Who They Were
Milton Friedman (1912–2006) was an American economist who revived classical monetary economics and championed free-market capitalism against Keynesian and socialist alternatives. His monetarism—the theory that inflation is always and everywhere a monetary phenomenon—challenged Keynesian focus on fiscal policy and demand management. Friedman argued that the primary role of central banks was to ensure stable monetary growth; beyond that, markets should be left largely free to operate.
Friedman was also a public intellectual and advocate for libertarian policies: limited government, free trade, school choice, and deregulation. His influence on late-20th-century policy—particularly the shift away from Keynesianism toward monetarism and supply-side economics—was substantial.
Early Life and Formative Years
Milton Friedman was born in 1912 in Brooklyn, New York, to immigrant parents. He was educated at Rutgers University and the University of Chicago, where he studied economics under Jacob Viner and Frank Knight. He was influenced by the Chicago School of economics, which emphasized free markets and skepticism toward government intervention.
Friedman worked for the U.S. government during World War II, contributing to tax policy. He then joined the University of Chicago faculty in 1946, where he remained for three decades. During the 1950s and 1960s, he developed monetarism and published influential work on monetary history.
Core Contribution
Friedman's core contribution was the rehabilitation of monetary economics and the critique of Keynesianism. In his Monetary History of the United States (with Anna Schwartz, 1963), Friedman argued that the Great Depression was caused not by collapsed demand (as Keynes argued) but by monetary contraction. The Federal Reserve allowed the money supply to collapse by 30% between 1929 and 1933. If the Fed had maintained monetary growth, the depression would have been far less severe.
This reframing shifted responsibility from demand management to monetary management. Friedman argued that the Fed's primary duty was to ensure stable monetary growth. He proposed a simple rule: the money supply should grow at a fixed rate (perhaps 3–5% annually) regardless of economic conditions. This steady monetary growth would provide stability without the distortions of discretionary policy.
Friedman also articulated the expectations-augmented Phillips Curve, arguing that inflation expectations matter. A policymaker cannot permanently trade off inflation for unemployment; once expectations adjust, attempts to reduce unemployment through inflation will only generate higher inflation without lower unemployment. This insight was crucial in explaining stagflation in the 1970s and undermining Keynesian policy consensus.
Impact and Legacy
Friedman's influence grew dramatically in the 1970s, when stagflation seemed to validate his criticisms of Keynesianism. The election of Ronald Reagan (1980) and Margaret Thatcher (1979) brought monetarist and supply-side economics into practice. Central banks, particularly the Federal Reserve under Paul Volcker, adopted monetarist principles, prioritizing inflation control over employment.
Friedman's libertarian advocacy also influenced policy. Deregulation movements, school vouchers, and opposition to government programs drew intellectual support from Friedman's work.
Criticism and Controversies
Friedman's monetarism proved too rigid. Central banks found that targeting monetary growth was not feasible because the relationship between money and inflation was unstable. They shifted to targeting inflation directly and managing interest rates.
Second, Friedman's blame for the Great Depression on monetary contraction is disputed. Critics argue that the financial system's collapse was the primary cause; monetary policy was secondary.
Third, Friedman's faith in free markets sometimes minimized real problems. Markets do fail; monopolies arise; externalities exist. His solutions (often market-based) work in some cases but not others.
Why They Matter Today
In 2026, Friedman remains influential in central banking and macroeconomic policy. The focus on inflation control, the skepticism toward discretionary fiscal stimulus, and the emphasis on monetary rules descend from Friedman. However, the post-2008 crisis resurgence of Keynesian thinking, and the post-COVID inflation, have made Friedman's strict monetarism seem insufficient. Modern policy attempts to integrate monetarist insights (inflation matters; expectations matter) with Keynesian demand management.
Friedman's libertarian arguments also persist in policy debates about regulation, government intervention, and the role of markets. Whether one agrees with his conclusions, Friedman shaped how economists think about monetary policy and the proper scope of government.