average human “looks without seeing, listens without hearing, touches without feeling, eats without tasting, moves without physical awareness, inhales without awareness of odour or fragrance, and talks without thinking.

He turns not back who is bound to a star.

It's not enough that you believe what you see. You must also understand what you see.

You can have no dominion greater or less than that over yourself.

I woke up only to find the rest of the world asleep.

Many have made a trade of delusions and false miracles, deceiving the stupid multitudes.

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.