Jerry Greenfield

It's hard to shape glass. It took me years of practice, and as a result, I've never gotten bored with it. It's difficult. Every time I come into the studio, I've got some sort of new challenge. And something that I would like to learn how to do better, and the material never disappoints me.

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.