An enemy, Ender Wiggin," whispered the old man. "I am your enemy, the first one you've ever had who was smarter than you. There is no teacher but the enemy. No one but the enemy will tell you what the enemy is going to do. No one but the enemy will ever teach you how to destroy and conquer. Only the enemy shows you where you are weak. Only the enemy tells you where he is strong. And the rules of the game are what you can do to him and what you can stop him from doing to you. I am your enemy from now on. From now on I am your teacher.

This emotion I'm feeling now, this is love, right?

You will learn to defeat the enemy.

Anything can become a children's book if you give it to a child...Children are actually the best (and worst) audience for literature because they have no patience with pretence.

What a waste of time to be posthumously famous.

Where ideas are real and reality is shadow.

In all my study of history, I have never found a time or place I would rather have lived than now.