"…There's often a literal side to SF language. There are many strings of words that can appear both in an SF text and in an ordinary text of naturalistic fiction. But when they appear in a naturalistic text we interpret them one way, and when they appear in an SF text we interpret them another. Let me illustrate this by some examples I've used many times before. The phrase "her world exploded" in a naturalistic text will be a metaphor for a female character's emotional state; but in an SF text, if you had the same words— "her world exploded"—you'd have to maintain the possibility that they meant: a planet belonging to a woman blew up…"

“If you're going to do something stupid—and we all do—it might as well be a brave and foolish thing.”

“Simply turn them loose in the haze of their own injured psyches and they will create an enemy, greater and more malignant than any a psychologist could create for them, always hidden behind their own terror.”

“She recalled her absurd attempt to construct an example—an image that, because it was constructed of things it simply did not fit, reversed the idea into an idea silly by itself, ridiculous in application—a ridiculousness that could easily, she saw, have strayed into the pernicious, the odious, or the destructive, depending on how widely one had insisted on applying it.”

“Yeah, nigger, you better grin. Niggers can't smile in this book.”

“You seem to be using some sort of logical system where when you get near any explanation, you say: “By definition my problem is insoluble. Now that explanation over there would solve it. But since I’ve defined my problem as insoluble, then by definition that solution doesn’t apply.”

“Her mother’s humpf mixed contempt with frustration. “You just don’t understand anything, do you? We try to bring up our children so that they are protected from the world’s evils, only to find we’ve raised a pack of innocents who seem to be about to stumble into them at every turn just from sheer stupidity!”