Who said "I have learned that love is the only true power."?

This quote is attributed to Grey Worm.

I have learned that love is the only true power. - Grey Worm

"I have learned that love is the only true power."

Grey Worm Love

"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."

"I love my wife, but sometimes she drives me crazy."

"Love conquers all obstacles."

"Love is patient, love is kind."

"I'm not stupid, I'm just in love!"