“we accept fictions as fictions, as things that might be true in their world, if not quite in ours.”

“This is a work of fiction. Still, given an infinite number of possible worlds, it must be true on one of them. And if a story set in an infinite number of possible worlds is true in one of them, then it must be true in all of them. So maybe, it's not as fictional as we think.”

“And if they're fictional, it is entirely acceptable to cheat on fictional men with other fictional men.”

“All our ancient history, as one of our wits remarked, is no more than accepted fiction.”

“The problem with fiction, it has to be plausible. That's not true with non-fiction.”

“Science fiction is the arena of the not-yet, and every science fiction story has this element of not-yet-ness — usually a bit of technology or a scientific discovery that we don't know about in the real world of the present but that might be a possibility in the future.”