What kind of hard SF do I write? Everything from near-future, Earth-centric techno-thrillers to far-future, far-flung interstellar epics.

- Edward M. Lerner

SF has at least the advantage of not depending on preconceptions.

- John Sladek

I do not read SF as much as I used to. It's too much like a busman's holiday.

- Jack L. Chalker

The way I usually put it is that as an SF writer, I'm never required to be right.

- Karl Schroeder

SF is the literature of the theoretically possible, and F is the literature of the impossible.

- Piers Anthony

I feel SF is going through an experimental phase right now.

- Sarah Zettel