Who said "The past is behind us. What matters is what we do now."?

This quote is attributed to Guardians of the Galaxy.

The past is behind us. What matters is what we do now. - Guardians of the Galaxy

"The past is behind us. What matters is what we do now."

Guardians of the Galaxy Change

"I'm your friend, man. I do this because you're my friend."

"Sometimes the thing you fight the most is the thing you need the most."

"We are Groot."

"You're welcome for saving the galaxy, by the way."

"Change brings new opportunities."

"Every day is a new opportunity."

"Healing doesn't mean forgetting."

"You either get better or you get bitter."