Jerry Coyne

"I was flabbergasted. How could it be that someone found evidence convincing but was still not convinced? The answer, of course, was that his religion had immunized him against my evidence."

"Science and religion, then, are competitors in the business of finding out what is true about our universe. In this goal religion has failed miserably, for its tools for discerning “truth” are useless. These areas are incompatible in precisely the same way, and in the same sense, that rationality is incompatible with irrationality."

"Understanding reality, in the sense of being able to use what we know to predict what we don’t, is best achieved using the tools of science, and is never achieved using the methods of faith. That is attested by the acknowledged success of science in telling us about everything from the smallest bits of matter to the origin of the universe itself—compared with the abject failure of religion to tell us anything about gods, including whether they exist."

"One can meet all the emotional requisites of a human—except for the assurance that you’ll find a life after death—without the superstitions of religion."

"I will have achieved my aim if, by the end of this book, you demand that people produce good reasons for what they believe—not only in religion, but in any area in which evidence can be brought to bear. I’ll have achieved my aim when people devote as much effort to choosing a system of belief as they do to choosing their doctor. I’ll have achieved my aim If the public stops awarding special authority about the universe and the human condition to preachers, imams, and clerics simply because they are religious figures. And above all, I’ll have achieved my aim if, when you hear someone described as a “person of faith,” you see it as criticism rather than praise."

"If religion and science get along so well, why are so many scientists nonbelievers?"

"Ironically, as the credibility of creationists grows smaller, their voices get louder."

"After all, what new insights has religion produced in the last century?"

"I could go on, but the point is clear: religions make explicit claims about reality—about what exists and happens in the universe. These claims involve the existence of gods, the number of such gods (polytheism or monotheism), their character and behavior (usually loving and beneficent, but, in the case of Hindu and ancient Greek gods, sometimes mischievous or malevolent), how they interact with the world, whether or not there are souls or life after death, and, above all, how the deities wish us to behave—their moral code. These are empirical claims, and although some may be hard to test, they must, like all claims about reality, be defended with a combination of evidence and reason. If we find no credible evidence, no good reasons to believe, then those claims should be disregarded, just as most of us ignore claims about ESP, astrology, and alien abduction. After all, beliefs important enough to affect you for eternity surely deserve the closest scrutiny."

"The rational scrutiny of religious faith involves asking believers only two questions: How do you know that? What makes you so sure that the claims of your faith are right and the claims of other faiths are wrong?"

"Any “knowledge” incapable of being revised with advances in data and human thinking does not deserve the name of knowledge."

"“The interest I have in believing in something is not a proof that the something exists.”"

"Religion is heavily laden with the kind of confirmation bias that makes people see their own faiths as true and all others as false. In other words, religion is replete with features to help people fool themselves."

"In other words, truth is simply what is: what exists in reality and can be verified by rational and independent observers."

"“What distinguishes knowledge is not certainty but evidence.”"

"Claims of supernatural phenomena like the efficacy of prayer are rendered unfalsifiable by the assertion that “God will not be tested.” (Of course, if the tests had been successful, then testing God would have been fine!)"

"In the end, a theory that can’t be shown to be wrong can never be shown to be right."

"Living with uncertainty is hard for many people, and is one of the reasons why people prefer religious truths that are presented as absolute."

"Although scientists come in all faiths, including no faith at all, there is no Hindu science, no Muslim science, and no Jewish science. There is only science, combining brainpower from the whole world to produce one accepted body of knowledge. In contrast, there are thousands of religions, most differing profoundly in what they see as “true.”"

"These (i. e., the statements of the Nicene Creed) are all empirical statements about reality: they are either true or false, even if some are hard to investigate. These claims, of course, absolutely conflict with those of other faiths. Jews, Muslims, Hindus, and Sikhs don’t recognize Jesus as the Messiah. Muslims believe that those who do so will spend eternity in hell. Doesn’t choosing among such faiths require a way to evaluate whether this dogma is true?"

