Sci-fi uses the images that sf - starting with H.G. Wells - made familiar: space travel, aliens, galactic wars and federations, time machines, et cetera, taking them literally, not caring if they are possible or even plausible. It has no interest in or relation to real science or technology. It's fantasy in space suits. Spectacle. Wizards with lasers. Kids with ray guns. I've written both, but I have to say I respect science fiction enough that I wince when people call it sci-fi.
Ursula K. Le GuinAll makers must leave room for the acts of the spirit. But they have to work hard and carefully, and wait patiently, to deserve them.
Ursula K. Le GuinWhat is love of one's country; is it hate of one's uncountry? Then it's not a good thing. Is it simply self-love? That's a good thing, but one musn't make a virtue of it, or a profession...Insofar as I love life, I love [my country], but that sort of love does not have a boundary-line of hate. And beyond that, I am ignorant, I hope.
Ursula K. Le Guin