I am trying to prevent a bloodbath. Is that clear enough for you? I'm trying to prevent a civil war that could kill half the people in this world.

We should not have assumed that a political space station could be built.

The Gods do not protect fools. Fools are protected by more capable fools.

The brightest minds in our field have been trying to find a definition of science fiction for these past seventy years. The short answer is, science fiction stories are given as possible, not necessarily here and now, but somewhere, sometime.

The reader has certain rights. He bought your story. Think of this as an implicit contract. He's entitled to be entertained, instructed, amused; maybe all three. If he quits in the middle, or puts the book down feeling his time has been wasted, you're in violation.

Hopeless causes are the only ones worth fighting for. The fight for the taxpayer is the most hopeless of them all.

SF isn't a genre; SF is the matrix in which genres are embedded, and because the SF field is never going in any one direction at any one time, there is hardly a way to cut it off.