"This is a pen."
"This is heavy."
"There's that word again, 'heavy.' Is there something wrong with the Earth's gravitational pull?"
"I'm your density. I mean, your destiny."
"You're my best friend, and I care about you, but don't ask me to do this."
All quotes by Marty McFly
"We're not just after treasure. We're preserving history."
"The mind is humanity's greatest tool."
"A tidy room reflects a tidy mind."
"You can learn a lot about a person by how they keep their space."
All Knowledge quotes