Cities, factories and citizens arrived together (3.2.2–3.2.4). All three were being reorganised by a single underlying system that was remaking every human relationship it touched — including many that had never been economic at all.

Naming that system precisely is harder than it looks, and getting the definition right is most of the work of this lesson.

The idea, in plain words

Note what that last clause does. Capitalism is not simply an arrangement in which some people want to get rich. It is one in which the pursuit of profit is compulsory for anyone who wants to remain in business. Individual motives become almost irrelevant: a benevolent employer who declines to cut costs is competed out by one who does not. That structural compulsion is what distinguishes the system from mere commerce, and it is what makes it a sociological object rather than a moral one.

Three accounts

The founders agreed on almost none of this, and their disagreement is instructive.

Marx: capital as a social relation

Marx's central move (4.1) is to insist that capital is not a thing but a relation. A pile of money is not capital; a machine is not capital. They become capital only within a relationship in which one party owns them and another must work them in order to live.

M–C–M′. Marx contrasts two circuits. In simple exchange, a producer sells a commodity to buy another: C–M–C, and the point is the final commodity, which is consumed. In capitalist production the circuit is M–C–M′: money buys commodities (materials and labour power) in order to produce something sold for more money. The purpose is not use but increase, and there is no natural stopping point.

Surplus value. Where does M′ exceed M? Marx's answer: the worker sells not labour but labour power — the capacity to work for a period. Its value is what it costs to reproduce the worker. But labour power, once purchased, can produce more value than it costs. The difference is surplus value, and it is the source of profit. (This account rests on the labour theory of value, which most economists reject and which many sociologists treat as an analytical frame rather than a price theory. 4.1 examines it properly.)

Primitive accumulation. And the historical part, which is the enclosure story generalised. Capital could not begin without a prior separation of producers from their means of production. Marx devotes some of his most furious pages to how this was accomplished: enclosure, the clearing of estates, the dissolution of the monasteries, colonial plunder, the slave trade, and the "bloody legislation" against the vagrants the process created. His conclusion: capital comes into the world "dripping from head to foot, from every pore, with blood and dirt."

Weber: rational capitalism

Weber (4.3) agreed that something distinctive had appeared and located it differently. Acquisitiveness, he wrote, has existed among "waiters, physicians, coachmen, artists, prostitutes, dishonest officials, soldiers, nobles, crusaders, gamblers and beggars," and has nothing to do with capitalism as such.

What is distinctive is rational, calculable, systematic enterprise. Its preconditions, on his account:

Rational capital accounting — double-entry bookkeeping, which makes the profitability of an enterprise continuously calculable and separates the firm's accounts from the owner's household. Formally free labour — workers legally free to contract, and economically compelled to do so. Both halves matter: slaves cannot be hired and fired to match demand, and workers with alternatives cannot be relied upon. Separation of business from household. Calculable law and administration — a legal system whose decisions can be predicted, so that long-term investment is rational. Free markets in goods and labour, and appropriable technology.

And then his famous cultural argument: the Protestant ethic supplied a disposition — methodical, disciplined, ascetic, treating worldly work as a calling — that fitted this system before it existed, and helped it take hold (1.3.6).

Polanyi: the fictitious commodities

Karl Polanyi's The Great Transformation (1944) supplies the framework that connects the other two to the enclosure story.

His argument: in all previous societies the economy was embedded in social relations — production and distribution organised by kinship, reciprocity, redistribution by a centre, and householding, with markets present but peripheral. The nineteenth century attempted something unprecedented: to disembed the economy, making society an adjunct of the market rather than the reverse.

This required treating three things as commodities that are not in fact produced for sale — his fictitious commodities:

Labour is human activity, inseparable from the person. Land is nature. Money is a token of purchasing power created by state and banking mechanisms.

Treating them as ordinary commodities means subjecting human beings, nature and purchasing power to the discipline of the market — which, Polanyi argues, no society can survive unmodified.

