"So the whole war is because we can't talk to each other."
"If the other fellow can't tell you his story, you can never be sure he isn't trying to kill you."
"What if we just left them alone?"
"Ender, we didn't go to them first, they came to us. If they were going to leave us alone, they could have done it a hundred years ago, before the First Invasion."
"Maybe they didn't know we were intelligent life. Maybe—"