Many people have tried to define science fiction. I like to call it the literature of exploration and change. While other genres obsess upon so-called eternal verities, SF deals with the possibility that our children may have different problems. They may, indeed, be different than we have been.
David BrinWhen I begin a book, I inevitably discover many things along the way, about the characters, their past histories and the political intrigues that surround them. This discovery process is vital, and I would not prejudice it by deciding too much in advance
David BrinBut 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.
David Brin