Please do not misunderstand me: I have enormously enjoyed the best of Star Trek and Lucas/Spielberg's epics, to mention only the most famous examples of the genre. But these works are fantasy, not science fiction in the strict meaning of the term. It now seems almost certain that in the real universe we may never exceed the velocity of light. Even the very closest star systems will always be decades or centuries apart; no Warp Six will ever get you from one episode to another in time for next week's installment. The Great Producer in the Sky did not arrange his program planning that way.
Arthur C. Clarke, The Songs of Distant Earth (1986): Introdução