It is an acknowledged fact that we perceive errors in the work of others more readily than in our own.

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.

Of the original phenomena, light is the most enthralling.

The part always has a tendency to reunite with its whole in order to escape from its imperfection.

When you look at a wall spotted with stains...you may discover a resemblance to various landscapes, beautiful with mountains, rivers, rocks, trees. Or again, you may see battles and figures in action, or strange faces and costumes, and an endless variety of objects which you could reduce to complete and well-drawn figures.

The painter will produce pictures of little merit if he takes the works of others as his standard.

Good writing comes from good talent.