Who said "The past cannot be changed. We can only move forward."?

This quote is attributed to Grey Worm.

The past cannot be changed. We can only move forward. - Grey Worm

"The past cannot be changed. We can only move forward."

Grey Worm Change

"I am Grey Worm. I have no name."

"Unsullied do not fear death."

"We are the dragons' soldiers."

"A soldier's duty is to obey."

"Change brings new opportunities."

"Every day is a new opportunity."

"Healing doesn't mean forgetting."

"You either get better or you get bitter."