Broca's Brain - Carl Sagan [159]
* Many statements about God are confidently made by theologians on grounds that today at least sound specious. Thomas Aquinas claimed to prove that God cannot make another God, or commit suicide, or make a man without a soul, or even make a triangle whose interior angles do not equal 180 degrees. But Bolyai and Lobachevsky were able to accomplish this last feat (on a curved surface) in the nineteenth century, and they were not even approximately gods. It is a curious concept this, of an omnipotent God with a long list of things he is forbidden to do by the fiat of the theologians.
* It is a charming notion that Napoleon actually spent his days aboard ship perusing the highly mathematical Mécanique céleste. But he was seriously interested in science and made an earnest attempt to survey the latest findings (see The Society of Arcueil: A View of French Science at the Time of Napoleon I by Maurice Crosland, Cambridge, Harvard University Press, 1967). Napoleon did not pretend to read all of the Mécanique céleste and wryly wrote to Laplace on another occasion, “The first six months which I can spare will be employed in reading it.” But he also remarked, on another of Laplace’s books, “Your works contribute to the glory of the nation. The progress and perfection of mathematics are linked closely with the prosperity of the state.”
† However, from astronomical arguments Aristotle concluded that there were several dozen unmoved prime movers in the universe. Aristotelian arguments for a prime mover would seem to have polytheistic consequences that might be considered dangerous by contemporary Western theologians.
* This subject is rich in irony. Augustine was born in Africa in 354 A.D. and in his early years was a Manichean, an adherent of a dualistic view of the universe in which good and evil are in conflict on roughly equal terms, and which was later condemned as a “heresy” by Christian orthodoxy. The possibility that all was not right with Manicheanism occurred to Augustine when he was studying its astronomy. He discovered that even the leading figures in the faith could not justify its murky astronomical notions. This contradiction between theology and science on matters astronomical was the initial impetus moving him toward Catholicism, the religion of his mother, which in later centuries persecuted scientists such as Galileo for trying to improve our understanding of astronomy. Augustine later became Saint Augustine, one of the major intellectual figures in the history of the Roman Catholic church, and his mother became Saint Monica, after whom a suburb of Los Angeles is named. Bertrand Russell wondered what Augustine’s view of the conflict between astronomy and theology would have been had he lived in the time of Galileo.
CHAPTER 24
GOTT
AND THE TURTLES
Now entertain conjecture of a time
When creeping murmur and the poring dark
Fills the wide vessel of the universe.
WILLIAM SHAKESPEARE,
Henry V, Act IV, Prologue
IN THE EARLIEST myths and legends of our species, there is a common and understandable view of the cosmos: it is anthropocentric. There were gods, to be sure. But the gods had feelings and weaknesses and were very human. Their behavior was seen as capricious. They could be propitiated by sacrifice and prayer. They intervened regularly in human affairs. Various factions of gods supported opposing sides in human warfare. The Odyssey expresses a generally held view that it is wise to be kind to strangers: they may be gods in disguise. Gods mate with humans, and the offspring are generally indistinguishable, at least in appearance, from people. The gods live on mountains or in the sky, or in some subterranean or submarine realm—at any rate, far off. It was difficult unambiguously to come upon a god, and so it was hard to check a story told about the gods. Sometimes