I had been looking for a comprehensive book gathering all Leonardo's drawings of his inventions until now that I found this great book in Milan. By far, more than other books published in the UK and US on the topic, this book organises the unordered collection of Leonardo's drawings of machines and categories them into relevant sections in order to see his visions as well as his development of illustration techniques. But more importantly, it puts Leonardo's so-called 'genius' inventions into historical perspectives so as to understand him as a dedicated learner and researcher of ancient inventions, as well as a curious mind that absorbed knowledge of great people surrounding him.