Johan Gustav Knut Wicksell was born in 1851 in Stockholm. His mother died when he was 6, and his father, a moderately successful businessman and real estate investor, died when Knut was 15. His fathers estate provided sufficient funds for him to enroll at the University of Uppsala in 1869, where he studied mathematics and physics. Within two years, he had taken his first degree and gone on to graduate work. He passed two of the three required examinations for a doctorate in mathematics in 1875 but waited until 1885 to finish the third. By then, Wicksell had become a well-known social critic and lecturer, and his interests had changed to the social sciences, and to economics in particular.
Early in his life, Wicksell had studied the Bible at great length and even contemplated a religious calling. But as he read social science tracts in college, including George Drysdales influential The Elements of Social Science, his calling as a social scientist became clear. His interests turned to controversial topics such as human sexuality and birth control, discussed at length in Drysdales essentially Malthusian tome.
In 1880, Wicksell gave his first public address on such a topic at Uppsala. The lecture was titled The Most Common Causes of Habitual Drunkenness and How to Remove Them. At the time, the ideas Wicksell expressed in this lecture about the relationship between worker alienation, poverty, and the social ills of alcohol and prostitution were considered radical, even socialist. The controversial nature of this and subsequent lectures resulted in much publicity for Wicksell, who used his notoriety to earn a meager living by speaking publicly, then writing his speeches for publication.
In 1885, funded by the sale of some family-owned properties, Wicksell was able to spend a year in London reading the major works of the classical economists. During his stay, a small, obscure foundationthe Victor Lorén Foundationawarded him a three year grant to study economics in Germany and Austria. Although the Lorén will was contested, it was settled in Wicksells favor in 1887, and he received the promised funds. Had it not been for this grant, Wicksell might well not have become an economist.
In Vienna, Wicksell heard lectures by Austrian economist Carl Menger. He also attended lectures at the Universities of Strassburg, Berlin and Paris. He then returned to Sweden, but his radical reputation prevented him from getting a position at the University of Stockholm.
In the summer of 1887, Wicksell took a common-law wife, Anna Bugge. By 1893, he had two sons but still no permanent position with which to support his family. During the 1890s, his work in economicssome of it pathbreaking, such as Value, Capital and Rent (1892), his first major work went largely unnoticed. But his radical speeches continued to earn him another sort of notice.
Wicksells second major economic work, Studies in the Theory of Public Finance, published in 1896, was a groundbreaking application of marginal thinking to such issues as progressive taxation, optimum tax prices for public and semipublic goods, public utilities and oligopolies characterized by cartel behavior. Interest and Prices, a work on monetary economics, was published in 1898.
On the strength of his published economic work, Wicksell applied to the University of Uppsala for a doctorate in economics. One was finally granted, with honors, in 1896. He was still denied an economics professorship, however, because at that time in Sweden economics was taught in law school, and Wicksell lacked a law degree. So he borrowed money and moved his family to Uppsala, where he finished the four-year law degree in two years. He became a lecturer at the University of Uppsala, but his income there depended solely on the number of students who took his tutorials. In 1900, at the age of 49, he finally received a teaching position in economics at the University of Lund, although the position was not fully funded until 1904.
University life was productive for Wicksell. In addition to teaching classes in tax law and economics, he wrote Lectures on Political Economy (volumes 1 and 2, 1901 and 1906) and numerous articles on pre and postWorld War I policy issues. He favored a mild form of socialism, achieved gradually and built on the foundations of a welfare state. Sweden came to represent precisely this vision as the 20th century unfolded.
In 1908, in a stand for free speech and against the advice of friends, he gave a lecture that satirized the Immaculate Conception. The lecture, which Wicksell intended as a test case, resulted in a two-month jail sentence. He served the term in 1910 after a lower courts decision was upheld on appeal.
After retiring from Lund in 1916, Wicksell and his wife moved to Stockholm, where he continued to write profusely and advise the government on banking and financial issues. He also supervised doctoral dissertations in economics, often for students who later became famous in their own right, such as Bertil Ohlin and joint Nobel Prize winner (with F. A. Hayek) Gunnar Myrdal. He died in Stockholm in May 1926 while working on an article on the theory of interest that was to be included in a book honoring Austrian economist Friedrich von Wieser.
Many of Wicksells theoretical extensions went unrecognized during his lifetime. It was only after his death that his major works were translated and appreciated, leading Mark Blaug, one of the foremost historians of economic thought, to proclaim that Wicksell more or less founded modern macroeconomics (Blaug 1986, 274).
Major Contributions to Economics
Wicksells work is linked directly to three major traditions in economic theory:
- the quantity theory of money and its implications for allowing an analysis of aggregate macro outcomes as well as their appropriate monetary policies;
- the Austrian theory of business cycles, which uses Wicksells concept of a natural rate of interest;
- and the modern Public Choice paradigm in public finance, which is based on Wicksells contentions regarding interest groups in democracies.
