Why was gold money for thousands of years?
- Money didn't start with gold. It started as a record of who owed what, written on clay.
- Gold made those promises checkable between strangers, which is why it won for so long.
- But gold was always the anchor, not the money itself. What made money work was the next person accepting it.
Five thousand years ago in Mesopotamia, in cities like Ur, scribes pressed marks into wet clay: this farmer owes that temple so much barley, payable after the harvest. These tablets are some of the oldest writing we have, and much of it is about debt.
You've probably heard that people first bartered, a goat for some bread, until someone invented coins. It's a nice story, but barter has a problem: it only works if both people have what the other wants, at the same moment. The farmer needs shoes in spring, and his grain only comes in at harvest. So he says: I'll pay you later. And the moment someone says that, you don't have barter anymore. You have a debt, and someone has to write it down. Barter happened, between strangers or when money broke down, but no society has been found that ran on it.
Money began as a ledger. And a ledger works well, even over long distances, as long as you can trust whoever keeps it. With strangers, you need a guarantee. That's where metal came in.
Metal makes promises checkable
At first, the metal wasn't even shaped. In Mesopotamia, people weighed out silver, and the shekel was a weight before it was a coin. The habit stuck around for a very long time. The British pound got its name because it was, originally, a pound of silver.
Around 600 BC in Lydia, in today's Turkey, someone had a simpler idea: stamp a standard piece of metal so nobody has to weigh it every time. The coin was born.
Why gold and silver, and not iron or copper? Go back to the five traits in "What makes a good store of value?" Iron rusts. Copper is too common, so you'd need a cartload to buy a horse. Gold never tarnishes, there's little of it, it's easy to recognize, and a small coin can hold a lot of value. Silver came close, and for everyday trade it was often used more than gold. But for storing large amounts over a long time, gold kept winning.
The promises come back
Gold solved trust, but it created a new problem: it's heavy. As trade grew across Europe in the 1300s and 1400s, carrying chests of coins over mountains and seas meant slow journeys and robbers on the way.
Italian bankers found the fix, and it was the old idea again: a written promise. A merchant in Florence would hand his gold to a bank like the Medici's, and get a letter in return, a bill of exchange. He'd carry only the letter to Bruges or London, where the Medici branch would pay him out. The Medici even had a branch in Geneva. The gold barely moved. The promises traveled.
The word bank itself comes from the Italian banco, the bench where these money changers worked.
So money had come full circle: back to a record of who owes what, but now with gold standing behind it as the guarantee. And the thread is the same as with salt and mackerel. Money is whatever the next person will accept. Gold made people accept it more easily, but it was never the point.
Paper and the gold standard
Paper money grew out of the same trick. In 17th-century London, people left their gold with goldsmiths for safekeeping and got a receipt. Soon people started paying each other with the receipts instead of fetching the gold. Those receipts became banknotes: a piece of paper that said, in effect, the bearer can come and collect this much gold.
By the late 1800s, most big economies had tied their currencies to gold at a fixed price. That was the gold standard. Since nobody could print gold, prices over the long run stayed surprisingly stable. In Britain, prices just before the First World War were roughly where they'd been a century earlier. Your grandparents' advice to just save came from a world like that.
But stable over a lifetime didn't mean calm year to year. When gold was scarce, prices fell, debts got heavier, and farmers and borrowers suffered. Banking panics were common. And since the money supply was tied to how much gold you had, a government couldn't easily print its way out of a crisis. Some see that as a flaw, others as the whole point. Either way, it's why the world eventually moved to the system we have now. Instead of money being limited by a metal, central banks steer it, deciding interest rates and how much money flows. Under gold, money policy happened to you. Today, someone runs it.
Wars, and 1971
Gold had one more limit, and it's the one governments liked least: wars. Under gold, a government at war had to raise taxes or borrow, and both hurt right away. So when the big wars came, countries usually suspended gold first. Britain did during the Napoleonic wars. Almost everyone did in 1914.
After the Second World War, a softer version came back. Other currencies were tied to the dollar, and the dollar was tied to gold at $35 an ounce. But in the 1960s the US was paying for the Vietnam War and big programs at home, and dollars piled up abroad faster than the gold behind them. On August 15, 1971, President Nixon closed the gold window. After that, no major currency could be swapped for gold anymore. A few countries kept a partial link for a while, each at its own pace. Switzerland was the last: until 2000, Swiss law still required part of its banknotes to be backed by gold. Since then, no country's money has been tied to gold at all.
That freedom is real, and it cuts both ways. It lets central banks respond to a crisis like 2008 or the pandemic. But it also lets governments spend now and pay later, through prices that rise for everyone. It feels good while it's happening. The bill comes later, and it's quiet. Most people never connect the two. The pandemic is the clearest recent example.
Isn't this a bit unfair?
Partly, yes. When money is created to pay for something today, the cost is spread over everyone through rising prices. But not evenly. People who own houses, shares, or gold tend to see those rise too. People living on wages and savings feel the prices first, and their pay catches up later, if at all. Nobody voted for that bill. It just arrives.
But knowing this changes how you look at your money. Gold isn't magic, and the old system had real problems. The point isn't to go back. It's to understand that your money is a promise, and to ask what stands behind it.
Who holds the pen
From clay tablets to bills of exchange to banknotes, money has always been a record of who owes what. Gold's job was to make that record hard to cheat. Today that job belongs to central banks and to rules people wrote, and can rewrite. That doesn't make today's money bad. It means it's worth knowing who holds the pen.