“A science fiction story is a story built around human beings, with a human problem and a human solution, which would not have happened at all without its scientific content.”

“We are now in a position to determine just what sort of science fiction story this really is.”

“Science fiction, outside of poetry, is the only literary field which has no limits, no parameters whatsoever.”

“A billion and a half human souls, who had been given the techniques of music and the graphic arts, and the theory of technology, now had the others: philosophy and logic and love; sympathy, empathy, forbearance, unity, in the idea of their species rather than in their obedience; membership in harmony with all life everywhere.A people with such feelings and their derived skills cannot be slaves. As the light burst upon them, there was only one concentration possible to each of them—to be free, and the accomplished feeling of being free. As each found it, he was an expert in freedom, and expert succeeded expert, transcended expert, until (in a moment) a billion and a half human souls had no greater skill than the talent of freedom.”

“Create a world in which these things do or do not exist, or in which they are extended in some way. Test reality against this fiction. The reader will recognize the world that you're talking about, even though it may be another one altogether”

“Basically, fiction is people. You can't write fiction about ideas.”

“Why on earth do you carry a mirror around with you?” “It's purely a defensive device. We seldom quarrel, and this is one of the reasons. Can you imagine yourself getting all worked up and contorted and illogical and then coming face to face with yourself, looking at yourself exactly as you look to everyone else?”