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

This quote is attributed to Doc Brown.

Your parents are the key to your existence, Marty. - Doc Brown

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

Doc Brown Family

"This is heavy."

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

"Great Scott!"

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

"A man's home is his castle."

"Family is everything to me."

"Life's greatest treasure is the love of family."

"A woman's place is in the home... making it a happy one."