I don't care how much you eat, Ender, self-cannibalism won't get you out of this school.

Sister Carlotta, I'm on a leave of absence right now. That means I've been sacked, in case you don't understand how the I.F. handles these things.” "Sacked! A miscarriage of justice. You ought to be shot.

I don't believe that there are aliens. I believe there are really different people.

No human being, when you understand his desires, is worthless. No one's life is nothing. Even the most evil of men and women, if you understand their hearts, had some generous act that redeems them, at least a little, from their sins.

Welcome to the human race. Nobody controls his own life, Ender. The best you can do is choose to fill the roles given you by good people, by people who love you.

Take me home, he said silently to Graff. In my dream you said you loved me. Take me home

Nature can't evolve a species that hasn't the will to survive. Individuals might be bred to sacrifice themselves, but the race as a whole can never cease to exist.