Akira: We learn karate, so that we need never use it.

Akira: We learn karate, so that we need never use it.
Bart: Um, excuse me, sir. I already know how not to hit a guy.
Can we break out the nunchucks?
Akira: Ah yes, the impetuousness of youth. For now, let us read...
Bart: Akira, my good man, when do we break block of ice with our heads?
Akira: First, you must fill you head with wisdom, then you can hit ice
with it.
Bart: Yo, sensei. Can I go to the bathroom?
Akira: You can if you believe you can.
Bart: [leaving] Pay money to read books, pffft. The hell with this!
-- Karate school, "When Flanders Failed"