According to Blaug (1986, 272), Wicksells work was an attempt at integrating general equilibrium theory [learned from Leon Walras], the Austrian theory of capital [learned from Eugen von Böhm-Bawerks 1884 classic Capital and Interest: History and Critique of Interest Theories] and interest, and the marginal productivity theory of income distribution [learned from David Ricardos 1817 treatise On the Principles of Political Economy and Taxation]. While working on his grand synthesis of these three theoretical approaches, Wicksell made improvements to each for which he is remembered today. The most important is probably his distinction between the natural and money rates of interest.
The money, or market, rate of interest is the observed rate at which banks carry on credit transactions. The natural rate is a bit more complicated. Wicksell variously defined it as the rate that is neutral for commodity prices and the rate at which the supply and demand for capital are in equilibrium in an economy not using money at all. The tie-in between Wicksell and the Austrians is straightforward: In the Austrian business cycle theory, a boom emerges when the natural rate of interest is higher than the market rate, which is subject to manipulations by humans using sophisticated financial institutions and credit instruments that drive the market rate below the natural, equilibrium rate.
This is Wicksells cumulative process model of business cycles. When the loan (market) rate of interest is below the natural rate, the demand for loans by entrepreneurs exceeds the quantity of savings in the economy. Banks expand credit by creating checking accounts (demand deposits) rather than by supplying savings, and an economic expansion occurs that must, other things being equal, drive up prices. Although Wicksells process does not demand a monetary change to begin, it is perfectly consistent withand this is what the Austrians later emphasized a lowering of the market interest rate through central bank monetary injections.
Ludwig von Mises and Hayek took Wicksells cumulative cycle process much further. They combined it with the doctrine of forced savings to create a monetary theory of cycles in which the money interest rate divergence from the natural rate, generated by expansionary central bank policy or by an unanticipated inflow of gold specie working its way through the banking system, creates a distortion in the time structure of production between capital goods and consumer goods that cannot be maintained. This results in a necessary economic downturn during which all of the booms malinvestments have to be liquidated. The Austrians extension of Wicksells analysis was the major business cycle theory innovation before John Maynard Keynes wrote The General Theory of Employment, Interest and Money in 1936, and it remains an alternative money-generated cycle theory today.
Understood within the context of Wicksells model, the interest rate divergence phenomenon was crucial for understanding the differences between Wicksells treatment of the quantity theory of money and the view held by his main rival, American economist Irving Fisher. For Fisher, changes in the quantity of money fully explained changes in long-run prices; for Wicksell, the quantity of money was but one aspect of the mechanism that changed prices because the flow of goods and services worked its way through the economy by first changing interest rates.
Keynes no doubt read and appreciated Wicksells approach and then built on it, stressing that cycles were generated by changes in real factors such as investment spending and interest rates and not by monetary changes. The seeds of the Keynesianmonetarist debates that began in the 1960s were planted first in the differences between Fisher and Wicksell. Nonethelessand surprisinglydespite Fishers and Wicksells seemingly disparate theoretical approaches, both men reached the same implied policy conclusion: A nations central bank does bear the responsibility for controlling the long-run price level.
Another important Wicksell theoretical element connecting major economists is the real shock cyclic view, also emphasized by Austrian economist Joseph Schumpeter, who saw innovators and entrepreneurs as an often destabilizing shock to the market economy, giving rise to what he called creative destruction. In this sense, there is a continuous thread that runs from Wicksell, through Schumpeter, and on to Keynes influential nonmonetary model of business cycles. The modern Keynesianmonetarist dispute over the role of money and its effects on the macroeconomy has its roots in the earlier FisherWicksell differences concerning the nature and causes of cycles.
Wicksell perfectly anticipated modern central bank monetary policy when he argued that interest rates must be changed to control prices. He favored price-level stabilization because he felt that inflation and deflation were unfair income redistributive events, where some gained at others expense. His policy rule was simple: If prices were rising, then interest rates were too low; if prices were falling, then rates were too high. His exposition and extension of the quantity and marginal productivity theories ensure him a permanent place in the development of modern macroeconomic thought.
 Thomas Robert Malthus (17661834) authored his famous An Essay on the Principle of Population in 1798. In this essay, Malthus argued that population growth is limited by the supply of food and that because population grows faster (geometrically) than the food supply (arithmetically), poverty is not a curable but an inevitable, long-run condition. Because social reformers schemes to better the lot of humanity seemed to run aground on Malthus dreary predictions about starvation and poverty, all such reformers, including Wicksell, had to effectively deal with Malthus pessimistic contention in their own work. Today, those who hold the view that overpopulation and environmental degradation are an increasing concern are often referred to as neo-Malthusians.
 The natural rate was also called, in Wicksells various writings, neutral, normal and real. The money rate was also sometimes called the market rate.
 For more information, see Robert Formaini, Ludwig von Mises, Federal Reserve Bank of Dallas Economic Insights, vol. 6, no. 4, and Hayek, Economic Insights, vol. 4, no. 1.
 See Laidler (1991), 146. For a modern exposition of the Austrian economic theory, see Roger W. Garrison (2001), Time and Money: The Macroeconomics of Capital Structure (London: Routledge).
 Humphrey (1997), 72.