcare, free or nearly free education, generous parental leave and pensions: goods distributed by need rather than by ability to pay.
• Labour has real power. In Denmark, Finland and Sweden there is no national minimum wage at all (as of July 2026, according to Eurostat). Wages are set by collective agreements between unions and employers, sector by sector, as they also are in Norway and Iceland. That is a remarkable degree of organised, non-market coordination of the labour market.
• Some of the ownership is social. The Norwegian state owns 67% of Equinor, its largest energy company. Norway's sovereign wealth fund, built from oil revenue and worth more than 20,000 billion kroner since 2024, holds on average about 1.5% of every listed company in the world. In a sense, every Norwegian is a part-owner of global capitalism.
• Some Nordic socialists aimed higher. In 1976 the Swedish trade union confederation (LO) published a plan by its economist Rudolf Meidner for "wage-earner funds": large firms would issue new shares each year to union-controlled funds, gradually shifting ownership of Swedish industry to workers. It provoked fierce opposition from business. A much weaker version was introduced after the Social Democrats won the 1982 election, and it was wound up after they lost in 1991. For democratic socialists, this is the moment the Nordic model came closest to crossing from social democracy into socialism, and then turned back.

The case that it is capitalism

• Ownership is overwhelmingly private. Apart from exceptions like Norway's oil, the Nordic economies are made up of privately owned firms, many of them global corporations, competing in open world markets. There is no central plan. By the classic definition (social ownership of the means of production), they are not socialist.
• They are pro-market in many ways. The absence of a minimum wage law, cited above as union power, is equally a sign of a labour market left to private bargaining rather than state rules. The Nordic countries are open trading economies, and in the varieties-of-capitalism scheme (see the capitalism deep dive) they are coordinated market economies.
• The welfare state is paid for by a market economy. Its taxes depend on productive private companies and the people they employ. On this view the welfare state is a way of using capitalism's wealth, not an alternative to it.
• They moved toward markets when they had to. After a severe banking and economic crisis in the early 1990s, Sweden deregulated, strengthened competition law and opened public services to private providers. The wage-earner funds were abolished. Supporters of the "it's capitalism" view see this as the model correcting itself.
• Big tax states are not unique to the Nordics. France collected about 44% of GDP in tax in 2023, more than Denmark, and nobody calls France a Nordic model. Size of the state alone cannot be what makes something socialist.

A third view: welfare capitalism isn't the goal

Some on the left agree that the Nordic model is capitalism and see that as its limit. The philosopher John Rawls, often read as the theorist of "a slightly imaginary Sweden", in fact rejected welfare-state capitalism, as the Stanford Encyclopedia explains, because large inequalities of property would still undermine fair opportunity and equal political influence; he preferred a "property-owning democracy" or a liberal form of socialism in which ownership itself is widely spread. On this view, the Nordic countries show what reform can achieve within capitalism, and also where it stops.

Whether the Nordic model counts as socialism depends on your definition. By what it does, it is the most egalitarian capitalism yet built. By where it came from, it is socialism's most successful compromise.

The fairest summary is that the Nordic countries are social democracies: market economies with private ownership, very large welfare states and powerful organised labour, built mainly by parties of socialist origin. Calling them "socialist" stretches the classic meaning of the word; calling them "just capitalism" ignores how much of their economy is coordinated by bargaining and public provision rather than prices alone.

Part 8 — Weighing it up

The strongest case for socialism

At its best, the socialist case is moral and practical at once. Morally, it holds that a society where some people must sell their working lives to others who own everything is unfree in a way that formal rights don't fix, and that the wealth created by cooperation should be shared by those who create it. Practically, it points to the real achievements of the movement: the shorter working day, public education, universal healthcare, pensions, the right to organise, and the Nordic welfare states, nearly all fought for by socialists and labour movements long before they were accepted by others. It points to co-operatives like Mondragon as proof that democratic firms can work. And it points to the critiques in the capitalism deep dive, on inequality, crises and climate, as problems that markets did not solve on their own.

The strongest critiques

The critics' case is just as serious. The labour theory of value, the foundation of Marx's economics, is rejected by almost all economists. The calculation and incentive problems identified by Mises, Hayek and later by economists like Heilbroner are real, and every economy that abolished markets wholesale ran into them. Revolutionary socialism repeatedly produced one-party states with appalling human costs (the communism deep dive sets out the record and the scholarly ranges). Small co-operative communities from New Harmony onwards struggled to last, and even successful co-operatives face the risk and inequality problems the Stanford Encyclopedia lists. And the most successful "socialist" societies in the popular imagination, the Nordic ones, are, on most definitions, prosperous capitalist economies with private ownership and open markets.

What is still live

Several questions remain genuinely open, and people of good faith answer them differently:

1. Can ownership be widened without wrecking incentives? Employee share schemes, co-operatives, sovereign wealth funds, Roemer's coupons and the Meidner plan are all different answers. The evidence on small-scale versions is mixed but encouraging in places; there is little evidence yet on economy-wide versions.
2. Is reform a road or a destination? Bernstein and Luxemburg's argument is still being had, in every left-wing party that has to decide whether to manage capitalism or try to replace it.
3. Is the Nordic model exportable? It grew in small, high-trust societies with strong unions and particular histories. Whether larger, more diverse countries can copy it is an empirical question with no settled answer.

