We will observe first that we are satisfied if an artist is able to represent even to some small extent the earth and mountains and rivers and forests and all of heaven and the bodies that exist and move within it, and render their likeness; and next that, since we have no precise knowledge of such things,we do not examine these paintings too closely or find fault with them, but we are content to accept an art of suggestion and illusion for such things, as vague and deceptive as this art is.