"You can find some religions without creationism, but you can’t find creationism without religion."

"The question to ask believers is this: “Does it really matter whether what you believe about God is true—or don’t you care?” If it does matter, then you must justify your beliefs; if it doesn’t, then you must justify belief itself."

"My claim is this: science and religion are incompatible because they have different methods for getting knowledge about reality, have different ways of assessing the reliability of that knowledge, and, in the end, arrive at conflicting conclusions about the universe. “Knowledge” acquired by religion is at odds not only with scientific knowledge, but also with knowledge professed by other religions. In the end, religion’s methods, unlike those of science, are useless for understanding reality."

"In the end, religious investigations of “truth,” unlike those of science, are deeply dependent on confirmation bias. You start with what you were taught to believe, or what you want to believe, and then accept only those facts that support your prejudices. This is the basis for the theological practice of “apologetics,” designed to defend religion against counterarguments and disconfirming evidence....In contrast, science has no apologetics, for we test our conclusions by trying to find counterevidence."

"The most important component of the incompatibility between science and religion is religion’s dependence on faith."

"Theologians intensely dislike the definition of faith as belief without—or in the face of—evidence, for that practice sounds irrational. But it surely is, as is any system that requires supporting a priori beliefs without good evidence. In religion, but not science, that kind of faith is seen as a virtue."

"“Blasphemy” and “heresy” are terms of religion, not science."

"In fact, changes like the elimination of limbo don’t come from new information, but from secular currents in society that make church dogma seem insupportable or even barbaric."

"Just as many churches don’t want to be seen as rejecting science, neither do they wish to lag too far behind public morality, and so they often tweak their religious “truths” to reflect the zeitgeist."

"But all that changed when Darwin explained those designlike features by natural selection. The best evidence for God simply vanished."

"One can’t read a great deal of theology without appreciating the mental dexterity of its practitioners when faced with hard problems. And as a scientist, I regret how much more we’d understand about nature had that dexterity been applied to science instead, or to any field involved in studying what’s real."

"Most of the world’s believers reject these claims (i. e., of Scientology, Mormonism, and Christian Science) as blatantly false. But that’s only because these three religions are fairly new. They were founded in the last two centuries, and we see their origin not as divine but as obvious fabrications of humans—in the case of Joseph Smith, of a con man. But if you look with equally critical eyes at the doctrines of older faiths, their tenets seem equally bizarre."

"To a very large extent, which religion you accept and which you reject are accidents of birth. And after you’ve been religious for years, and surrounded by those who believe likewise, you become emotionally invested in your faith’s truth. This makes you more susceptible to confirmation bias and less likely to be skeptical about your beliefs."

"The different claims among these faiths have consequences, for they’ve produce endless misery over the course of history....Clearly, religions aren’t incompatible only with science: they’re incompatible with one another....This farrago of conflicting and irresolvable claims about reality stands in stark contrast to science."

"What I am saying is two things. First, religion hasn’t obviously come closer to understanding the divine....I also claim that insofar as theology or religious beliefs do change within a faith, those changes are driven largely by either science or changes in secular culture....Religious morality, at least as promulgated by priests, rabbis, imams, and theologians, is usually one step behind secular morality."

"The methodological conflicts between science and religion cannot be brokered, for faith has no reliable way to find truth."

"Our reliance on naturalism, then, is not an assumption decided in advance, but a result of experience—the experience of men like Darwin and Laplace who found that the only way forward was to posit natural rather than supernatural explanations. Because of this success, and the recurrent failure of supernaturalism to explain anything about the universe, naturalism is now taken for granted as the guiding principle of science."

"If you spend your life looking in vain for the Loch Ness Monster, stalking the lake with a camera, sounding it with sonar, and sending submersibles into its depths, and yet still find nothing, what is the more sensible view: to conclude provisionally that the monster simply isn’t there, or to throw up your hands and say, “It might be there; I’m not sure”? Most people would give the first response—unless they’re talking about God."

