A Treatise on Painting

This book contains an collection of writings by Leonardo da Vinci. It functions as a reconstruction of da Vinci's views on (the making of) art, since he planned to write a comprehensive treatise on the subject but never did. What I did miss, though, is an introduction that offers some historical background information on da Vinci and the art theory of his days, to put the whole thing into context. Either way, the book is a very nice addition to any art historical library (right next to Alberti's and Cennini's treatises)