"Pleasure, the outer edge of ecstasy, was in the dour days of Protestantism, considered sinful in itself, wherever gained; Rome held specifically that any or all sexual pleasure was sinful. And for all this capped volcano produced in terms of bridges and houses, factories and bombs, it gouted from its riven sides a frightful harvest of neurosis. And even where a nation officially discarded the church, the same repressive techniques remained, the same preoccupation with doctrine, filtered through the same mesh of guilt. So sex and religion, the real meaning of human existence, ceased to be meaning and became means; the unbridgeable hostility between the final combatants was the proof of the identity of their aim—the total domination, for the ultimate satisfaction of the will to superiority, of all human minds."

“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.”

“You cannot be objective about this because you have been indoctrinated, sermonized, drenched, imbued, inculcated and policed on the matter since first you wore blue booties. You come from a time and place in which the maleness of the male, and the femaleness of the female, and the importance of their difference, were matters of almost total preoccupation.”

“So it was that Lone came to know himself; and like the handful of people who have done so before him he found, at this pinnacle, the rugged foot of a mountain.”

“And Charlie asked questions! His unease had long since disappeared, and two of his most deep-dyed characteristics took over: one, the result of his omnivorous, undisciplined, indefatigable reading and picking of brains; second, the great gaping holes this had left in his considerable body of knowledge. Both appeared far more drastic than he had heretofore known; he knew ever so much more than he knew he knew, and he had between five and seven times as much misinformation and ignorance than he had ever dreamed.”

“If All Men Were Brothers, Would You Let One Marry Your Sister?”

“It's the Simple things that are really effective. Try to remember that.”