Burns Too Bright, Lives Too Fast

"Try not to hurt yourself doing it," Arthur advised, resettling himself, but not nearly as comfortably. The whole conversation had struck him something hard, and his mind had gotten itself stuck in a pensive place. "Remember not to think of every stranger as an enemy," he said, finally, "You'll end more wars with pardon and mercy than steel or threats."

It was most likely a good thing that Romeo didn't know about his father's policies, or he would've known what this meant.