Then I had another thought: Physics disgusts me a little bit now, but I used to enjoy doing physics.  Why did I enjoy it?  I used to play with it.  I used to do whatever I felt like doing—it didn’t have to do with whether it was important for the development of nuclear physics, but whether it was interesting and amusing for me to play with.

Just circumstance. I was running a small theatre group and somebody didn’t deliver a play.

The way I often find what I’m going to write next is by writing.

It depends on the project. I’m working on a novel now, which started by taking a weird interest in something and circling around it. I think in the early stages, I like to do a lot of really rough draft brainstorming, trying to generate a lot of words, even though I know they’re not going to be part of the final draft. I find first drafts challenging and, actually, I prefer the revision stage, because it seems so daunting to create something out of nothing.

Well, if you write the way I do, which means that you start something and you rewrite it, especially the beginning part, you rewrite it time and time and time again, at some point you feel, not that it’s beyond repair, but that there’s nothing more you can do to fix it. In other words, as far as you’re concerned, that’s what you were going to write.