The basic science of the money supply hasn’t changed in the last half-century.
The basic science of the money supply hasn't changed in the last half-century.
N icolaus Copernicus (1473–1543) is remembered for proving that Earth’s place was not in the center of the universe. He deserves equal credit for a quieter revolution: figuring out, five centuries ago, why bad money crowds out good.
On the Minting of Money, newly translated by Gerald Malsbary and edited by Ralph Benko, is a short treatise with a long afterlife. Copernicus wrote it as a practical memo to the Polish king — a problem-solver’s brief, not a philosopher’s treatise. Yet, in working through a local policy problem, he stumbled upon something permanent: People respond to incentives. Degrade the coin, and citizens will spend the new, inferior version while quietly stashing the superior one. Trade slows. Savings erode. The economy gradually drains of reliable money, and the government is left wondering why confidence has collapsed.
We now call this Gresham’s Law, honoring the Tudor financier who articulated the principle decades after Copernicus put it on paper. The attribution was always a little unfair to the astronomer.
What strikes a modern reader is not the antiquity of the insight, but its continuing freshness. Copernicus was operating in a world of silver coins and royal mints, yet his argument anticipates every American inflation debate, from Revolutionary War continentals to the era of quantitative easing. The mechanism he identified — government-sanctioned currency debasement quietly redistributing wealth from savers to debtors — is the same mechanism Milton Friedman spent a career explaining to reluctant governments and skeptical publics. The technology changes. The monetary temptations do not.
Central to Copernicus’s argument is a claim that should resonate in any period: Money is not merely a token issued by the state. It is a social institution that rests on confidence. Rulers who treat the currency as a revenue source — shaving coins of their metal, printing paper with nothing behind it — are not just making a technical error. They are consuming the trust of everyone who holds that money, spending a resource they did not earn. Short-term fiscal convenience purchases long-term economic damage.
That insight connects Copernicus directly to Hayek’s later argument about dispersed knowledge: Central authorities rarely possess enough information to manage complex systems well. When a government manipulates its currency, it is not simply adjusting a price. It is distorting every price, corrupting the signals on which billions of economic decisions depend. Copernicus did not have the vocabulary of modern economies, but he was watching the same phenomenon from the ground floor.
Malsbary’s translation earns its keep. Renaissance economic writing tends toward the scholastic and airless; this reads as a direct argument. Benko’s editorial apparatus situates the work within the longer history of monetary thought, with a sympathetic treatment of hard-money principles that some readers will share and others will contest. Copernicus’s core argument survives either position. Whether you favor gold, fiat, or something in between, the underlying logic holds: Money that cannot be trusted will not be trusted. The impoverishing consequences follow with depressing regularity.
The relevance is not merely academic. Kevin Warsh, confirmed in May as the 17th Chair of the Federal Reserve, has called for what he terms “regime change” at the central bank — not dismantling it, but reimposing limits on money creation. The Fed’s balance sheet expanded from roughly $900 billion before the 2008 financial crisis to nearly $9 trillion at its 2022 peak. Officials called the resulting inflation “transitory” well into 2021, even as annual CPI climbed to 9.1 percent by June 2022 — the highest in four decades. Copernicus would have recognized the pattern: an institution that had convinced itself the rules applied to everyone but itself. Warsh’s appointment is a bet they apply to the Fed, too.
The treatise is brief, occasionally repetitive, and makes no claim to theoretical completeness. Those are features, not defects. Copernicus was not building a system; he was solving a problem. The compression forces clarity. Five hundred years of monetary innovation have not found a way around the incentive structure he described in a few thousand words to a Polish king who didn’t listen.
That’s the quiet achievement this edition celebrates. And the implicit rebuke it delivers to every monetary authority that has convinced itself the old rules no longer apply.