“I wish I were a poet. I’ve never confessed that to anyone, and I’m confessing it to you, because you’ve given me reason to feel that I can trust you. I’ve spent my life observing the universe, mostly in my mind’s eye. It’s been a tremendously rewarding life, a wonderful life. I’ve been able to explore the origins of time and space with some of the great living thinkers. But I wish I were a...