Back to the Future

"Never let fear prevent you from pursuing what matters."

"Your parents are the key to your existence, Marty."

"I've calculated seventeen possible outcomes, and only one leads to success."

"The past cannot be changed; only the future can be shaped."

"Marty, you have to understand: this is serious business."

"The paradox is a problem we must solve together."

"I don't trust flying cars. Roads are dangerous enough."

"Your future is whatever you make it, so make it a good one."

"Never underestimate the power of determination."

"Every action has a reaction; every choice has consequences."

"I've devoted my life to science and discovery."

"We must respect the timeline and all its consequences."

"The DeLorean is a remarkable machine."

"Science demands we verify our hypotheses with evidence."

"You've got to believe in yourself, even when nobody else does."

"Without change, there is no growth."

"Tell me about your family, Marty. How are they?"

"This is the gateway to the future!"

"I must know about the future from someone who's lived it."

"1.21 gigawatts of electricity is required to achieve temporal displacement."

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

"Anything is possible if you put your mind to it."

"Marty, you're my best friend and I couldn't bear to lose you."

"The space-time continuum is the very fabric of our existence."

"Time travel is theoretically possible, but practically impossible."

"I don't like violence, but I will defend what's right."

"The consequences of his actions could be disastrous."

"You're my best friend, Marty. I couldn't let you down."

"This is it, this is the point of maximum jeopardy."

"By the way, you're my best friend, and I care deeply about your well-being."