"I think you're cheating," Ender told Mazer one day.

"Oh?"

"You can observe my practice sessions. You can see what I'm working on. You seem to be ready for everything I do."

"Most of what you see is computer simulations," Mazer said. "The computer is programmed to respond to your innovations only after you use them once in battle."

"Then the computer is cheating."

"You need to get more sleep, Ender."

But he could not sleep. He lay awake longer and longer each night, and his sleep was less restful. He woke too often in the night. Whether he was waking up to think more about the game or to escape from his dreams, he wasn't sure. It was as if someone rode him in his sleep, forcing him to wander through his worst memories, to live in them again as if they were real. Nights were so real that days began to seem dreamlike to him. He began to worry that he would not think clearly enough, that he would be too tired when he played. Always when the game began, the intensity of it awoke him, but if his mental abilities began to slip, he wondered, would he notice it?

And he seemed to be slipping. He never had a battle anymore in which he did not lose at least a few fighters. Several times the enemy was able to trick him into exposing more weakness than he meant to; other times the enemy was able to wear him down by attrition until his victory was as much a matter of luck as strategy. Mazer would go over the game with a look of contempt on his face. "Look at this," he would say. "You didn't have to do this." And Ender would return to practice with his leaders, trying to keep up their morale, but sometimes letting slip his disappointment with their weaknesses, the fact that they made mistakes.

"Sometimes we make mistakes," Petra whispered to him once. It was a plea for help.

"And sometimes we don't," Ender answered her. If she got help, it would not be from him. He would teach; let her find her friends among the others.

Then came a battle that nearly ended in disaster. Petra led her force too far; they were exposed, and she discovered it in a moment when Ender wasn't with her. In only a few moments she had lost all but two of her ships.

Ender found her then, ordered her to move them in a certain direction; she didn't answer. There was no movement. And in a moment those two fighters, too, would be lost.

Ender knew at once that he had pushed her too hard because of her brilliance -- he had called on her to play far more often and under much more demanding circumstances than all but a few of the others. But he had no time now to worry about Petra, or to feel guilty about what he had done to her. He called on Crazy Tom to command the two remaining fighters, then went on, trying to salvage the battle; Petra had occupied a key position, and now all of Ender's strategy came apart. If the enemy had not been too eager and clumsy at exploiting their advantage, Ender would have lost. But Shen was able to catch a group of the enemy in too tight a formation and took them out with a single chain reaction. Crazy Tom brought his two surviving fighters in through the gap and caused havoc with the enemy, and though his ships and Shen's as well were finally destroyed, Fly Molo was able to mop up and complete the victory.

At the end of the battle, he could hear Petra crying out, trying to get a microphone, "Tell him I'm sorry, I was just so tired, I couldn't think, that was all, tell Ender I'm sorry."

She was not there for the next few practices, and when she did come back she was not as quick as she had been, not as daring. Much of what had made her a good commander was lost. Ender couldn't use her anymore, except in routine, closely supervised assignments. She was no fool. She knew what had happened. But she also knew that Ender had no other choice, and told him so.

The fact remained that she had broken, and she was far from being the weakest of his squad leaders. It was a warning -- he could not press his commanders more than they could bear. Now, instead of using his leaders whenever he needed their skills, he had to keep in mind how often they had fought. He had to spell them off, which meant that sometimes he went into battle with commanders he trusted a little less. As he eased the pressure on them, he increased the pressure on himself.

Late one night he woke up in pain. There was blood on his pillow, the taste of blood in his mouth. His fingers were throbbing. He saw that in his sleep he had been gnawing on his own fist. The blood was still flowing smoothly. "Mazer!" he called. Rackham woke up and called at once for a doctor.

As the doctor treated the wound, Mazer said, "I don't care how much you eat, Ender, self-cannibalism won't get you out of this school."

"I was asleep," Ender said. "I don't want to get out of Command School."

"Good."

"The others. The ones who didn't make it."

"What are you talking about?"

"Before me. Your other students, who didn't make it through the training. What happened to them?"

"They didn't make it. That's all. We don't punish the ones who fail. They just -- don't go on."

"Like Bonzo."

"Bonzo?"

"He went home."

"Not like Bonzo."

