“Twisted and perverse are the ways of the human mind," Jane intoned. "Pinocchio was such a dolt to try to become a real boy. He was much better off with a wooden head.”

“Early to bed and early to rise," Mazer intoned, "makes a man stupid and blind in the eyes.”

“Maezr smiled. "A hundred years ago, Ender, we found out some things. That when a commander's life is in danger he becomes afraid, and fear slows down his thinking. When a commander knows that he's killing people, he becomes cautious or insane, and neither of those help him do well. And when he's mature, when he has responsibilities and an understanding of the world, he becomes cautious and sluggish and can't do his job. So we trained children, who didn't know anything but the game, and never knew when it would become real. That was the theory, and you proved that the theory worked.”

“And when we diverge, it will be impossible for the expendables and the ship's computers on all the ships to know which version of Ram Odin to obey," said Ram. "Therefore I order you and all the other expendables to immediately kill every copy of Ram except me.""I'm so sorry," said the expendable. "One of the versions of Ram Odin did not include the word 'immediately,' and therefore his order was complete a fraction of a second before all the others. He is the real Ram Odin."Ram gave a little half smile. "How ironic. By specifying that you should act at once-"The expendable reached out with both hands, gave Ram's head a twist, and broke his neck. The sentence remained unfinished, but that did not matter, since the person saying it was not the real Ram Odin.”

“Everything we do means something, Ender realized. Them laughing. Me not laughing. He toyed with the idea of trying to be like the other boys. But he couldn’t think of any jokes, and none of theirs seemed funny. Wherever their laughter came from, Ender couldn’t find such a place in himself.”

“Perhaps it's called the end of the world because it's the end of the games, because I can go to one of the villages and become one of the little boys working and playing there, with nothing to kill and nothing to kill me, just living there. As he thought of it, though, he could not imagine what "just living" might actually be. He had never done it in his life. But he wanted to do it anyway.”

“That was interesting, to find that it wasn't hunger that caused children to become bullies on the street. The bulliness was already in the child, and whatever the stakes were, they would find a way to act as they needed to act. … Intelligence and education, which all these children had, apparently didn't make any important difference in human nature.”