Skip to content

Milton Friedman

Categories : Home -> Economics

This article is part of the Basic Course on Liberalism -> Module 4: Main Schools of Economics

Last version : 2026-05-16

Milton Friedman

Life, Work and Legacy

Milton Friedman (1912–2006) was one of the most influential, celebrated, and debated economists of the 20th century. The leading exponent of the Chicago School of Economics and founder of monetarism, he dedicated his academic career and public life to reviving faith in the free market, criticizing the interventionist policies of Keynesianism, and defending individual freedom against the growth of state power.

1. Life and Intellectual Trajectory

Milton Friedman was born in Brooklyn, New York, into a humble family of Jewish immigrants from Eastern Europe. Demonstrating a brilliant aptitude for mathematics from a very young age, he completed his undergraduate studies at Rutgers University. He later earned a master's degree from the University of Chicago (1933) and his Ph.D. from Columbia University (1946).

During the years of the Great Depression and World War II, Friedman worked as a statistician and economist for various U.S. federal government agencies (associated with the New Deal and the design of wartime fiscal policy). This direct empirical experience with state bureaucracy definitively shaped his later skepticism toward centralized planning and government intervention.

In 1946, he returned to the University of Chicago, where he taught and conducted research for three decades. Together with intellectuals such as George Stigler, he consolidated the so-called Chicago School, a neoclassical macroeconomic current characterized by empirical rigor and a staunch defense of free markets in an era when the Keynesian paradigm dominated almost absolutely in academia and global economic policy.

In 1947, he actively participated alongside Friedrich Hayek in the founding of the Mont Pelerin Society, a key intellectual bastion for the preservation and dissemination of classical liberalism. In 1976, the Swedish Academy awarded him the Nobel Prize in Economics for his research in the fields of consumption analysis, monetary history and theory, and the complexity of stabilization policies. After retiring from active teaching, he continued his work as a senior researcher at the Hoover Institution at Stanford University until his death in San Francisco in 2006.

What is Monetarism?

  • Simple definition: Economic theory developed primarily by Milton Friedman and Anna Schwartz (especially in their book A Monetary History of the United States, 1963) that holds that inflation and economic fluctuations are, ultimately, monetary phenomena.
  • Central ideas:
  • “Inflation is always and everywhere a monetary phenomenon” (Friedman’s famous phrase).
  • The quantity of money in circulation (money supply) determines the general price level in the long run.
  • Proposes a fixed monetary rule: the money supply should grow at a constant and predictable rate (for example, 3-5% annually, equal to real economic growth), instead of allowing the central bank to act discretionarily.
  • Rejects Keynesian fiscal policy (public deficits to stimulate) and prioritizes control of the quantity of money.
  • Historical success: In the 1970s-80s it explained the stagflation (inflation + unemployment) that Keynesianism could not explain. It influenced the policies of Reagan (U.S.), Thatcher (U.K.), and the creation of independent central banks.

Austrian critique (brief and direct):
Austrians (Mises, Hayek, Rothbard) agree that inflation is monetary, but disagree radically on the cause and the solution:

  • For Austrians the problem is not only the quantity of money, but its asymmetric injection through bank credit (artificial credit expansion), which distorts the temporal structure of production (Austrian business cycle theory).
  • A fixed monetary rule (monetarism) is still state intervention and generates cycles; the only coherent solution is free banking (private banks issuing money backed by gold or commodities) or, in Rothbard, 100% reserves.
  • Friedman and the Chicago School see the cycle as a problem of “too much or too little” money; Austrians see it as a problem of bad relative price signals caused by the central bank.

In short: the Chicago School was (and continues to be in its descendants) the pragmatic-empirical liberalism that won the political battle against Keynesianism in the 80s, while monetarism was its macroeconomic tool. Both are allies of Austrian thought in defending the market, but they represent a more moderate and statistical version, not the radical praxeological and ethical tradition of Vienna.

2. Major Academic Works and Contributions

Friedman’s theoretical work completely transformed modern macroeconomics through his challenges to the orthodoxy of his time:

A. Monetarism and the Quantity Theory of Money

Friedman is unanimously recognized as the father of modern monetarism. He rescued and updated the old quantity theory of money, arguing that changes in the money supply have determining effects on production in the short run and on the general price level in the long run. His most famous maxim summarizes this thinking: “Inflation is always and everywhere a monetary phenomenon”, generated solely by an increase in the quantity of money in circulation faster than the real production of goods and services.

In his monumental joint work with Anna Schwartz, A Monetary History of the United States, 1867–1960 (1963), he conducted an exhaustive historical analysis that demonstrated that the Great Depression of the 1930s was not an intrinsic failure of capitalism (as the general consensus held), but the direct consequence of poor management by the Federal Reserve (Fed), which passively allowed the money supply to contract by a third, strangling the banking system and real economic activity.

