“They were sorting, or classifying. It's easy-anyone dressed funny is the enemy, especially if they reject your supremacy or do not acknowledge school as entertainment. If the enemy tries to look like you and act like you, only in more affordable clothes, that person is still the enemy, only of a more contemptible, less terrifying variety-”

“Annihilate the enemy with acts of kindness only you can afford.”

“Nothing you do for them will harm the enemy, the real enemy, it will only draw in more support for them as a party.”

“Your enemies hate you more than they hate your ideas. Should you want a project to be undone propose it. Even if it were as useful as a bishop's mire it would be rejected. Once you are defeated let the humblest-looking among you sponsor it and your enemies to humble you will approve it.”

“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 only 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. I will devise the strategy of your army, and you will learn to be quick and discover what tricks the enemy has for you. Remember, boy. From now on the enemy is more clever than you. From now on the enemy is stronger than you. From now on you are always about to lose.”

“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.”