This 2-Volume collection published by Dover wonderfully exhibits Leonardo's works with his sketches, designs and ideas. If you ever wondered what Leonardo thought, then these are the books to get. The book is set up with the text in two columns; the left in the original Italian, and the right side in the translated English. In those words are written of Leonardo's philisophical ideas, lives of where he lived and his surroundings, his theories on color, perspective, proportion, architecture, foliage, physiology and so many other things that the Great One was curious about. Througout the book and amidst the text are Leonardos sketches, thumbnail sketches, workings of famous pieces such as the Last Supper, some anatomical drawings - and in those pages you can see Leonardo's handwriting which he tended to write backwards. The value and reference is endless, especially for the artist. This edition is reprinted from the 1833 version originally entitled "Literary Works of Leonardo Da Vinci." This is a 2-volume set, which is sold seperately, but for the price, it is so worth the money. Highly reccomended!