The Convicted Duelist Who Invented Paper Money (and the Word “Millionaire”)

On an April morning in 1694, two men met in Bloomsbury Square, London, to settle a quarrel with swords. One of them, a dandy named Edward “Beau” Wilson, died on the spot. The other was a tall Scottish gambler named John Law.

Law was convicted of murder. He escaped from prison before the sentence could be carried out, slipped across the Channel, and vanished into the casinos of Europe.

Now, most fugitive duelists disappear from history at this point. Law does not, because Law was not an ordinary gambler. He played the tables the way an actuary reads a mortality chart. He calculated odds while other men drank and guessed, and he won steadily enough to live well in half the capitals of Europe. Along the way he spent years in Amsterdam, then the most sophisticated financial city on earth, watching how the Dutch used banks, credit, and paper claims to run a trading empire that dwarfed what their tiny country should have supported.

Somewhere between the card tables and the Amsterdam exchange, Law developed an idea he would carry for the rest of his life. Money, he argued, should not be a hoard of scarce metal. It should be a tool for putting people and goods to work. A kingdom short of coins was like a mill short of water. Supply the water and the wheel turns.

It is a seductive idea, and most of the modern world now runs on some version of it. But notice what it quietly concedes. Money that can be created at will is money that can be created for whoever holds the pen, and the cost of that creation is paid by everyone already holding the old money, in prices they never agreed to and never voted on. That is a tax. It is simply a tax nobody has to legislate, and nobody has to defend at an election.

France was about to demonstrate the whole arrangement in miniature, at speed. So the trouble was not only what one man did with the idea. Some of the trouble was in the idea, waiting.

A kingdom in need of a miracle

In 1715 Louis XIV died after seventy-two years on the throne, leaving France gloriously decorated and financially ruined. Decades of war had buried the crown in debt. Taxes had been squeezed as far as they would go. Default meant humiliation and ruin. The new ruler, the Duke of Orléans, was not king but Regent, governing on behalf of a five-year-old, and he needed a miracle at a price the treasury could afford.

John Law arrived with one under his arm.

In May 1716 the Regent let Law open the Banque Générale, a private bank issuing paper notes redeemable in gold and silver coin. It was a modest start and an honest one. The notes were sound, they were convenient, and they soon traded at a premium to the battered coinage. In 1717 the government decreed that Law’s notes could be used to pay taxes. Confidence grew. Commerce stirred, just as Law had promised.

Then the modest experiment began to eat everything around it.

Law launched a trading venture, the Company of the West, to develop France’s vast Louisiana territory, and its shares were priced at 500 livres. In December 1718 the bank received the royal seal and became the Banque Royale, in effect France’s first central bank. Through 1719 the company swallowed the East India and China trading companies, the tobacco revenue, the mint, and the right to collect France’s taxes. Finally it took over the national debt itself.

Stand back and look at what had assembled. One man now directed the institution that printed France’s money, the company that dominated its overseas commerce, the collection of its taxes, the coining of its metal, and the management of its debt. The historian Niall Ferguson puts it in terms a modern reader can feel:

“It was as if one man was simultaneously running all five hundred of the top US corporations, the US Treasury and the Federal Reserve System.”

Nobody had ever held that much financial power. Nobody has since.

The year of the millionaire

What followed was the most spectacular boom Europe had ever seen.

Louisiana was advertised as a garden of plenty, rich in silver and welcoming to settlers. The reality was a sweltering, insect-infested swamp. Of the few thousand German colonists recruited to go, Ferguson notes, roughly 80 percent were dead within a year of arrival, from starvation and yellow fever. Paris did not dwell on this. Paris was watching the share price.

And the share price was a marvel, because Law had connected it to his printing press. From the summer of 1719 the Banque Royale allowed shareholders to borrow freshly printed notes against their shares, money they could then use to buy more shares. The company paid dividends of 40 percent, a payout that Louisiana, which produced almost nothing, could not remotely justify. The System sustained itself the way it did everything: with fresh paper. Shares that started at 500 livres reached 2,750 by the first of August 1719, 4,100 by the end of that month, and 5,000 four days later. In the autumn they passed 9,000. On December 2 they touched 10,025 livres, and in the informal futures market, contracts changed hands at 12,500 for delivery in March.

