The first object of the painter is to make a flat plane appear as a body in relief and projecting from that plane

That which can be lost cannot be deemed riches.

Make your faces so that they do not all have the same expression, as one sees with most painters, but give them different expression, according to age, complexion, and good or bad character.

A wave is never found alone, but is mingled with as many other waves as there are uneven places in the object where the said wave is produced.

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

He who has access to the fountain does not go to the water-pot.

Any color is more distinctly seen when opposed to its contrary: thus, black on white, blear near yellow, green near red, and so on.