Jean-Baptiste Say

Jean-Baptiste Say

Jean-Baptiste Say (1767-1832) was a Frenchman, born in Lyon who helped to popularise Adam Smith's work in France.^[32] His book, A Treatise on Political Economy (1803) contained a brief passage, which later became orthodoxy in political economics until the Great Depression and known as Say's Law of markets. Say argued that there could never be a general deficiency of demand or a general glut of commodities in the whole economy. People produce things, said Say, to fulfill their own wants, rather than those of others. Production is therefore not a question of supply, but an indication of producers demanding goods. Say agreed that a part of the income is saved by the households, but in the long term, savings are invested. Investment and consumption are the two elements of demand, so that production is demand, so it is impossible for production to outrun demand, or for there to be a "general glut" of supply. Say also argued that money was neutral, because its sole role is to facilitate exchanges: therefore, people demand money only to buy commodities. Say said that "money is a veil". To sum up these two ideas, Say said "products are exchanged for products". At most, there will be different economic sectors whose demands are not fulfilled. But over time supplies will shift, businesses will retool for different production and the market will correct itself. An example of a "general glut" could be unemployment, in other words, too great a supply of workers, and too few jobs. Say's Law advocates would suggest that this necessarily means there is an excess demand for other products that will correct itself. This remained a foundation of economic theory until the 1930s. Say's Law was first put forward by James Mill (1773-1836) in English, and was advocated by David Ricardo, Henry Thornton^[33] and John Stuart Mill. However two political economists, Thomas Malthus and Sismondi, were unconvinced.

Thomas Malthus

Thomas Malthus (1766-1834) was a Tory minister in the United Kingdom Parliament who, contrasting to Bentham, believed in strict government abstention from social ills.^[34] Malthus devoted the last chapter of his book Principles of Political Economy (1820) to rebutting Say's law, and argued that the economy could stagnate with a lack of "effectual demand".^[35] In other words, wages if less than the total costs of production cannot purchase the total output of industry and that this would cause prices to fall. Price falls decrease incentives to invest, and the spiral could continue indefinitely. Malthus is more notorious however for his earlier work, An Essay on the Principle of Population. This argued that intervention was impossible because of two factors. "Food is necessary to the existence of man," wrote Malthus. "The passion between the sexes is necessary and will remain nearly in its present state," he added, meaning that the "power of the population is infinitely greater than the power in the Earth to produce subsistence for man."^[36] Nevertheless growth in population is checked by "misery and vice". Any increase in wages for the masses would cause only a temporary growth in population, which given the constraints in the supply of the Earth's produce would lead to misery, vice and a corresponding readjustment to the original population.^[37] However more labour could mean more economic growth, either one of which was able to be produced by an accumulation of capital.