You have to keep your reflexes so that when you want it — it's there. When you want to move — you are moving. And when you move, you are determined to move! Not accepting even one inch less than 100 percent of your honest feelings. Not anything less than that. So that is the type of thing you have to train yourself into. To become one with your feelings so that, when you think — it is.
p. 126 - The Warrior Within : The Philosophies of Bruce Lee (1996)