Look, I'm just not ready to ask Lorraine out to the dance, and not you, or anybody else on this planet is gonna make me change my mind.
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.
What if I send in the tape and they don't like it? I mean, what if they say I'm no good? What if they say, "Get outta here, kid. You got no future"? I mean, I just don't think I can take that kind of rejection. Jesus, I'm starting to sound like my old man!
George McFly: You really think I ought to swear?Marty McFly: Yes, definitely. Goddamn it, George, swear.