B. The Permanent Income Hypothesis (1957)

Against John Maynard Keynes’ theory, which postulated that household consumption fluctuates directly according to their current short-term income, Friedman developed the Permanent Income Hypothesis. He empirically demonstrated that individuals’ consumption and investment decisions are guided by their expectations of long-term income (their “permanent income”) and not by transitory gains or losses. This implied that the transitory public spending fiscal stimuli proposed by governments had a much smaller and less predictable impact on real economic recovery than assumed.

C. The Natural Rate of Unemployment and the Critique of the Phillips Curve

In the 1960s, economic planners assumed there was a stable and permanent trade-off between inflation and unemployment (the traditional Phillips Curve): to lower unemployment, it was enough to accept a little more inflation through expansionary policies. Friedman (in parallel with Edmund Phelps) challenged this by introducing the concept of the Natural Rate of Unemployment and the role of inflation expectations.

He argued that government attempts to force unemployment below its structural rate would only achieve ever-higher inflation in the long run, as workers and entrepreneurs would adjust their price expectations. This theoretical prediction was tragically confirmed in the 1970s with the arrival of stagflation (high unemployment combined with high inflation), a phenomenon that the traditional Keynesian framework considered theoretically impossible and which precipitated the decline of its academic hegemony.

D. Political Philosophy and Public Outreach

Friedman possessed an unusual capacity for communication in the scientific field. In works aimed at a mass audience such as Capitalism and Freedom (1962) and Free to Choose (1980) (the latter accompanied by a successful PBS public television documentary series, written with his wife Rose Friedman), he translated complex macroeconomic concepts into a common-sense narrative based on the benefits of voluntary cooperation and distrust of state coercion.

3. Public Policy Proposals and Legacy

Milton Friedman’s legacy transcended university walls and directly shaped the economic architecture of the late 20th century. Among his most disruptive proposals, many of which moved from academic utopia to institutional reality, stand out:

  • End of compulsory military service: Friedman was a key member of the Gates Commission (1970). His economic and moral argument for the superiority of a voluntary professional army over the “forced labor” of conscription was decisive in abolishing compulsory military service in the United States after the Vietnam War.
  • Flexible exchange rates: He successfully advocated abandoning the fixed exchange rate system that emerged from Bretton Woods, paving the way for the current model of floating currencies regulated by market forces.
  • Educational vouchers (School choice): He proposed decentralizing education through a system where the State finances demand (through a voucher given directly to parents) rather than supply (public schools), allowing families to freely choose between public and private schools in a healthy competitive environment.
  • Negative Income Tax: He designed a mechanism for direct subsidies to the lowest incomes through the tax system. If a citizen earned less than a minimum threshold, the State would pay them a proportion of the difference instead of collecting taxes from them. This proposal inspired current tax credit programs (such as the Earned Income Tax Credit in the U.S.) and is a direct technical precursor to the modern debate on basic income.
  • Deregulation and Privatization: His tireless defense of the privatization of state monopolies and the elimination of price controls (such as the minimum wage or rent controls) served as the ideological substrate for the economic reforms of Ronald Reagan in the U.S. and Margaret Thatcher in the U.K. during the 1980s.

Main Critiques of His Ideas and His Responses

Milton Friedman’s revolutionary theses on monetarism, the free market, and limiting state power generated heated debates throughout the second half of the 20th century. Positioned at the center of the macroeconomic scene, he received cross-attacks from the Keynesian and social-democratic left, as well as from the more radical liberal right, such as the Austrian School.

1. Macroeconomic and Keynesian Critiques

The alleged instability of the velocity of money

  • The critique: Keynesian economists argued that Friedman’s central proposal —the “monetary rule,” which required central banks to increase the money supply at a fixed and constant rate— was dangerously rigid. They maintained that the velocity of circulation of money is not stable (especially in times of crisis or “liquidity traps,” where people prefer to hoard cash), so rigid issuance could cause severe recessions or unforeseen inflationary spirals.
  • Friedman’s response: After analyzing nearly a century of statistical data in his work with Anna Schwartz, Friedman demonstrated that the velocity of money fluctuated predictably in the long run in relation to permanent income. He argued that the real historical danger was not the rigidity of a rule, but the discretion of central bankers. For him, governments’ attempts to “fine-tune the economy” through constant manipulations usually worsened cycles due to inevitable time lags (between detecting the problem, implementing the measure, and it taking effect).

