'I don't want to go,' said Ender, 'but I will.'"
"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."
"In the moment when I truly understand my enemy, understand him well enough to defeat him, then in that very moment I also love him."
"It was not his fault he was a Third. It was the government's idea, they were the ones who authorized it - how else could a Third like Ender have got into school?"