Ender Wiggin must believe that no matter what happens, no adult will ever, ever step in to help him in any way.

You want to beat Peter?" she asked "No," he answered "Beat the buggers. Then come home and see who notices Peter Wiggen anymore. Look him in the eye when all the world loves and reveres you. That'll be defeat in his eyes, Ender, thats how you win" "You don't understand" he said "Yes i do" "No you don't. I don't want to beat Peter" "Then what do you want?" "I want him to love me

There was no doubt now in Ender's mind. There was no help for him. Whatever he faced, now and forever, no one would save him from it. Peter might be scum, but Peter had been right, always right; the power to cause pain is the only power that matters, the power to kill and destroy, because if you can't kill then you are always subject to those who can, and nothing and no one will ever save you.

If you lay a hand on me I'll ram your testicles so far up inside your abdomen it'll take a heart surgeon to get them out.

A man always assumes that others are as virtuous as himself

His vices were the vices of his time and culture, but his virtues transcended the milieu of his life.

The only process you've mastered is the process of elimination, and the only reason you've mastered that is because you can do it in the toilet.