Free Ender's Shadow by Orson Scott Card

God or had some reason why it was a good thing after all. As far as Bean could see, though, the dead kids would rather have been alive, just with more food. If God loved them so much, and he could do whatever he wanted, then why wasn't there more food for these kids? And if God just wanted them dead, why didn't he let them die sooner or not even be born at all, so they didn't have to go to so much trouble and get all excited about trying to be alive when he was just going to take them to his heart. None of it made any sense to Bean, and the more Sister Carlotta explained it, the less he understood it. Because if there was somebody in charge, then he ought to be fair, and if he wasn't fair, then why should Sister Carlotta be so happy that he was in charge?
      But when he tried to say things like that to her, she got really upset and talked even more about God and used words he didn't know and it was better just to let her say what she wanted and not argue.
      It was the reading that fascinated him. And the numbers. He loved that. Having paper and pencil so he could actually write things, that was really good.
      And maps. She didn't teach him maps at first, but there were some on the walls and the shapes of them fascinated him. He would go up to them and read the little words written on them and one day he saw the name of the river and realized that the blue was rivers and even bigger blue areas were places with even more water than the river, and then he realized that some of the other words were the same names that had been written on the street signs and so he figured out that somehow this thing was a picture of Rotterdam, and then it all made sense. Rotterdam the way it would look to a bird, if the buildings were all invisible and the streets were all empty. He found where the nest was, and where Poke had died, and all kinds of other places.
      When Sister Carlotta found out that he understood the map, she got very excited. She showed him maps where Rotterdam was just a little patch of lines, and one where it was just a dot, and one where it was too small even to be seen, but she knew where it would be. Bean had never realized the world was so big. Or that there were so many people.
      But Sister Carlotta kept coming back to the Rotterdam map, trying to get him to remember where things from his earliest memories were. Nothing looked the same, though, on the map, so it wasn't easy, and it took a long time for him to figure out where some of the places were where people had fed him. He showed these to Sister and she made a mark right on the map, showing each place. And after a while he realized -- all those places were grouped in one area, but kind of strung out, as if they marked a path from where he found Poke leading back through time to ...
      To the clean place.
      Only that was too hard. He had been too scared, coming out of the clean place with the janitor. He didn't know where it was. And the truth was, as Sister Carlotta herself said, the janitor might have lived anywhere compared to the clean place. So all she was going to find by following Bean's path backward was maybe the janitor's flat, or at least where he lived three years ago. And even then, what would the janitor know?
      He would know where the clean place was, that's what he'd know. And now Bean understood: It was very important to Sister Carlotta to find out where Bean came from.
      To find out who he really was.
      Only ... he already knew who he really was. He tried to say this to her. "I'm right here. This is who I really am. I'm not pretending.”
      "I know that," she said, laughing, and she hugged him, which was all right. It felt good. Back when she first started doing it, he didn't know what to do with his hands. She had to show him how to hug her back. He had seen some little kids -- the ones with mamas or papas -- doing that but he always thought they were holding on tight so they wouldn't drop off onto the street and get lost. He