Most people don't realize how important librarians are. I ran across a book recently which suggested that the peace and prosperity of a culture was solely related to how many librarians it contained. Possibly a slight overstatement. But a culture that doesn't value its librarians doesn't value ideas and without ideas, well, where are we?

This is a work of fiction. Still, given an infinite number of possible worlds, it must be true on one of them. And if a story set in an infinite number of possible worlds is true in one of them, then it must be true in all of them. So maybe, it's not as fictional as we think.

I wondered, as I wondered so often when I was that age, who I was, and what exactly was looking at the face in the mirror. If the face I was looking at wasn't me, and I knew it wasn't, because I would still be me whatever happened to my face, then what was me? And what was watching?

I always say that if you're a novelist, the challenge is not writing what you think ought to happen, but trying in some way to write what did happen in a world that doesn't necessarily exist.

I miss you', he admitted. 'I'm here', she said. 'That's when I miss you most. When you're here. When you aren't here, when you're just a ghost of the past or a dream from another life, it's easier then.

There was nowhere they could have gone and they went there anyway.

Books are defensive, not offensive (unless you're the puzzled adult trying to make the kid with the book interact).