Who said "I can't change the past. I've learned that the hard way."?

This quote is attributed to Marty McFly.

I can't change the past. I've learned that the hard way. - Marty McFly

"I can't change the past. I've learned that the hard way."

Marty McFly Wisdom

"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."

"I'm not angry, I'm just disappointed."

"The best things in life are free."

"You can't have everything in life, but you can have what matters most."

"A woman's intuition is rarely wrong."