When Daniel asks how he knows the Bonsai tree image in his head is correct, Mr. Miyagi replies with this Karate Kid quote. It is his way of saying that Daniel needs to be happy with himself ...

Mr. Miyagi teaches Daniel-San karate and life lessons in the "Karate ... And while we're here, why is it so damned hard to find a good bonsai tree? And why can the simple phrase "Ay!

John Kreese, his life in tatters after his karate school was defeated by Daniel ... funds to realize Miyagi's dream of opening a bonsai tree shop, and becomes a partner in the bonsai business.