My alarm woke me early. I was in a hotel room in London, near the headquarters of the BBC. I hadn't slept well. When I looked in the bathroom mirror, I saw someone pale and slightly terrified. I had reason to feel nervous. In just over an hour I would be speaking live to an audience of millions on the BBC's flagship radio discussion program, Start the Week. As I gazed into the mirror, I was aware that I was talking, silently, in my head. My words were a reassurance. They were aimed at me. “Relax,” I said. “You've been on Start the Week before.” I had the impression that I was speaking to myself but was also hearing something internally, the familiar shadow of a voice.