History of Economic Thought

Xenophon's dialogue on managing an estate gave economics its name (oikos-nomos, household management) and its first study of efficiency and the division of labour.

Aristotle distinguished natural household provisioning from unlimited money-making (chrematistics), analysed money and exchange, and framed value as a moral question.

This Indian treatise on statecraft analysed taxation, prices, wages, and public finance with a realism about wealth and power rare in the ancient world.

Thomas Aquinas synthesised Aristotle and scripture into the doctrine of the just price and the sinfulness of usury, the core of medieval economic ethics.

In the Muqaddimah, Ibn Khaldun analysed the division of labour, supply and demand, taxation, and the cycle of dynasties, centuries before European economics.

Spanish scholastics, watching American silver raise prices, developed early theories of value, money, and inflation that anticipated much later economics.

The dominant doctrine held that a nation grows rich by hoarding gold through trade surpluses, protected by tariffs, colonies, and chartered monopolies.

Thomas Mun gave mercantilism its clearest statement: a nation enriches itself by selling more to foreigners than it buys, judged by the whole trade balance.

Petty's 'political arithmetic' pioneered the statistical study of national income, population, and taxation, insisting economics reason from numbers.

Cantillon's Essai traced how money circulates through an economy and gave the entrepreneur, bearing uncertainty, its first serious economic role.

François Quesnay's Tableau modelled the economy as a circular flow of income between classes — the first attempt to picture a whole economy as a system.

The physiocrats held that only agriculture creates a net product and that the state should stop meddling — the first systematic case for economic freedom.

As reformer and theorist, Turgot advanced the law of diminishing returns and free-trade policy, bridging the physiocrats and Adam Smith.

The founder of economics argued that self-interest, guided by an 'invisible hand' and the division of labour, can enrich a whole society without central design.

Smith's masterwork founded economics as a discipline and made the systematic case for free markets, specialisation, and the gains from exchange.

Paraphrase: In An Essay on the Principle of Population (1798), Malthus argued that unchecked population growth could outpace the growth of food supply.

Say popularised Smith on the Continent and stated 'Say's law' — that supply creates its own demand — the classical claim Keynes would later overturn.

Ricardo turned economics into rigorous deduction: comparative advantage, the theory of rent, and the labour theory of value that Marx would inherit.

John Stuart Mill's synthesis was the century's leading textbook, separating the laws of production from the choices of distribution and softening laissez-faire.

Marx pushed Ricardo's labour theory to a revolutionary end: profit is surplus value taken from workers, and capitalism's contradictions drive it toward crisis.

Owen, Saint-Simon, and Fourier attacked industrial capitalism's poverty and proposed cooperative communities, setting the moral stage for Marx.

Marx's exhaustive analysis of how capital extracts surplus value from labour remains the most influential critique of the market economy ever written.

Menger grounded value in subjective wants and founded the Austrian school, which would prize the market as a process of discovery driven by dispersed knowledge.

Jevons, Menger, and Walras independently explained value by marginal utility, refounding economics on individual choice at the margin, not labour.

Léon Walras modelled a whole economy of interdependent markets clearing at once through mathematics, giving economics its most ambitious formal framework.

Alfred Marshall fused utility and cost into the supply-and-demand scissors, gave economics its central diagram, and named the discipline as we use it today.

Veblen mocked the rational optimiser, coined 'conspicuous consumption', and founded institutional economics, insisting habits and power shape the economy.

Pareto recast welfare without measuring utility: an allocation is efficient when no one can gain without another losing — still the field's core efficiency test.

Keynes argued that economies can stall at mass unemployment and that governments can and should spend to revive demand, founding modern macroeconomics.

Hayek defended the market as an information system no planner can match and warned that central control threatens freedom, leading the Austrian tradition.

Fisher gave the quantity theory of money its modern form and analysed interest and debt-deflation, shaping how economists think about money and prices.

Keynes's book explained why economies can settle below full employment and how managing aggregate demand can pull them back — the birth of macro policy.

Von Neumann and Morgenstern gave economics a mathematics of strategic interaction, seeding the game theory that would reshape microeconomics decades later.

Samuelson mathematised economics and fused Keynesian macro with neoclassical micro into the postwar 'synthesis' taught in textbooks for a generation.

Friedman revived the case that 'inflation is always a monetary phenomenon' and led the free-market counter-revolution against Keynesian fine-tuning.

Coase asked why firms exist and how rights over externalities get bargained, founding the economics of transaction costs and new institutional analysis.

The Chicago school argued that steady control of the money supply, not fiscal activism, stabilises an economy, dominating policy from the late 1970s.

Lucas argued that people anticipate policy, so predictable intervention is neutralised; rational expectations and the Lucas critique remade macroeconomics.

Their prospect theory showed that real choices systematically break the rational model, launching behavioural economics and winning economics a Nobel.

Sen recast welfare and development around human capabilities and freedoms rather than income alone, reconnecting economics with ethics and justice.

Ostrom showed that communities can govern shared resources without markets or the state, overturning the assumption that commons must end in tragedy.

Merging psychology and economics, the field maps the biases and heuristics of real decision-makers, reshaping finance, policy, and the theory of choice.

Thaler turned behavioural findings into policy, showing how the design of choices — the 'nudge' — steers real decisions in savings, health, and beyond.