Biff Tannen: Go ahead, kid! Jump! A suicide will be nice and neat.
Marty McFly: What if I don't?
Biff Tannen: Lead poisoning.

Doc: However, the destruction may be very localized; limited to merely our own galaxy.
Marty McFly: Well that's a relief.

Doc: They're taking her home, to your future home! We'll arrive shortly thereafter, get her out of there and go back to 1985.
Marty McFly: You mean, I'm going to see where I live? I'm gonna see myself as an old man?
Doc: No, no, no Marty, that could result in a... Great scott! Jennifer could conceivably encounter her future self! The consequences of that could be disastrous!
Marty McFly: Doc, what do you mean?

Marty McFly: I don't understand this, Doc. How can this be happening? It's like we're in Hell or something.
Doc: No, it's Hill Valley. Although I can't imagine Hell being much worse!

Marty McFly: The 'Sports Almanac'. Son of a bitch stole my idea! He must have been listening when I... It's my fault! The whole thing's my fault. If I hadn't have boughten that damn book, then none of this would have ever happened.
Doc: Well, forget it Marty. That's all in the past.
Marty McFly: You mean the future.
Doc: Whatever! It demonstrates precisely how time travel can be misused, and why the time machine must be destroyed, after we straighten all of this out.

Dr. Emmett Brown: Oh, my God, they found me, I don't know how, but they found me. Run for it Marty!
Marty McFly: Who? Who?
Dr. Emmett Brown: Who do you think? The Libyans.
Marty McFly: Holy shit!

Dr. Emmett Brown: I suppose Jane Wyman is the First Lady!
Marty McFly: Whoa! Wait! Doc!
Dr. Emmett Brown: And Jack Benny, the Secretary of the Treasury.
Marty McFly: Doc, You gotta listen to me.
Dr. Emmett Brown: I've had enough practical jokes for one evening. Good night, Future Boy!

Mr. McFly! Mr. McFly, this just arrived. Oh, hi, Marty. I think it's your new book.

Biff Tannen

Marty McFly: Where are we? When are we?
Doc: We're descending towards Hill Valley, California, at 4:29 pm, on Wednesday, October 21st, 2015.
Marty McFly: 2015? You mean we're in the future?
Jennifer: Future? Marty, what do you mean? How can we be in the future?
Marty McFly: Jennifer, I don't know how to tell you this, but... you're in a time machine.
Jennifer: And this is the year 2015?
Doc: October 21st, 2015.

Marty McFly: Mom, I just want to know one thing. Where's my father? Where's George McFly?
Old Lorraine: Marty... George... Your father is in the same place he's been for the past 12 years... Oak Park Cemetery.

Biff Tannen: 300 bucks? 300 bucks for a couple of dents? Hey, that's bullshit, Terry.
Terry: No, Biff, it was horse shit! And it was all over your car! I had to pay old man Jones 80 bucks to haul it away!
Biff Tannen: Old Man Jones! Probably re-sold it too. I oughtta get something for that!
Terry: You want to get something for it! You can go inside and you can call Old Man Jones! If he wants to give you a refund, that's fine!

Marty McFly: What about the police, Biff? They're gonna match up the bullet with that gun.
Biff Tannen: Kid, I own the police! Besides, they couldn't match up the bullet that killed your old man.
Marty McFly: You son of a bitch!
Biff Tannen: I suppose it's poetic justice. Two McFlys with the same gun.

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