I define science fiction as the art of the possible. Fantasy is the art of the impossible. Science fiction, again, is the history of ideas, and they're always ideas that work themselves out and become real and happen in the world. And fantasy comes along and says, 'We're going to break all the laws of physics.' ... Most people don't realize it, but the series of films which have made more money than any other series of films in the history of the universe is the James Bond series. They're all science fiction, too - romantic, adventurous, frivolous, fantastic science fiction!
Ray BradburyTime is so strange and life is twice as strange. You must promise me not to live to be too old, William. It if is at all convenient, die before you're fifty. It my take a bit of doing. But I advise this is simply because there is no telling when another Helen Loomis might be born. It would be dreadful, wouldn't it, if you lived on to be very very old and some afternoon in 1999 walked down Main street and saw me standing there, aged twenty-one, and the whole thing out of balance again?
Ray Bradbury