Just as there are Laws of Conservation of Matter and Energy, so there are in fact Laws of Conservation of Pain and Joy. Neither can ever be created o… - Spider Robinson

I think of us as a people who inoculate ourselves against a plague of insanity with a powerful anti-idiotic called science fiction. I think sf is a literature which by its very nature requires that you be at least a little sane, that you know at least a little something. You must abdicate the right to be ignorant in order to enjoy science fiction, which most people are unwilling to do; and you must learn, if not actually how to think things through, at least what the trick looks like when it's done. Frequent injections will keep a lot of madness away.

(Mary Kay is one of the secret masters of the world: a librarian. They control information. Don’t ever piss one off.)

It took a couple of hundred million years to develop a thinking ape and you want a smart one in a lousy few hundred thousand? That lemming drive you're talking about is there — but there's another kind of drive, another kind of force that's working against it. Or else there wouldn't still be any people and there wouldn't be the words to have this conversation and—" She paused, looked down at herself. "And I wouldn't be here to say them.