The water which rises in the mountains is the blood which keeps the mountain in life.
Leonardo da VinciPerspective is nothing more than a rational demonstration applied to the consideration of how objects in front of the eye transmit their image to it, by means of a pyramid of lines. The Pyramid is the name I apply to the lines which, starting from the surface and edges of each object, converge from a distance and meet in a single point.
Leonardo da VinciThere is no higher or lower knowledge, but one only, flowing out of experimentation.
Leonardo da Vinci