“He had learned that close-held secrets could often be cracked by going all the way to the top and there making himself unbearably unpleasant. He knew that such twisting of the tiger's tail was dangerous, for he understood the psychopathology of great power.”

“Harshaw had the arrogant humility of the man who has learned so much that he is aware of his own ignorance and he saw no point in 'measurements' when he did not know what he was measuring.”

“Foster had in common with every great religious leader of that planet two traits: he had an extremely magnetic personality, and sexually he did not fall near the human norm. On Earth great religious leaders were always either celibate or the antithesis. Foster was not celibate. (p.289)”

“Social responsibility above the level of family, or at most of tribe, requires imagination-- devotion, loyalty, all the higher virtues -- which a man must develop himself; if he has them forced down him, he will vomit them out.”

“At least once every human should have to run for his life, to teach him that milk does not come from supermarkets, that safety does not come from policemen, that 'news' is not something that happens to other people. He might learn how his ancestors lived and that he himself is no different--in the crunch his life depends on his agility, alertness, and personal resourcefulness.”

“[He] stopped long enough to remind himself that this baby innocent was neither babyish nor innocent — was in fact sophisticated in a culture which he was beginning to realize, however dimly, was far in advance of human culture in some very mysterious ways… and that these naive remarks came from a superman — or what would do in place of a ‘superman’ for the time being.”

“From somewhere, back in my youth, heard Prof say, 'Manuel, when faced with a problem you do not understand, do any part of it you do understand, then look at it again.' He had been teaching me something he himself did not understand very well—something in math—but had taught me something far more important, a basic principle.”