“Sometimes, when I’m in the midst of writing, I feel like I am suddenly walking on one of those moving sidewalks that you find in a big airport terminal. I can feel myself being gently propelled by some exterior force. Something is carrying me along — something powerful and generous— and that something is decidedly not me. You may know this feeling. It’s the feeling you get when you’ve made something wonderful, or done something wonderful, and when you look back at it later, all you can say is: 'I don’t even know where that came from.' I only rarely experience this feeling, but it’s the most magnificent sensation imaginable when it arrives.”