Page 869 - Enders_Game_Full_Book

"Right."
"Could I help it that humans kept adding computers and linking them up?"
"But it isn't the hardware, Jane. It's the programs. The mentation."
"I have to have the physical memory to hold all of that."
"You have the memory. The question is, can you access it without the ansibles?"
"I can try. As you said to her, it's like learning to flex a muscle I never knew I had." "Or learning to live without one."
"I'll see what's possible."
What's possible. All the way home, the car floating over the capim, he was also flying, exhilarated to know that something was possible after all, when till now he had felt nothing but despair. Coming home, though, seeing the burnt-over forest, the two solitary fathertrees with the only greenery left, the experimental farm, the new hut with the cleanroom where Planter lay dying, he realized how much there still was to lose, how many would still die, even if now they had found a way for Jane to live.
***
It was the end of the day. Han Fei-tzu was exhausted, his eyes hurting from all that he had read. He had adjusted the colors on the computer display a dozen times, trying to find something restful, but it didn't help. The last time he had worked so intensely was as a student, and then he had been young. Then, too, he had always found results. I was quicker, then, brighter. I could reward myself by achieving something. Now I'm old and slow, I'm working in areas that are new to me, and it may be that these problems have no solutions. So there's no reward to bolster me. Only the weariness. The pain at the top of my neck, the puffy, tired feeling in my eyes.
He looked at Wang-mu, curled up on the floor beside him. She tried so hard, but her education had begun too recently for her to be able to follow most of the documents that passed through the computer display as he searched for some conceptual framework for faster-than-light travel. At last her weariness triumphed over her will; she was sure she was useless, because she couldn't understand enough even to ask questions. So she gave up and slept.
But you are not useless, Si Wang-mu. Even in your perplexity you've helped me. A bright mind to which all things are new. Like having my own lost youth perched at my elbow.
As Qing-jao was, when she was little, before piety and pride claimed her.