“knowing is not enough”.

Hal Hartley,
Surviving Desire (1991).

Knowing (Know”ing) a.

1. Skilful; well informed; intelligent; as, a knowing man; a knowing dog. “The knowing and intelligent part of the world.” South.
2. Artful; cunning; as, a knowing rascal. [Colloq.]
Knowing (Know”ing), n.

Knowledge; hence, experience. ” In my knowing.” Shak. “This sore night hath trifled former knowings.” Shak.

Dictionary Information (http://www.selfknowledge.com/53096.htm)