Who said "I learned that it's never too late to change."?

This quote is attributed to George McFly.

I learned that it's never too late to change. - George McFly

"I learned that it's never too late to change."

George McFly Change

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

"This is heavy."

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

"I'm not very good at science."

"Change brings new opportunities."

"Every day is a new opportunity."

"Healing doesn't mean forgetting."

"You either get better or you get bitter."