Fortunes appeared overnight, in a form France had never seen: not land, not title, just paper multiplying on paper. The French language had to mint a new word for the people it created. As Ferguson observes, like entrepreneurs, millionaires were invented in France.

It is easy, three centuries later, to smile at all this. Resist the urge. Walk through the reasoning of a Parisian in 1719. The scheme had the Crown’s full blessing. The bank’s notes had been sound for three years. The shares had risen relentlessly for two. Everyone around him who had bought early was rich, and the man running the system was, by general agreement, the most brilliant financier alive. Our Parisian was not a fool. He was reasoning sensibly from what he could see. What he could not see was that the price he trusted was being manufactured by the same institution that printed the money he trusted.

That is the quiet lesson at the center of this story. Every actor behaved rationally. The Regent wanted relief from an impossible debt. Law believed his theory completely, and kept his own fortune inside the System to prove it. The investors followed prices that a royal bank stood behind. No one in the chain had both the power and the incentive to say no. Absolutist France had no parliament with teeth, no rival bank, no committee, no dissenting vote. The machine had an accelerator and no brakes.

February 1720: the month the exit closed

Machines like that reveal themselves on the way down.

In mid-December 1719 the share price slipped to 7,930. Law responded by opening a bureau at the Banque Royale that guaranteed to buy shares at a floor of 9,000 livres. Think about what that means: the money printer was now committed to printing whatever it took to hold up the asset. In little more than a year, Law more than doubled the volume of paper currency in France. By May 1720 the total money supply, counting notes and shares that could be cashed at will, was roughly four times the gold and silver coinage France had used before.

The paper had to go somewhere, and it went into prices. By their peak in September 1720, prices in Paris had roughly doubled in two years, with most of the rise packed into the final eleven months. Sensing the ground shifting, people began doing the obvious thing. They took their notes to the bank, exchanged them for gold and silver, and quietly headed for the exits.

Then came February 1720, the month that earns this story its place in every monetary history since. On February 22 the Company formally took over the Banque Royale, fusing the printing press and the asset into a single legal body. Five days later, by decree of February 27, it became illegal for a private citizen of France to possess more than 500 livres in metal coin. The authorities were empowered to search houses to enforce it. Gold, the thing people were fleeing to, was effectively outlawed. Law spent the spring frantically adjusting the machinery, changing the official price of gold twenty-eight times in his efforts to keep the system upright.

Voltaire called the coin decree “the most unjust edict ever rendered” and “the final limit of a tyrannical absurdity.”

Notice what had happened to our sensible Parisian. He had followed the rules at every step. And then, overnight, the rules changed, written by the very institution that had sold him the shares and printed his money. His exit was not merely expensive. It was criminal.

It could not hold. Confidence, once commanded, cannot be decreed back into existence. Through 1720 the System came apart, the bank closed its doors, and in December Law fled France for the last time. Here is a detail worth savoring: the architect of the greatest bubble in history did not get out rich. Law left France with almost nothing, undone in part by a side wager with a London lord that East India stock would fall. He spent his last years back at the card tables and died in Venice in 1729, still convinced, by most accounts, that his System had been sound and only its execution flawed. Ferguson argues the episode left scars far beyond Law: France soured on paper money and banks for generations, and the crown’s finances, never repaired, staggered on toward revolution.

Was Law a genius after all?

Now for the strongest objection to everything I have just said, which deserves a fair hearing rather than a dismissal: that John Law was essentially right, and merely early.

Modern scholars, most notably Antoin Murphy, treat Law not as a con man but as a monetary theorist decades ahead of his time. Look at his inventory of ideas. Paper money not backed by full metal reserves. A national bank issuing the currency. Government debt managed and restructured through that bank. Every one of these became standard practice in every country on earth. You have lived your entire life inside a system built from John Law’s parts. On that much, his defenders are simply correct.

But adoption is not vindication. That an idea won is not evidence that it was sound; it is evidence that it was useful to the people in a position to adopt it, which is a different thing entirely. Law’s instruments spread because they solve a problem every government has: how to spend more than you can tax without asking permission. The bill does not disappear. It is presented later, quietly, to whoever is holding the money — which is why prices in Paris doubled in two years, and why the savers of 1720 paid for a policy nobody put to them. The compressed French version took twenty-four months. The version most of us have lived through is slower and therefore easier to miss, but it is the same instrument doing the same work.