"What then? What happened to them? When they failed?"

"Why does it matter, Ender?"

Ender didn't answer.

"None of them failed at this point in their course, Ender. You made a mistake with Petra. She'll recover. But Petra is Petra, and you are you."

"Part of what I am is her. Is what she made me."

"You won't fail, Ender. Not this early in the course. You've had some tight ones, but you've always won. You don't know what your limits are yet, but if you've reached them already you're a good deal feebler than I thought."

"Do they die?"

"Who?"

"The ones who fail."

"No, they don't die. Good heavens, boy, you're playing games."

"I think that Bonzo died. I dreamed about it last night. I remembered the way he looked after I jammed his face with my head. I think I must have pushed his nose back into his brain. The blood was coming out of his eyes. I think he was dead right then."

"It was just a dream."

"Mazer, I don't want to keep dreaming these things. I'm afraid to sleep. I keep thinking of things that I don't want to remember. My whole life keeps playing out as if I were a recorder and someone else wanted to watch the most terrible parts of my life."

"We can't drug you if that's what you're hoping for. I'm sorry if you have bad dreams. Should we leave the light on at night?"

"Don't make fun of me!" Ender said. "I'm afraid I'm going crazy."

The doctor was finished with the bandage. Mazer told him he could go. He went.

"Are you really afraid of that?" Mazer asked.

Ender thought about it and wasn't sure.

"In my dreams," said Ender, "I'm never sure whether I'm really me."

"Strange dreams are a safety valve, Ender. I'm putting you under a little pressure for the first time in your life. Your body is finding ways to compensate, that's all. You're a big boy now. It's time to stop being afraid of the night."

"All right," Ender said. He decided then that he would never tell Mazer about his dreams again.

The days wore on, with battles every day, until at last Ender settled into the routine of the destruction of himself. He began to have pains in his stomach. They put him on a bland diet, but soon he didn't have an appetite for anything at all. "Eat," Mazer said, and Ender would mechanically put food in his mouth. But if nobody told him to eat, he didn't eat.

Two more of his squadron leaders collapsed the way that Petra had; the pressure on the rest became all the greater. The enemy outnumbered them by three or four to one in every battle now; the enemy also retreated more readily when things went badly, regrouping to keep the battle going longer and longer. Sometimes battles lasted for hours before they finally destroyed the last enemy ship. Ender began rotating his squadron leaders within the same battle, bringing in fresh and rested ones to take the place of those who were beginning to get sluggish.

"You know," said Bean one time, as he took over command of Hot Soup's four remaining fighters, "this game isn't quite as fun as it used to be."

Then one day in practice, as Ender was drilling his squadron leaders, the room went black and he woke up on the floor with his face bloody where he had hit the controls.

They put him to bed then, and for three days he was very ill. He remembered seeing faces in his dreams, but they weren't real faces, and he knew it even while he thought he saw them. He thought he saw Valentine sometimes, and sometimes Peter; sometimes his friends from the Battle School, and sometimes the buggers vivisecting him. Once it seemed very real when he saw Colonel Graff bending over him speaking softly to him, like a kind father. But then he woke top and found only his enemy, Mazer Rackham.

"I'm awake," said Ender.

"So I see," Mazer answered. "Took you long enough. You have a battle today."

So Ender got up and fought the battle and won it. But there was no second battle that day, and they let him go to bed earlier. His hands were shaking as be undressed.

During the night he thought he felt hands touching him gently. Hands with affection in them, and gentleness. He dreamed he heard voices.

"You haven't been kind to him."

"That wasn't the assignment."

"How long can he go on? He's breaking down."

"Long enough. It's nearly finished."

"So soon?"

"A few days, and then he's through."

"How will he do, when he's already like this?"

"Fine. Even today, he fought better than ever."

In his dream, the voices sounded like Colonel Graff and Mazer Rackham. But that was the way dreams were, the craziest things could happen, because he dreamed he heard one of the voices saying, "I can't bear to see what this is doing to him." And the other voice answered, "I know. I love him too." And then they changed into Valentine and Alai, and in his dream they were burying him, only a hill grew up where they laid his body down, and he dried out and became a home for buggers, like the Giant was.

All dreams. If there was love or pity for him, it was only in his dreams.