Jim Caviezel

The point I'm trying to make is that you go to church on Sunday. But the real Christ is out there in your life every day, whether it be the guy you help on the street, how you live your life, and your countenance that makes people want to be you.

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.