If oxen and horses and lions had hands and could paint with their hands and produce works of art as men do, horses would paint the forms of the gods like horses, and oxen like oxen, and they would make their bodies in accordance with the form that each species itself possesses.

解释：河流川泽中有污水，深山草野中藏有瘴气，美玉也有微小的瑕疵。