The Richest Man in Babylon

Clason was not an economist or a banker. He owned a map publishing company that, in the 1920s, was hired by banks and insurance companies in the United States to create educational pamphlets. He discovered, in practice, something that formal financial education still gets wrong: nobody changes their behavior because of a compound interest table, but almost everyone remembers a good story.

That's why he set his advice in ancient Babylon, with characters like Arkad and Bansir, instead of writing an ordinary personal finance manual. Almost a century later, the engine is the same. From "Rich Dad Poor Dad" to short videos about the "50/30/20 rule," the packaging changes, but it's always a fable carrying a simple rule.

It's also worth noting the context in which he wrote: the United States of the 1920s was in a boom of buying on credit, with ordinary people purchasing refrigerators and cars on installment plans for the first time in history. The banks that commissioned Clason's pamphlets wanted customers who knew how to manage money, not just take out loans. That commercial interest accidentally produced one of the most enduring financial education texts ever written.

The central idea of the book is trivial in theory and rare in practice: set aside a portion of what you earn BEFORE paying any bill, and treat that amount as a mandatory debt, not as whatever is left over at the end of the month. Most people do the opposite: they pay everything, and if something is left, they save it. Leftovers almost never exist.

Think of someone who gets paid through Venmo or Zelle by clients, like a rideshare driver or a self-employed hairdresser. If she sets aside 10% as soon as the money lands, before deciding what to spend that day, the habit becomes automatic in a few weeks. If she waits to "see what's left at night," almost always nothing is left, not because she earned too little, but because the order of her decisions was reversed.

The detail that often goes unnoticed is that 10% is not a magic number. It's just big enough to sting a little and small enough not to break anyone's budget. Someone who earns very little can start with 5%. What matters is that the habit of setting aside first exists, not the exact percentage in the first month.

The book separates necessary spending from spending that a person CONVINCED themselves was necessary. It's an uncomfortable distinction, because almost every impulse purchase comes with a ready-made justification in your head: "I deserve it," "just this once," "I'll pay less later."

A more useful exercise than any spreadsheet is to write down, for one week, every time you think one of these phrases before buying something. Not to blame yourself, but to see the pattern: usually it's three or four triggers that repeat, like tiredness, comparing yourself to someone on social media, or boredom. Attacking the trigger works better than cutting out an entire spending category.

Clason also insists on an idea that sounds harsh: the problem is almost never earning too little, it's automatically spending every raise that comes in, keeping your standard of living always pressed against the limit of what comes in. Someone who gets a raise and immediately increases their spending in the same proportion will never feel like they have money left over, no matter how much they start to earn.