Furuya Sensei posted this to his Daily Message on May 10, 2003.
In our view, we tend to think “knowing” and “doing” are the same functions but in Japanese traditional martial arts, they indeed are not. "Knowing" something does not mean we can “do” it, and vice versa. We understand them separately and eventually bring them together to create “true knowing.” “Knowing” something, but not being able to accomplish it (“do”) is not considered “knowing” it at all.