The Codex Leicester May 2026

That Leonardo lives in the Codex Leicester .

Leonardo said: No.

In 1994, the Microsoft founder paid for the manuscript at a Christie’s auction. That’s roughly $500,000 per page. At the time, it was the most expensive book ever sold. (Gates later had it scanned into a digital format for Windows 95 CD-ROMs—a perfect marriage of Renaissance curiosity and digital futurism). Water: The Star of the Show What did Leonardo obsess over in these 72 pages? Water. the codex leicester

In one paragraph, he jumps from the flow of a river to the cratering of the moon to the growth of a tree. He saw no barrier between art, science, and nature. To him, the curl of water in a fountain followed the same mathematical rules as the curl of hair on a human head. You don’t need $30 million to think like Leonardo. You just need a notebook and a willingness to ask dumb questions.

And 500 years later, we are still listening. Have you ever tried mirror-writing? Would you pay $30 million for a used notebook? Let me know in the comments below! That Leonardo lives in the Codex Leicester

But there is another Leonardo. A Leonardo of obsessive curiosity, of messy reverse-script handwriting, and of questions so vast they stretched the limits of 16th-century science.

The name "Leicester" comes from a later owner, the Earl of Leicester, who bought it in 1717. But its most famous modern owner? . That’s roughly $500,000 per page

Leonardo was left-handed, and it’s believed he wrote this way to avoid smudging wet ink as his hand dragged across the page. To read it, you literally have to hold the page up to a mirror.