Jean-Baptiste Say

• 1. Introduction

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  Jean-Baptiste Say was born in Lyon on the 5th of January 1767, into a Protestant family whose roots had been uprooted by religious persecution a generation earlier. His grandfather's family had fled from Nîmes to Geneva after the revocation of the Edict of Nantes, and that history of displacement and resilience would shadow the economist Say would become. At eighteen, he was sent with his brother Horace to England, lodging first in Croydon and later in Fulham, working for two London-based sugar merchants. He would go on to name a principle that economists and statespeople have argued over ever since: the law of markets, better known as Say's law. He would build a cotton-spinning mill that employed hundreds of workers. He would write textbooks that shaped how the Western world thought about trade, production, and the people who drive an economy forward. And he would do much of this under Napoleon's censorship, in exile from his own ideas. The questions this story raises are not small ones. What exactly did Say claim, and why has it remained so contested? What did he see in entrepreneurs that his contemporaries missed? And how did a man once employed as a sugar merchant's clerk become one of the most debated economists in the history of Western thought?

• 2. The Making of an Economist

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  Étienne Clavière, a financier who would later become France's finance minister, gave Say his first real foothold in Paris. Say returned from England at the end of 1786, after accompanying Samuel Hibbert on a voyage to France that ended in December with Hibbert's death in Nantes. Clavière took him on at a life assurance company, and the connection would prove lasting. In 1793, Say became secretary to Clavière directly, adopting the pseudonym Atticus in keeping with French Revolutionary fashion. Before that, he had already published a pamphlet on the liberty of the press in 1789 and worked under Mirabeau on the Courrier de Provence. He had also volunteered in the campaign of Champagne in 1792. From 1794 to 1800, he edited a periodical called La Decade philosophique, litteraire, et politique, using it to spread the ideas of Adam Smith to a French readership. That editorial work built his reputation. When the consular government took shape in 1799, Say was selected as one of its 100 members of the Tribunat. He resigned the editorship of the Decade to take the seat. The publication in 1803 of the Traité d'économie politique was the culmination of those years of reading, writing, and arguing. It remains the work he is most remembered for. His brother Louis Auguste, born in 1774, followed him into economics as well.

• 3. Napoleon and the Spinning Mill

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  Napoleon's government removed Say from the Tribunat in 1804. Say had refused to bend his convictions to suit the regime, and the cost was his political position. Rather than fall silent, he turned to industry. He taught himself the processes of cotton manufacture and established a spinning mill at Auchy-lès-Hesdin in the Pas de Calais. At its peak, the mill employed some 400-500 people, the majority of them women and children. While running the factory, Say spent his leisure time revising the Traité, which had gone out of print. State censorship under Napoleon blocked him from republishing it. The constraint was lifted when the allied powers entered France in 1814, and Say took that opening to bring out a second edition. He dedicated it to Emperor Alexander I of Russia, who had described himself as Say's pupil. That same year, the French government sent Say to study the economic condition of the United Kingdom. His findings appeared in a tract called De l'Angleterre et des Anglais. A third edition of the Traité followed in 1817. The trajectory from dismissed tribune to factory owner to internationally consulted economist illustrates the range of roles Say inhabited across a single career. A chair of industrial economy was created for him in 1819 at the Conservatoire des Arts et Métiers, formally recognizing what that career had produced.

• 4. Supply, Demand, and a Lasting Argument

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  "Products are paid for with products," Say wrote in 1803 on page 153 of the Traité. That sentence sits at the center of the dispute that bears his name. Say's law, also called the law of markets, holds at its least controversial that supply constitutes its own demand. A direct translation from the Traité puts it this way: "Inherent in supply is the wherewithal for its own consumption." Say explained the mechanism at some length. The moment a product is created, it opens a market for other products to the full extent of its own value, because the producer converts any money received into purchases of other goods. Money, he argued, is not the engine of trade. It plays only a momentary function. What facilitates sales is the abundance of other products in general, not the abundance of money. The phrase "supply creates its own demand" was actually coined by John Maynard Keynes, who used it critically. Keynes treated it as equivalent to Say's position. Some economists who support Say's law have disputed that reading, arguing a more accurate summary is "production precedes consumption." Similar ideas appeared in James Mill's writing in 1808, where Mill stated that production of commodities creates the one and universal cause of a market for those same commodities. John Stuart Mill restated related sentiments in 1848. John Kenneth Galbraith later called Say's law "the most distinguished example of the stability of economic ideas, including when they are wrong." Say's law gained its resonance during the early Industrial Revolution, when England was wrestling with cyclical inability to maintain both sales and employment at once, and many feared there was a ceiling on how much an economy could produce and sell.

• 5. Theorizing the Entrepreneur

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  In the Traité, Say argued that any production process required three things from the person driving it: effort, knowledge, and what he called the "application" of the entrepreneur. That framing was new. Entrepreneurs, in Say's account, were intermediaries who combined land, capital, and labor to meet consumer demand. They held a coordinating role at the center of economic life. Say also looked beyond large-scale industrialists. He used the example of a knife grinder working in the streets: when a workman carries on an enterprise on his own account, Say wrote, he is both workman and entrepreneur. The boundary between labor and enterprise was not fixed by the scale of the operation. On the question of what made entrepreneurs succeed, Say pointed to judgment. He believed entrepreneurs had to assess market needs and the means to meet them on a continuous basis, which required what he called an "unerring market sense." He treated entrepreneurial income primarily as a form of high wages, compensation for skills and expert knowledge, not as profit from risk in the way that Joseph Schumpeter would later frame it. Say made a distinction between the enterprise function and the supply of capital, which allowed him to separate what entrepreneurs earned from what capital owners earned. He did acknowledge risk and uncertainty, writing that enterprise always involved obstacles to surmount, anxieties to repress, misfortunes to repair, and expedients to devise. He also observed that manufacturers sometimes discover processes that introduce new products, improve old ones, or produce goods more economically. Those observations touched on themes Schumpeter would later build into a full theory of innovation, though Say never pursued them to that depth.

• 6. Later Years and Legacy

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  In 1825, Say joined the improvement council of the École spéciale de commerce et d'industrie, the institution now known as ESCP Business School, which historians regard as one of the first business schools in the world. Six years later, in 1831, he was appointed professor of political economy at the Collège de France, one of the most prestigious academic appointments in France. His Cours complet d'économie politique pratique was published in 1828-1830. In 1826, he had been elected a foreign member of the Royal Swedish Academy of Sciences. Say's final years were shadowed by illness. He suffered attacks of nervous apoplexy and lost his wife, Mlle Deloche, whom he had married in 1793, in January 1830. His health declined steadily after her death. When revolution broke out that year, he was named to the council-general of the department of the Seine but had to resign. He died in Paris on the 15th of November 1832 and was buried in Père Lachaise Cemetery. The street now called Rue Jean-Baptiste Say, in the 9th arrondissement of Paris, carries his name. His long engagement with the École spéciale de commerce et d'industrie, an institution that predated modern business education as a field, points to a dimension of his influence that runs alongside the theoretical debates: Say helped build the infrastructure through which economics would be taught.