The Codex Leicester Instant

And it just so happens to be one of the most expensive books on planet Earth.

Why does water swirl down a drain? Why do mountains look blue in the distance? Why is the sky blue?

If you ever get the chance to see the Codex in person (it travels occasionally), you’ll notice something odd. The text is written in Italian, but it’s backwards—from right to left. the codex leicester

It adds a layer of mystery. You feel like you are decoding a secret message from a time traveler.

You don’t need $30 million to think like Leonardo. You just need a notebook and a willingness to ask dumb questions. And it just so happens to be one

He argued that the fossils were proof that the mountains had once been the beds of ancient seas, lifted up over incredibly long periods of time. He realized the Earth was ancient, shaped by slow, relentless processes like water erosion—not a single catastrophe. This put him centuries ahead of modern geology.

Leonardo said: No.

The Codex Leicester is a collection of scientific writings and drawings created by Leonardo da Vinci in the early 16th century. It is considered one of the most important and fascinating scientific manuscripts of the Renaissance.

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). Why is the sky blue