Who said "I have learned what it means to be alive."?

This quote is attributed to Grey Worm.

I have learned what it means to be alive. - Grey Worm

"I have learned what it means to be alive."

Grey Worm Life

"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."

"Life is meant to be lived with passion."

"Life is what happens when you're busy making other plans."

"Life is a journey, not a destination."

"Life's too short for regrets."