Particles of raw inspiration sleet through the universe all the time. Every once in a while one of them hits a receptive mind, which then invents DNA or the flute sonata form or a way of making light bulbs wear out in half the time. But most of them miss. Most people go through their lives without being hit by even one.
Terry PratchettIt cannot be said often enough that science fiction as a genre is incredibly educational - and I'm speaking the written science fiction, not 'Star Trek.' Science fiction writers tend to fill their books if they're clever with little bits of interesting stuff and real stuff.
Terry PratchettDon't you understand?" snarled Rincewind. "We are going over the Edge, godsdammit!" "Can't we do anything about it?" "No!" "Then I can't see the sense in panicking," said Twoflower calmly.
Terry Pratchett