2. Epistemological Critiques and from the Austrian School

Methodological positivism and acceptance of the Central Bank

  • The critique: Thinkers from the Austrian School (such as Murray Rothbard) launched harsh critiques against Friedman on two fronts:
  • Methodology: They criticized his positivist and empirical approach. For Austrians, economics is governed by a priori logical axioms (praxeology); they considered that attempting to measure human behavior through statistical aggregates or macroeconomic equations stripped economics of its human essence.

  • The money monopoly: They reproached him for not defending the total abolition of the Central Bank or a return to the gold standard. They considered that Friedman’s proposal to maintain a Federal Reserve coercively controlling fiduciary money was still a form of central planning that would cause distortions in relative prices (Cantillon Effect).

  • Friedman’s response: Friedman firmly defended the traditional scientific method: he maintained that the validity of an economic theory does not depend on the “realism” of its initial assumptions, but on its predictive capacity and its contrast with empirical evidence. Regarding central banking, Friedman considered himself a pragmatist. Although he theoretically sympathized with the idea of a free market in currencies, he believed that dissolving the Federal Reserve was a politically unviable utopia in the short term; therefore, tying the hands of the Central Bank with an automatic rule was the most realistic and efficient solution to prevent bureaucrats from destroying the value of the currency.

3. Political and Ethical Critiques

The Chile controversy and the Pinochet dictatorship

  • The critique: He was accused of moral and ideological complicity with Augusto Pinochet’s military dictatorship in Chile. This critique intensified due to a brief visit he made to the country in 1975, where he met with the dictator, and the fact that the main Chilean economic reformers (the Chicago Boys) were his direct disciples from the University of Chicago. His detractors claimed that the radical free-market model could only be imposed through violent state repression.
  • Friedman’s response: Friedman always defended that his participation in Chile was strictly academic, technical, and equivalent to neutral medical assistance: "A doctor who gives technical advice on how to combat an epidemic to a dictatorial government is not endorsing the dictatorship." In addition, he developed a profound political philosophy argument in his book Capitalism and Freedom: he maintained that economic freedom is a necessary but not sufficient condition for political freedom. He prophetically argued that free-market reforms would decentralize power, create a middle class independent of the State, and ultimately undermine the power base of the dictatorship itself, forcing the return of democracy (a phenomenon he baptized as “The Miracle of Chile”).

4. Social and Corporate Critiques

The amorality of the market and corporate social responsibility

  • The critique: In 1970, Friedman published a famous article in The New York Times in which he stated that “the only social responsibility of business is to increase its profits.” Philosophers, unions, and social-democratic sectors accused him of promoting savage, selfish, and dehumanized capitalism that deliberately ignored the well-being of workers, local communities, and environmental impact.
  • Friedman’s response: Friedman argued that his position was, in reality, the only one compatible with a truly democratic and free society. He explained that corporate executives are employees of the shareholders (the legitimate owners of the property). If an executive decides to spend company money on social causes that do not maximize profit, they are acting illegitimately: they are unilaterally levying a “tax” on shareholders (or on consumers via higher prices) and arbitrarily deciding how to redistribute that wealth, a legislative function that only belongs to representatives elected by citizens in the State. For Friedman, the true social responsibility of individuals is exercised in the private sphere through voluntary philanthropy, not by using other people’s money through corporations.

Summary Table: Ideological Clashes

Type of Critique Main Critic Argument Against Friedman’s Defense
Macroeconomic Keynesians The velocity of money is unstable; fixed rules cause crises. Discretionary government interventions are what aggravate economic cycles due to time lags.
Methodological Austrian School The use of macroeconomic data and statistics dehumanizes economics and legitimizes the Central Bank. Theories should be judged by their predictive success. Controlling issuance through a rule is the most pragmatic solution.
Political / Ethical Political Left His technical advice to Chile linked the free market with the oppression of a dictatorship. His advice was purely technical. Economic opening empowers citizens and ultimately destroys political tyranny.
Social Social Democracy Saying that companies should only seek profits promotes greed and harms society. Executives have no legitimacy to spend shareholders’ money on social ends. The free market allocates resources optimally.

Summary of His Impact

Milton Friedman permanently changed global understanding of economic cycles, inflation, and the limits of state intervention. His genius lay in combining the most rigorous econometric analysis with magnetic communication skills, bringing classical liberal ideas down from pure theory and turning them into the engine of the great institutional reforms of the contemporary modern world.

This article is part of the Basic Course on Liberalism -> Module 4: Main Schools of Economics

Previous Topic Next Related Topic
<- Robert Nozick (1938-2002) (He was a philosopher, not an economist) <---> Optional reading for Module 4 ->

Categories : Home -> Economics

Last version : 2026-05-16

|Facebook | Instagram |X |