Who said "Death is not the end; it's a reminder to live."?

This quote is attributed to Guardians of the Galaxy.

Death is not the end; it's a reminder to live. - Guardians of the Galaxy

"Death is not the end; it's a reminder to live."

Guardians of the Galaxy Death

"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."

"Death doesn't scare me anymore."

"Death and I are old friends."

"Welcome to my world."

"Death is just the beginning."