The Notebooks Of Leonardo Da Vinci 

The Notebooks of Leonardo da Vinci  1883 [. Prolegomena and General Introduction to the Book on Painting. Let no man who is not a  Mathematician  read the elements of my work. Tristo è quel discepolo che non avanza il suo maestro.  . Whoever in discussion adduces  authority  uses not  intellect  but rather  memory. The eye — which sees all objects reversed — retains the images for some time.  . Linear Perspective. A point is not part of a line. Nothing is that which fills no space.  . The point , being indivisible , occupies no space. That which occupies no space is nothing.  . That which has no limitations , has no form.  . The boundaries of bodies are the least of all things.  . The body of the atmosphere is full of infinite radiating pyramids produced by the objects existing in it.  . Six books on Light and Shade. Shadow is the diminution alike of light and of darkness , and stands between darkness and light. Shadow partakes of the nature of universal matter.  . Darkness is absence of light. Shadow is diminution of light. Light is the chaser away of darkness. Shade is the obstruction of light.  . The body which is nearest to the light casts the largest shadow , and why ? .