Our body is dependent on heaven and heaven on the Spirit. - Leonardo da Vinci

Perspective 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.

It is easier to contend with evil at the first than at the last.

Experience does not err; only your judgments err by expecting from her what is not in her power.