"It’s important to realize that philosophical naturalism is, like atheism, a provisional view. It’s not the kind of worldview that says, “I know there is no god,” but the kind that says, “Until I see some evidence, I don’t accept the existence of gods.”"

"Science in fact has a lot to say about the supernatural. It can and has tested it, and so far has found no evidence for it....Indeed, over its history science has repeatedly investigated supernatural claims and, in principle, could find strong evidence for them. But that evidence hasn’t appeared."

"Theists’ typical response to these failures (i. e., of prayer to affect rates of healing) is to say either “God won’t let himself be tested” or “That’s not what prayer is about: it’s simply a way to converse with God.” But you can bet that had these studies shown a large positive effect, the religious would be noisily flaunting this as evidence for God. The confirmation bias shown by accepting positive results but explaining away negative ones is an important difference between science and religion."

"This shows what we already know: belief may arise by indoctrination or authority, but is often maintained by social utility. But if no conceivable evidence can shake your faith in a theistic God, then you’ve deliberately removed yourself from rational discourse. In other words, your faith has trumped science."

"Hume was right about one thing: to have real confidence in a miracle, one needs evidence—massive, well-documented, and either replicated or independently corroborated evidence from multiple and reliable sources. No religious miracle even comes close to meeting those standards."

"In the end, theistic evolution is not a useful compromise between science and religion. Insofar as it makes testable predictions, it has been falsified, and insofar as it makes claims that can’t be tested, it can be ignored."

"It is curious that those who claim such firm knowledge about God’s nature and works become silent when asked about God’s methods."

"That doesn’t mean that the religious completely abjure evidence. If it supports their preconceptions, they’ll accept it."

"When facing “scientific” arguments for God like these, ask yourself three questions. First, what’s more likely: that these are puzzles only because we refuse to see God as an answer, or simply because science hasn’t yet provided a naturalistic answer? In other words, is the religious explanation so compelling that we can tell scientists to stop working on the evolution and mechanics of consciousness, or on the origin of life, because there can never be a naturalistic explanation? Given the remarkable ability of science to solve problems once considered intractable, and the number of scientific phenomena that weren’t even known a hundred years ago, it’s probably more judicious to admit ignorance than to tout divinity. Second, if invoking God seems more appealing than admitting scientific ignorance, ask yourself if religious explanations do anything more than rationalize our ignorance. That is, does the God hypothesis provide independent and novel predictions or clarify things once seen as puzzling—as truly scientific hypotheses do? Or are religious explanations simply stop-gaps that lead nowhere?...Does invoking God to explain the fine-tuning of the universe explain anything else about the universe? If not, then that brand of natural theology isn’t really science, but special pleading. Finally, even if you attribute scientifically unexplained phenomena to God, ask yourself if the explanation gives evidence for your God—the God who undergirds your religion and your morality. If we do find evidence for, say, a supernatural origin of morality, can it be ascribed to the Christian God, or to Allah, Brahma, or any one god among the thousands worshipped on Earth? I’ve never seen advocates of natural theology address this question."

"Of course, atheism, which is merely the lack of belief in gods, isn’t responsible for explaining altruism and ethics, a task that properly belongs to philosophy, science, and psychology. And those areas have offered plenty of nonreligious explanations for the “Moral law” and altruism. The explanations involve evolution, reason, and education."

"So if morality is innate, it’s certainly malleable."

"The rapid change in many aspects of morality, even in the last century, also suggests that much of its “innateness” comes not from evolution but from learning. That’s because evolutionary change simply doesn’t occur fast enough to explain societal changes like our realization that women are not an inferior moiety of humanity, or that we shouldn’t torture prisoners. The explanation for these changes must reside in reason and learning: our realization that there is no rational basis for giving ourselves moral privilege over those who belong to other groups."