He's a Peeping Tom!
Read more Marty McFly QuotesFrom: Back to the Future
Dear Dr. Brown. On the night that I go back in time, you will be shot by terrorists. Please take whatever precautions are necessary to prevent this terrible disaster. Your friend, Marty.
Okay. Time circuit's on. Flux capacitor, fluxing. Engine running. All right.
Marty McFly: Damn it, Doc! Why did you have to tear up that letter? If I only had more time.Marty McFly: Wait a minute. I got all the time I want. I got a time machine! I can just go back early and warn him.