I'm not a great science fiction fan myself. I probably feel that way about Westerns. Like I used to play Cowboys and Indians, they can act out Will and the Robot.

Science is not a game in which arbitrary rules are used to decide what explanations are to be permitted.

The theory of undirected evolution is already dead, but the work of science continues.

Science is a self-sufficient activity.

The thing about science is that it's an accurate picture of the world.

In praising science, it does not follow that we must adopt the very poor philosophies which scientific men have constructed. In philosophy they have much more to learn than to teach.

There's no doubt that scientific training helps many authors to write better science fiction. And yet, several of the very best were English majors who could not parse a differential equation to save their lives.

Predicting has a spotty record in science fiction. I've had some failures. On the other hand, I also predicted the fall of the Berlin Wall and the rise of fundamentalist Islam... and I'm not happy to be right in all of those cases.

Change is the principal feature of our age and literature should explore how people deal with it. The best science fiction does that, head-on.

But honestly, if you do a rigorous survey of my work, I'll bet you'll find that biology is a theme far more often than physical science.