“But what force in the galaxy is stronger than she is?"

"Indifference." Jerusha surprised herself with the answer. "Indifference, Gundhalinu, is the strongest force in the universe. It makes everything it touches meaningless. Love and hate don't stand a chance against it. It lets neglect and decay and monstrous injustice go unchecked. It doesn't act, it allows. And that's what gives it so much power.”