Leonardo's Notebooks Are Like Nothing the World Had Ever Seen

Leonardo's notebooks have been rightly called the most astonishing testament to the powers of human observation and imagination ever set down on paper. The more than 7,200 pages probably represent about one quarter of what Leonardo actually wrote. That is a higher percentage after 500 years than the percentage of Steve Jobs' emails and digital documents from the 1990s that he and I were able to retrieve. If you haven't read it, it's amazing. Just go back through your podcast feed and you'll see it.