Johnny Lawrence (to Carmen about Miguel): Please don't close the door. Look, I know I wasn't there for him when it mattered. I let him down. I guess I let you down too. And I know there's no do-overs, but that kid... is the only person in the world who hasn't given up on me. And I don't want to give up on him. I know I messed up big-time, but if you let him come back... I won't fail him again. I promise.
Johnny Lawrence: Are you sure you're ready? 'Cause once you go down this path, there's no turning back.
Miguel Diaz: You're gonna be my karate teacher?
Johnny Lawrence: No. I'm gonna be your sensei. I'm gonna teach you the style of karate that was taught to me: a method of fighting your pussy generation desperately needs. I'm not just gonna teach you how to conquer your fears. I'm gonna teach you how to awaken the snake within you. And once you do that, you'll be the one who's feared. You'll build strength. You'll learn discipline. And when the time is right... You'll strike back.