Hence his double movement: the extension of market organisation provokes, spontaneously and from every quarter, a counter-movement of social protection — factory acts, public health legislation, trade unions, central banking, tariffs, social insurance. Not from ideology, but because the alternative is social destruction. Polanyi's reading of the twentieth century's catastrophes is that they followed from attempting the disembedding too thoroughly.

Go deeper

Capitalism and slavery

An entanglement that a course committed to honesty must state, and one where the historiography is contested in ways worth handling carefully.

Eric Williams, the Trinidadian historian and later prime minister, argued in Capitalism and Slavery (1944) that profits from the slave trade and slave-produced commodities helped finance British industrialisation, and — his more provocative claim — that abolition came when slavery had ceased to be economically central rather than primarily from moral pressure. The first claim has been substantially supported by later research on the scale of Atlantic commerce; the second has been heavily contested, and most historians now accord more weight to abolitionist mobilisation and to enslaved people's own resistance, including the Haitian Revolution (3.2.1).

The newer literature — Beckert's Empire of Cotton (3.2.2), and others — documents in detail how plantation slavery, industrial manufacturing, banking, insurance and shipping formed a single system. Some works in this vein have been criticised by economic historians for specific quantitative claims, notably about slavery's share of national output and about productivity growth on plantations; the criticisms are technical and serious, and the broader structural argument does not depend on the contested numbers.

The safe formulation, which the evidence supports: industrial capitalism developed within, and was materially entangled with, an Atlantic system of enslaved labour, and any account that treats slavery as an archaic institution external to capitalist modernity is not describing what happened.

There is no single capitalism

An essential corrective against treating the word as naming one thing.

Contemporary capitalist economies differ substantially in the organisation of finance, labour relations, training, corporate governance and welfare. The varieties of capitalism literature distinguishes, at minimum, liberal market economies (coordination primarily through competitive markets and hierarchies) from coordinated market economies (coordination through employer associations, bank finance, sectoral bargaining and long-term relationships), with further variants for East Asian developmental states and for economies with large informal sectors.

Two consequences. Comparative claims about "capitalism" that generalise from one national case are weak. And the range of variation is evidence that the system's institutions are political constructions rather than natural forms — which is 2.2.8's point about institutions, applied at the largest scale.

And note the informal-sector qualification, which matters especially for India and much of the global South: a large share of the workforce is not in formally contracted wage employment at all, but in self-employment, family labour, casual work and unregistered enterprise (3.2.4, 9.4). Theories built on the assumption of a formally proletarianised workforce fit those economies badly.

What capitalism does to non-economic life

The reason this is a sociology lesson rather than an economics one. Three mechanisms recur throughout the rest of the course.

Commodification — the extension of market exchange to things previously outside it: land, labour, care, education, health, water, attention, personal data. Each extension is contested, and the contest is what Polanyi's double movement describes.

Time discipline and rationalisation — the reorganisation of daily life around measurable, purchasable time (1.1.3, 3.2.2), and the spread of calculative attitudes into domains where they had no purchase (Weber's iron cage, Simmel's money economy).

And the reconstitution of persons. Capitalism does not merely arrange production; it produces particular kinds of people — 1.1.3's internalisation, operating through work. Marx's alienation, Weber's methodical vocational self, Simmel's blasé calculator, and modern accounts of the entrepreneurial or precarious self are all descriptions of this.

Why it matters

It is the system the founders were trying to explain. Marx's class and alienation, Weber's rationalisation and the iron cage, Durkheim's division of labour and anomie, Simmel's money economy — every major concept in Part 4 is a response to this transformation.

It gives you a definition that is analytic rather than political. You can now say what capitalism is — wage labour, generalised commodity production, competitive accumulation — separately from what you think of it. That separation is what makes the term usable (1.3.3's value-freedom).

It gives you Polanyi's double movement, which is one of the most useful frameworks in the whole course for reading contemporary politics: every extension of market organisation into a new domain generates a counter-movement, and most political conflict in modern societies is legible in those terms.

And it establishes the global frame once more. Enclosure in England, plantations in the Caribbean, silver from the Americas, cotton from the American South, and markets in India were parts of one system. The transformation that produced sociology was never national — which is the argument Part 6 will make explicit.