-In the scheme of journeys, it’s hardly self-discovery. It’s not a voyage down the Yangtze or anything. It’s more like, say, driving from Reading to London. Tricksy and a bit tiring if you get caught in traffic, but a relief once you’re there.

In the metaphor of this, I already have a car, inasmuch as I like vegetables. I like them very much. They weren’t really optional when I was little, and it never occurred to me to complain about them, or not to eat them. I don’t remember ever refusing fo...