Brad Pitt

I've always been at war with myself, for right or wrong. I don't know how to explain it more. It's universal. Some people are better at dealing with it, and they sleep with no pain - not pain, arguments. I've grown quite comfortable with being at war.

The historical novelist has to consider what has actually happened, while the SF writer is dealing in possibilities, but they are both in the business of imagining a world unlike our own and yet connected to it.