So was the problem simply that mania is human nature, and any system would have blown up the same way? History ran that experiment for us, in the same year. London’s South Sea Bubble inflated and burst in 1720 alongside the Mississippi. Same mania, same greed, same ruined speculators and bitter poems. But by Ferguson’s reckoning South Sea shares rose 9.5 times from par against 19.6 times for the Mississippi, and the aftermath in Britain was a scandal and a hangover rather than a monetary collapse. The difference was not virtue. John Blunt, the South Sea schemer, never controlled the Bank of England or the money supply, and he operated under a Parliament that could and did investigate him. Britain had brakes. France had Law.

Two bubbles, one year, one lesson. Mania is universal. Catastrophe is institutional.

Which is a lesson about restraint, not an acquittal of the instrument. Britain’s brakes limited the damage of a mania; they did not make unbacked paper harmless, and Britain would spend the following two centuries discovering that for itself. Checks decide how fast the bill arrives. They do not cancel it.

One desk, many desks

Which brings us, briefly, to the present.

The current chairman of the Federal Reserve, Kevin Warsh, is fond of saying that inflation is “a choice.” Whatever you make of the line, notice the premise inside it: somebody chooses. Money is always governed by someone. The only real question, the question Law’s France answered so badly, is how many hands share the power and who can tell whom no. On July 29 of this year the Fed’s committee voted 9 to 3 to hold interest rates steady, with three members publicly dissenting in favor of a hike, the most dissents in nearly a decade. It is tempting to read that as dysfunction. Read it instead as the anti-Law machinery working as designed: power scattered across a committee, disagreement aired in public, decisions made slowly and inconveniently. The system’s designers had seen what one desk with no brakes could do.

And lest we in the United States feel too superior to the French, recall that in April 1933 the American government also ordered its citizens to turn in their gold, by executive order, and shortly afterward revalued it from $20.67 to $35 an ounce. The circumstances were different and the story is for another day. The point is narrower: the power Law wielded in February 1720 is not exotic, and “it could not happen here” is not a monetary principle. Institutions, checks, and dissent are what stand between that power and its abuse. That is why the boring machinery matters. If you read our edition on the Fed’s own hardest lessons, you have already met the two ghosts that machinery was built to keep at bay.

What to do with this story

I promised no investment advice, and there will be none. What the Mississippi Bubble offers instead is a set of questions, and they have aged three hundred years without rusting.

Whenever you place your savings inside any system, ask: who can change the rules, and what happens to my exit if they do? The Parisians of 1720 learned that the answer can change by decree, overnight, and that the referee and the scoreboard were owned by the same man.

And when you find yourself in a rising market, ask where the money fueling it comes from. The Mississippi investor’s fatal error was not optimism. It was borrowing from the same institution whose printing sustained the price of what he was buying. When the lender, the printer, and the seller are one desk, the boom is measuring nothing but the desk’s own output.

One further habit, borrowed from an earlier edition: prices in Paris doubled while those share fortunes were being counted, which is a reminder that inflation can quietly take back what a rising number appears to give.

Neither question requires you to predict anything. They only require you to look at the plumbing before you trust the water.

The man in the mirror

John Law was not a villain. That is what makes him worth remembering. He was brilliant, he was sincere, and he broke a kingdom anyway, because sincerity is not a safeguard and brilliance does not need brakes any less than folly does. The most dangerous financial ideas are rarely the fraudulent ones. They are the ones their architects believe.

Ferguson closes his history of finance with an image worth borrowing. Financial markets, he writes, are like “the mirror of mankind,” revealing us to ourselves every hour of every working day. “It is not the fault of the mirror if it reflects our blemishes as clearly as our beauty.”

France in 1720 looked into that mirror and saw what people always see: hope, greed, ingenuity, and fear, magnified by the machinery around them. The names change, the technology changes, but the underlying pattern is often familiar. The face in the mirror is ours. The machinery, at least, we get to design.