Who said "I have learned the value of what I once lacked."?

This quote is attributed to Grey Worm.

I have learned the value of what I once lacked. - Grey Worm

"I have learned the value of what I once lacked."

Grey Worm Gratitude

"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."

"Gratitude makes life richer."

"A grateful heart is a happy heart."

"Respect those who came before us."

"Life's greatest treasures are the people we love"