Robert Owen's question, where does the extra wealth go, has not gone away. Socialists of every branch think the answer under capitalism is "to the wrong people, in the wrong way". Their critics think every attempt to give a better answer has either failed or turned out to be a better kind of capitalism. Knowing which branch someone means is the first step to having that argument well.

The takeaway

Socialism is a family of economic systems united by one aim: to replace or limit private ownership of the means of production with social ownership or control, so that the wealth of cooperation is shared and economic decisions are made democratically. The utopians (Saint-Simon, Fourier, Owen) supplied the ideals and the first experiments. Marx and Engels supplied a theory, built on the labour theory of value and surplus value, that capitalism exploits workers even when it pays them a fair market wage and drives itself into crisis; mainstream economics rejects the value theory, but parts of the critique, about power, crises and ownership, still carry weight. The movement then split: revolutionaries towards communism, reformists like Bernstein and the Fabians towards democratic socialism and, eventually, social democracy, which accepts markets and private ownership while building large welfare states. Market socialists and co-operatives such as Mondragon try to combine social ownership with markets. The Nordic model is best described as social democracy: a market economy built largely by socialist parties, and whether that counts as "socialism" depends on the definition you use.

Try this: next time you hear the word "socialism" in an argument, ask the speaker one question: "Which kind: state ownership, worker ownership, or a welfare state?" Then notice how often the two sides turn out to be talking about different things, and how the argument changes once they aren't.

Sources & Further Reading

Sources
- Stanford Encyclopedia of Philosophy, "Socialism" (Gilabert and O'Neill, revised 2024): definitions, market-socialist models (Schweickart, Roemer, Carens), Corneo's criticisms, Mondragon, Rawls and "a slightly imaginary Sweden". SEP, "Karl Marx" (Wolff and Leopold): the labour theory of value, Nozick's objection, Roemer and Cohen.
- Friedrich Engels, Socialism: Utopian and Scientific (1880), ch. 1, marxists.org: Saint-Simon, Fourier, Owen and New Lanark (dates, population, hours, the 600,000 question). Wikipedia biographies of Owen, Fourier and Saint-Simon (dates, New Harmony 1824–27, labour exchange), used as leads.
- Marx and Engels, Manifesto of the Communist Party (February 1848; 1888 English edition), Project Gutenberg eBook #61. Engels, The Condition of the Working Class in England (1845).
- Karl Marx, Capital, vol. 1 (1867), chs. 1, 6, 7, 9, 10 and 25, and vol. 3 (1894), ch. 13, marxists.org.
- Eugen von Böhm-Bawerk, Karl Marx and the Close of His System (1896), marxists.org; Econlib biographies of Jevons, Menger and Walras; Econlib, "Marxism" (David Prychitko).
- Eduard Bernstein, Evolutionary Socialism (1899; English 1907), preface, ch. 3 and conclusion, marxists.org. Rosa Luxemburg, Reform or Revolution (1898–99), introduction and chs. 7–8, marxists.org.
- Fabian Society, "Our history" (fabians.org.uk). Labour's Clause IV (1918 and 1995) and the SPD's Godesberg Programme (1959), from standard reference summaries; the 1918 wording and the 1929 addition from Sidney Webb's 1917 Observer article as reprinted, with a historical note, in The Spokesman 109 (spokesmanbooks.com).
- Econlib, "Socialism" (Robert Heilbroner), and biographies of Mises, Hayek and Lange.
- International Co-operative Alliance, "Facts and figures" and history pages (ica.coop). Mondragon Corporation, "About us" and "History" (mondragon-corporation.com).
- Vox, "Denmark's prime minister says Bernie Sanders is wrong to call his country socialist", 31 October 2015.
- UNU-WIDER Government Revenue Dataset 2025, via Our World in Data (tax revenue, 2023). Eurostat, "Minimum wage statistics" (situation at 1 July 2026). Equinor, "Our shareholders". Norges Bank Investment Management (nbim.no).
- The Meidner Plan and Sweden's early-1990s crisis and reforms: standard reference summaries (Wikipedia, "Nordic model" and "Rudolf Meidner"), used as leads; details kept general.

Go deeper
- 🌐 SEP: Socialism — the best single map of socialist values, designs and objections, scrupulously fair to both sides.
- 📘 Socialism: Utopian and Scientific — Friedrich Engels. Short and readable; the utopians described by their most famous critic. Free at marxists.org.
- 📘 Capital, vol. 1 — Karl Marx. Start with chapters 6 and 7, where surplus value is explained; free at marxists.org.
- 📘 Evolutionary Socialism — Eduard Bernstein, read alongside Rosa Luxemburg's Reform or Revolution. The founding argument of social democracy and its fiercest reply; both free at marxists.org (Luxemburg here).
- 📘 Envisioning Real Utopias — Erik Olin Wright. A modern sociologist's careful, evidence-minded case for socialist alternatives, including co-operatives and participatory budgets.
- 📘 The Road to Serfdom — F. A. Hayek. The classic warning that planning concentrates power; read it as the strongest opposing case.
- 🌐 Mondragon Corporation: About us — the co-operative's own account, worth comparing with independent studies.
- 🌐 Companion pieces in this library: The Political Spectrum, Fairly Presented and The Great Political Traditions (Politics), Capitalism: How Markets, Prices and Private Property Organise an Economy (this series), and the later deep dives in this series on communism and anarchism.