Of the four elements water is the second in weight and the second in respect of mobility. It is never at rest until it unites with the sea.

All our knowledge has its origins in our perceptions.

Nothing is so much to be feared as Evil Report.

The knowledge of all things is possible

There are many occasions when the muscles that form the lips of the mouth move the lateral muscles that are joined to them, and there are an equal number of occasions when these lateral muscles move the lips of this mouth, replacing it where it cannot return of itself, because the function of muscle is to pull and not to push except in the case of the genitals and the tongue.

Poor is the man who desires a lot

Affective gestures pointing to things near either in time or space should be made with the hand not very far from the body of the person pointing; and if these things are distant, the hand of the painter should be more extended and the face turned toward the person to whom he is addressing the demonstration.