AMAZING BOOK. Great read for anyone: children, young adults, adults, men, women ... doesn't matter. I loved it, my older sister loved it, and my younger brother loved it. I'm not a "sci-fi" type person, but my sister (who recommended it to me) explained it as being more about the relationships between children, and she was totally right. Yes, the book is sci-fi and has aliens and manipulation of gravity and all of that, but that's not really what it's fundamentally about. I would highly recommend this book to anyone, and I can't wait to read Ender's Shadow (the same story from a different point of view).