Eventually scientists will discover something that explains ghosts, just like they discovered electricity, which explained lightning, and it might be something about people's brains, or something about the earth's magnetic field, or it might be some new force altogether. And then ghosts won't be mysteries. They will be like electricity and rainbows and nonstick frying pans.

For me, disability is a way of getting some extremity, some kind of very difficult situation, that throws an interesting light on people.

I have very fond memories of swimming in Walden Pond when we lived in Boston. You'd swim past a log and see all these turtles sunning themselves. Slightly disturbing if you thought about how many more were swimming around your toes, but also rather wonderful.

I don't remember deciding to become a writer. You decide to become a dentist or a postman. For me, writing is like being gay. You finally admit that this is who you are, you come out and hope that no one runs away.

If you enjoy math and you write novels, it's very rare that you'll get a chance to put your math into a novel. I leapt at the chance.

I suffer depression only in the sense that I am a writer. We don't have proper jobs to go to. We are on our own all day. Show me a writer who doesn't get depressed: who has a completely stable mood. They'd be a garage mechanic or something.

The secret of contentment lay in ignoring many things completely.