There are a few years in your childhood when you can positively fly. It’s a natural progression, when you think about it. We’re born nailed to the earth. Then we learn to sit up, to crawl, to stand, to run, to dance. I know this program intimately. When I had my stroke seven years ago, I had to repeat the program, every step of the way. And every night in my bed I dreamed of running.

After you learn to run, you know you can fly. You just need to learn the trick of it. Build up momentum. Flap you...