Back to the Future

"The consequences of his actions could be disastrous."

"Marty, you've got to come back with me. It's your kids!"

"Remember, the only way to save the future is to appreciate the past."

"I'm going to need the help of a time machine."

"This temporal displacement of citizens from one era to another could cause serious problems."

"Whatever happens, happens."

"The future hasn't been written yet. No one's has."

"I believe in you, Marty."

"We must use extreme care."

"This is the part where you tell me something useful."

"What happens if Marty sees us together? It could create a paradox."

"I'm sorry, but you're my density. No, wait, your density."

"Science rules!"

"The past can hurt, but you can run from it or learn from it."

"Do you have any idea what you've done? You've created a new future!"

"Well, the way I see it, every life has a defining moment."

"I've always said that if you could somehow harness lightning, you could achieve time travel."

"The space-time continuum is not something to fool with."

"You must be referring to some friend of yours in the future."

"This is a matter of life and death."

"We don't need roads where we're going."

"The lightning strike is the key. It will generate 1.21 gigawatts of electricity."

"I'm afraid you've been asleep for nearly nine hours."

"You see, according to my calculations, you fell asleep exactly 120 minutes before you were supposed to."

"This is it, this is the answer. It's what we've both been waiting for."

"I'm your density. I mean, your destiny."

"The way I see it, if you're gonna build a time machine into a car, why not do it with some style?"

"If my calculations are correct, when this baby hits 88 miles per hour, you're gonna see some serious shit."

"There's that word again, 'heavy.' Is there something wrong with the Earth's gravitational pull?"

"This is heavy."