Dr. Emmett Brown

"The space-time continuum is more fragile than you might think."

"According to my calculations, we have approximately four minutes."

"This is a matter of life and death, Marty. We must be very careful."

"Scientific progress goes "boink"?"

"The key to controlling temporal displacement is precision."

"A real scientist doesn't ask questions he can't answer."

"This is fascinating! You have to tell me everything that happens."

"I'm conducting an experiment in chronology. Care to help?"

"The universe is more complex than we ever imagined."

"You see, Marty, every moment in time is a possibility."

"I've devoted my life to understanding the mysteries of time."

"If we succeed, it will revolutionize our understanding of physics."

"Don't you see? We're making history!"

"The paradox of temporal mechanics is that it can unmake what was."

"Science demands that we ask difficult questions."

"What we do here will echo through the centuries."

"Time is a river, not a road. You can't simply step across it twice."

"My life's work has led to this singular moment."

"We must trust in the laws of physics to guide us."

"The experiment is a success! Everything has worked perfectly."

"I'm afraid the past is catching up with us, Marty."

"Your future is in your hands. Make it a good one."

"Sometimes the greatest discoveries come from the most unlikely places."

"We've stumbled upon something profound, Marty. Something that will change everything."

"The flux capacitor works! It actually works!"

"I need you to trust me, Marty. Trust in science."

"The past is set. We can only learn from it."

"Marty, your very existence is at stake."

"I've calculated every variable. We cannot fail."

"The space-time continuum is not to be trifled with."