Fragment 11

11. There are two kinds of knowledge: one legitimate, the other illegitimate (or obscure). To the latter belong sight, hearing, smell, taste, and touch. The genuine kind stands apart from these. When the illegitimate kind reaches its limit—when it can no longer see more precisely, nor hear, smell, taste, or perceive through touch—and a subtler inquiry is required, then the legitimate kind intervenes, possessing an instrument for finer discrimination.