"When you're a kid, you have no power. You're physically small and weak, and adults are constantly telling you what to do. So it's incredibly compelling to imagine yourself not only as someone to whom exciting things happen but as someone who is more than those around you. The problem is that then you begin to grow up and realize you're just a lowly muggle. … Is it possible that all of us, weaned on these stories, end up inevitably disappointed with mundane life as it actually exists?"