“Perversity, she thought. Could that have been what happened to the human race — a willing perversity that set at naught all human values which had been so hardly won and structured in the light of reason for a span of more than a million years? Could the human race, quite out of hand and with no sufficient reason, have turned its back upon everything that had built humanity?”

“All the Traps of Earth” (pp. 190-191); closing words.
Short Fiction, Skirmish (1977)
Context: Perhaps all that had happened had been no more than the working out of human destiny. If the human race could not attain directly the paranormal power he held, this instinct of the mind, then they would gain it indirectly through the agency of one of their creations. Perhaps this, after all, unknown to Man himself, had been the prime purpose of the robots.
He turned and walked slowly down the length of village street, his back turned to the ship and the roaring of the captain, walked contentedly into this new world he'd found, into this world that he would make — not for himself, nor for robotic glory, but for a better Mankind and a happier.
Less than an hour before he'd congratulated himself on escaping all the traps of Earth, all the snares of Man. Not knowing that the greatest trap of all, the final and the fatal trap, lay on this present planet.
But that was wrong, he told himself. The trap had not been on this world at all, nor any other world. It had been inside himself.
He walked serenely down the wagon-rutted track in the soft, golden afternoon of a matchless autumn day, with the dog trotting at his heels.
Somewhere, just down the street, the sick baby lay crying in its crib.

Source: Way Station (1963), Ch. 25
Context: That had not been the first time nor had it been the last, but all the years of killing boiled down in essence to that single moment — not the time that came after, but that long and terrible instant when he had watched the lines of men purposefully striding up the slope to kill him.
It had been in that moment that he had realized the insanity of war, the futile gesture that in time became all but meaningless, the unreasoning rage that must be nursed long beyond the memory of the incident that had caused the rage, the sheer illogic that one man, by death or misery, might prove a right or uphold a principle.
Somewhere, he thought, on the long backtrack of history, the human race had accepted an insanity for a principle and had persisted in it until today that insanity-turned-principle stood ready to wipe out, if not the race itself, at least all of those things, both material and immaterial, that had been fashioned as symbols of humanity through many hard-won centuries.

Source: History of Ancient Sanksrit Literature (1860) p.32
Context: History seems to teach that the whole human race required a gradual education before, in the fullness of time, it could be admitted to the truths of Christianity. All the fallacies of human reason had to be exhausted, before the light of a high truth could meet with ready acceptance. The ancient religions of the world were but the milk of nature, which was in due time to be succeeded by the bread of life.... The religion of Buddha has spread far beyond the limits of the Aryan world, and to our limited vision, it may seem to have retarded the advent of Christianity among a large portion of the human race. But in the sight of Him with whom a thousand years are but as one day, that religion, like the ancient religions of the world, may have but served to prepare the way of Christ, by helping through its very errors to strengthen and to deepen the ineradicable yearning of the human heart after the truth of God.

Source: Vestiges of the Natural History of Creation (1844), p. 278
Context: Of late years... it has been successfully shewn that the human race might have had one origin, for anything that can be inferred from external peculiarities.

Source: The Stars in their Courses (1931), p. 153.

Source: World War Z: An Oral History of the Zombie War

Address at Haile Selassie I University http://www.jah-rastafari.com/selassie-words/show-jah-word.asp?word_id=radhakrishan (now Addis Ababa University) honoring Indian President Sarvepalli Radhakrishnan (13 October 1965)

"Introduction", item 1
Industrial Society and Its Future (1995)

Black God's Kiss (1934)
Context: She half expected, despite her brave words, to come out upon the storied and familiar red-hot pave of hell, and this pleasant, starlit land surprised her and made her wary. The things that built the tunnel could not have been human. She had no right to expect men here. She was a little stunned by finding open sky so far underground, though she was intelligent enough to realize that however she had come, she was not underground now.