There were nineteen other boys in his launch. They filed out of the bus and into the elevator. They talked and joked and bragged and laughed. Ender kept his silence. He noticed how Graff and the other officers were watching them. Analyzing. Everything we do means something, Ender realized.
Then it became clear. Graff had deliberately caused it. It was worse than the abuse in the shows. When the sergeant picked on you, the others liked you better. But when the officer prefers you, the others hate you.
Human beings are free except when humanity needs them. Maybe humanity needs you. To do something. Maybe humanity needs me—to find out what you’re good for. We might both do despicable things, Ender, but if humankind survives, then we were good tools.