Being engulfed in practice without delicate knowledge related to it, is in many ways like entering a ship without knowing where it is headed.

He who can copy can do.

Every action needs to be prompted by a motive.

Let the painter composing narrative pictures take pleasure in wealth and variety, and avoid repeating any part that occurs in it, so that the uniqueness and abundance attract people to it and delight the eye of the observer. I say that a narrative painting requires (depending on the scene), wherever the eye falls, a mixture of men of diverse appearances, of diverse ages and dress, combined together with women, children, dogs, horses, buildings, fields, and hills.

If you throw a stone in a pond... the waves which strike against the shores are thrown back towards the spot where the stone struck; and on meeting other waves they never intercept each other's course... In a small pond one and the same stroke gives birth to many motions of advance and recoil.

You do ill if you praise, but worse if you censure, what you do not understand.

Truth was the only daughter of Time.