Art is the queen of all sciences communicating knowledge to all the generations of the world.

The knowledge of all things is possible

The function of muscle is to pull and not to push, except in the case of the genitals and the tongue.

People reveal themselves completely only when they are thrown out of the customary conditions of their life.

It vexes me greatly that having to earn my living has forced me to interrupt the work and to attend to small matters.

All objects transmit their image to the eye in pyramids and the nearer to the eye these pyramids are intersected the smaller will the image appear of the objects which cause them.

Blinding ignorance does mislead us. O! Wretched mortals, open your eyes!