The art of fiction has not changed much since prehistoric times. The formula for telling a powerful story has remained the same: create a strong character, a person of great strengths, capable of deep emotions and decisive action. Give him a weakness. Set him in conflict with another powerful character -- or perhaps with nature. Let his exterior conflict be the mirror of the protagonist's own interior conflict, the clash of his desires, his own strength against his own weakness. And there you have a story. Whether it's Abraham offering his only son to God, or Paris bringing ruin to Troy over a woman, or Hamlet and Claudius playing their deadly game, Faust seeking the world's knowledge and power -- the stories that stand out in the minds of the reader are those whose characters are unforgettable.To show other worlds, to describe possible future societies and the problems lurking ahead, is not enough. The writer of science fiction must show how these worlds and these futures affect human beings. And something much more important: he must show how human beings can and do literally create these future worlds. For our future is largely in our own hands. It doesn't come blindly rolling out of the heavens; it is the joint product of the actions of billions of human beings. This is a point that's easily forgotten in the rush of headlines and the hectic badgering of everyday life. But it's a point that science fiction makes constantly: the future belongs to us -- whatever it is. We make it, our actions shape tomorrow. We have the brains and guts to build paradise (or at least try). Tragedy is when we fail, and the greatest crime of all is when we fail even to try.Thus science fiction stands as a bridge between science and art, between the engineers of technology and the poets of humanity.