Who said "Justice must be swift and fair to all."?

This quote is attributed to Grey Worm.

Justice must be swift and fair to all. - Grey Worm

"Justice must be swift and fair to all."

Grey Worm Justice

"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."

"Justice must always prevail."

"You think I'm just some animal?"

"Fighting for what's right never gets easier."

"Justice is worth fighting for."