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A Kingdom That Created Wealth with Paper, and Was Burned by Paper

A gambler who stabbed a man in a duel and was sentenced to death took control of France's finances. His idea that increasing paper money would stimulate the economy threw the country into a frenzy, eventually leaving long-lasting after-effects.

John Law's Bubble in 3 Minutes

  1. See it
  2. In numbers
  3. What would you do?
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1See it

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1 / 9

1716

France had run out of money from war. That's when John Law's bank was created.

The banknotes could also be used to pay taxes.

2 / 9

From 1717

Law started a company and turned the country's debt into company shares.

The system was designed to support the shares with banknotes.

3 / 9

By the end of 1718

But few ships actually went to sea. The source of wealth was loans to the king and taxes.

12 ships

4 / 9

1719

On a narrow street in Paris, the price of shares skyrocketed.

500 → 5350 livres

A share with a face value of 500 reached this in September. The peak was about 10,000 livres.

5 / 9

End of May 1720

To support the share prices, more banknotes were printed.

2,235,100,000 livres

The balance of banknotes in circulation.

6 / 9

May 21, 1720

The government decided to 'lower the value of notes and shares every month.'

This was the government itself admitting the paper money was losing value.

7 / 9

After that

Trust collapsed. People rushed to the bank, demanding gold coins.

Some people were even crushed in the crowd.

8 / 9

Early December 1720

Law fled the country.

9 / 9

1726

Money went back to being metal. Paper money was hated for a long time.

The stability of metal money lasted for about 60 to 70 years, until the revolution.

2In numbers

20times

A share with a 500 livre face value rose to a peak of about 10,000 livres

Face value500 livres
July1000 livres
August3600 livres
September5350 livres
PeakAbout 10,000 livres

2,235,100,000livres

Balance of banknotes in circulation at the end of May 1720

3What would you do?

It's 1720 in Paris. You have a lot of banknotes. The government announces it will 'lower the value of notes and shares every month.' What do you do?

Pick one

Rush to the bank to exchange them for gold coins.

This is what really happened. People mobbed the banks demanding gold coins. Some were even crushed in the crowd. When the government admitted the paper was losing value, trust collapsed instantly.

Trust the government and hold on to your notes.

The government itself had decided to 'lower the value every month.' The system was set up so the paper you held would be worth less and less. Law fled the country in early December.

4Read more

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2026-10-07 Mitsuru Hayama Stories of money
France — John Law's bubble / Rue Vivienne, Paris

The Frenzy of Rue Quincampoix

Paris's Rue Quincampoix was originally an open-air market in a narrow alley where discounted government bonds were traded. In 1719, it became the center of a frenzy. A share with a face value of 500 livres soared to 1,000 in July, 3,600 in August, and 5,350 in September. The peak was approximately 10,000 livres—a twentyfold increase.

The word "millionaire", too, is French of the eighteenth century. Mackay's book of 1841 tells, as separate anecdotes, of a servant who went to sell shares for his master, pocketed the rise in price and left the country, and of Law's coachman, who earned enough to set up a carriage of his own and left his service. For neither does it give a source. Nevertheless, the wealth that existed there was certainly a wealth counted in paper.

The Gambler's Grand Scheme

The mastermind was the Scottish-born John Law. A skilled gambler well-versed in probability, he had a past in London where he stabbed a man in a duel, was sentenced to death, and fled to the continent. He argued that paper money was superior to metal and that increasing its supply would stimulate the economy.

In a France whose finances were ruined by war expenses, the Regent, the Duke of Orléans, placed his bet on Law. In 1716, the Banque Générale was established, and two years later it became the Banque Royale with state backing. The banknotes could also be used to pay taxes. Law went further in 1717, founding the Western Company, which aimed to monopolize the Mississippi River basin. The heart of this scheme was a debt-for-equity swap, allowing the company's shares to be purchased with nearly worthless government bonds. He converted the national debt into shares and supported it with banknotes. The company swallowed everything from the tobacco monopoly to tax collection, taking control of both colonial trade and the nation's finances.

Paper Wealth Detached from Reality

The foundation of the company's wealth was not the colonies. By the end of 1718, only twelve ships had set sail. The source of its wealth was loans to the king and taxes. The gap between the reality of a swampy Louisiana and the wealth on paper only widened.

So why did it collapse? Law tried to hold the company's share price at a high level, and more and more banknotes were printed to do it. By the end of May 1720, notes outstanding had reached 2,235,100,000 livres. The economic historian François Velde concludes that supporting the shares at so high a level led to uncontrolled money creation.

Collapsed Confidence, and What Remained

On May 21, 1720, the state issued a decree to devalue the notes and shares monthly. This was tantamount to the state itself admitting the depreciation of its paper, and confidence collapsed. People rushed to the bank demanding gold coins, and some were crushed in the stampede. Law, who had been appointed Controller-General of Finances in January of that year, fled the country in early December.

After Law's bubble burst, France was left with long-lasting after-effects. The attempt to replace specie with paper was long held in disrepute. In 1726, the currency returned to metal. The weights of the Louis d'or and the écu were firmly fixed, and this stability lasted for about sixty to seventy years, until the Revolution.

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