This definitive translation of Leonardos notebooks brings together into one volume the famous reflections and speculations of the greatest mind of the Renaissance. It is a result of a lifetime of study and research by the outstanding authority on the life and works of the great Florentine. Because of the unique and diverse character of Leonardos achievements, the reissue of The Notebooks is an event of enduring importance in the fields of art, Literature, science and technology.