I remember feeling something when I was a kid. It’s this tickle behind your bellybutton, a sense that you’re brushing up against something magical. I had it all the time when I played with my G.I. Joe toys, when I read Voyage of the Dawn Treader, whenever I drew the first line of a new picture in my sketchbook, when I traipsed through the woods and came upon a rabbit or a snake in the grass. It’s the feeling that you’re being watched, the sudden, awful realization that you’re not alone. I get the feeling sometimes when I’m at Disney with my children, and when I’m at a wedding and we stand as the bride walks the aisle. Sometimes I feel it during communion. That feeling comes less and less the older you get, if you’re not careful to keep it alive. The world is full of surprises. It’s both scarier and more wonderful than you think. All these things prepare the heart for the jarring truth that there is an invisible Other, and He’s watching you. “Believe,” Jesus said, again and again, and that’s hard to do with a dead imagination.
Quoted from his interview on JT's blog.