From Su Shi's "Crafty Mouse Fugue", the original text reads, "You only learn more and know, looking at the road and not yet seen, not one in you and two in the thing, so a mouse rodent and for the change."

Knowledge: to know, to understand.

Dao: the origin and essence of everything in the universe. It can also refer to things; laws.

Translation: You have only learned a lot and know a little bit, but you are still looking at the Tao but cannot see it (meaning that you are still far from mastering the laws of things).