Who said "A man who faces his fear has already conquered it."?

This quote is attributed to Grey Worm.

A man who faces his fear has already conquered it. - Grey Worm

"A man who faces his fear has already conquered it."

Grey Worm Courage

"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."

"Never let fear stop you from chasing your dreams."

"Courage is being afraid but doing it anyway."

"Sometimes you gotta do what you gotta do."

"Sometimes you have to be the monster to stop the monsters."