Chapter 4: In the shuttle from Earth to battle school, what secret does Ender discover

Ender sees that Graff is not going to be his friend, despite his hopes, based on the idea that Graff does not lie to him. Graff says that his job is to create a Napoleon, an Alexander, a Caesar, or a mixture of the three, plus all the subordinates he needs to save the world--but "nowhere in that does it say that I need to make friends with children." Graff adds that Ender is needed by humankind to save them; "Human beings are free except when humanity needs them." The only way for Ender to get the other boys to stop hating him is to be so good at what he does that they cannot ignore him.