I have always thought of poems as stepping stones in one's own sense of oneself. Every now and again, you write a poem that gives you self-respect and steadies your going a little bit farther out in the stream. At the same time, you have to conjure the next stepping stone because the stream, we hope, keeps flowing.
If you were the first person ever to design an application for the iPhone and you patented it, you would be very, very better off than we are right now, you know? But you've got to be the first one to do it. So I figured that Led Zeppelin or the Stones were going to do it unless we just got on to it. So I got cracking with the guys from Apple.