Many believe that Leonardo Da Vinci was a science prophet so they is no surprise that one of the richest men of our time, Bill Gates spent $30 Million on just one of his books. You may be asking right now Bill gates would spend such a tremendous amount on just a 72-paged document made of paper.
The Codex Leicester by Leonardo da Vinci is considered the world's most expensive book. Written between 1504 and 1508 AD, this historical book was published in 1510. This book is a scientific journal written by Leonardo da Vinci. Billionaire Bill Gates bought this science journal at an auction in New York City in 1994 for $ 30.5 million (US $ 30,802,500) at the famous Christie's Company.