Now they came back to him, on this night he was seventeen years old. All the years and places of his brief broken life came within mind's reach and made a whole again. He knew once more, at last, after this long, bitter, waisted time, who he was and where he was. But where he must go in the years to come, that he could not see; and he feared to see it.
Ursula K. Le GuinSci-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 GuinYou fear them because you fear death, and rightly: for death is terrible and must be feared,' the mage said...'And life is also a terrible thing,' Ged said, 'and must be feared and praised.
Ursula K. Le Guin