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April 10, 2026
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"So if morality is innate, itâs certainly malleable."
"The rapid change in many aspects of morality, even in the last century, also suggests that much of its âinnatenessâ comes not from evolution but from learning. Thatâs because evolutionary change simply doesnât occur fast enough to explain societal changes like our realization that women are not an inferior moiety of humanity, or that we shouldnât 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."
"But some of our moral behaviors, if not sentiments, almost certainly evolved. Evidence for that comes from finding parallels between the behavior of our own species and that of our relatives."
"But the God hypothesis for morality and altruism has its own problems. It fails, for example, to specify exactly which moral judgments were instilled in people by God and which, if any, might rest on secular reason. It doesnât explain why slavery, torture, and disdain for women and strangers were considered proper behaviors not too long ago, but are now seen as immoral. For if anything is true, God-given morality should remain constant over time and space. In contrast, if morality reflects a malleable social veneer on an evolutionary base, it should change as society changes. And it has."
"While our view of the world is filtered through our senses, evolution has, by and large, molded those senses to perceive the world accurately, for thereâs a severe penalty to be paid for seeing things wrongly. That holds not only for the external environment, but also for the character of others. Without accurate perceptions, we couldnât find food, avoid predators and other dangers, or form harmonious social groups. And following those perceptions is indeed the pursuit of âtrue beliefsâ: beliefs based on evidence. Natural selection doesnât mold true beliefs; it molds the sensory and neural apparatus that, in general, promotes the formation of true beliefs."
"It doesnât trivialize morality to argue that it is based on evolution and secular reason."
"When one has a religious experience, what is âtrueâ is only that one has had that experience, not that its contents convey anything about reality."
"Can you prove that leprechauns donât live in my garden? Well, not absolutely, but if you never see one, and they have no effects, than you can provisionally conclude that they donât exist. And so it is with all the fanciful features and creatures we firmly believe donât exist."
"Putting all this together, we see that religion is like Saganâs invisible dragon. The missing evidence for any god is simply too glaring, and the special pleading too unconvincing, to make its existence anything more than a logical possibility. Itâs reasonable to conclude, provisionally but confidently, that the absence of evidence for God is indeed evidence for his absence."
"Scienceâs results alone justify its usefulness, for it is, hands down, the single best way weâve devised to understand the universe."
"The conflation of faith as âunevidenced beliefâ with its vernacular use as âconfidence based on experienceâ is simply a word trick used to buttress religion."
"The orderliness of natureâthe so-called set of natural lawsâis not an assumption but an observation."
"Accommodationists further accuse scientists of having âfaith in reason.â Yet reason is not an a priori assumption, but a tool thatâs been shown to work. We donât have faith in reason; we use reason, and we use it because it produces results and progressive understanding... Reason is simply the way we justify our beliefs, and if youâre not using it, whether youâre justifying religious or scientific beliefs, you deserve no oneâs attention."
"Isnât science, as some maintain, based on a âfaithâ that itâs good to pursue the truth? Hardly. The notion that knowledge is better than ignorance is not a quasi-religious faith, but a preference: we prefer to know the truth because accepting whatâs false doesnât give us useful answers about the universe."
"Every bit of truth clawed from nature over the last four centuries has involved completely ignoring God, for even religious scientists park their faith at the laboratory door."
"As the journalist Nick Cohen noted about accusations that atheism is like religion, âItâs not a charge Iâd throw around if I were seeking to defend faith. When people say of dozens of political and cultural movements from monetarism to Marxism that their followers treat their cause âlike a religion,â they never mean it as a compliment. They mean that dumb obedience to higher authority and an obstinate attachment to dogma mark its adherents.â"
"Most religions, and certainly the Abrahamic ones, have three features that are foreign to science. The most important is religionâs linkage to moral codes that define and enforce proper behavior, behavior supposedly reflecting Godâs will. The second is the widespread belief in eternal reward and punishment: the notion that after death not just your fate but everyone elseâs depends on adherence to conduct mandated by your religion. And the third is the notion of absolute truth: that the nature of your god, and what it wants, is unchanging. While some believers see their ability to fathom Godâs nature as limited, and donât accept the notion of a heaven or hell, the certainty of religious dogma is ar more absolute and far less provisional than the pronouncements of science. This combination of certainty, morality, and universal punishment is toxic. It is what leads many believers not only to accept unenlightened views, like the disenfranchisement of women and gays, opposition to birth control, and intrusions into peopleâs private sex lives, but also to force those views on others, including their own children and society at large, and sometimes even to kill those who disagree."
"For good people to do evil doesnât require only religion, or even any religion, but simply one of its key elements: belief without evidenceâin other words, faith. And that kind of faith is seen not just in religion, but in any authoritarian ideology that puts dogma above truth and frowns on dissent."
"Science has a huge advantage over âother ways of knowingâ: built-in methods of self-correction."
"But none of this criticism of science makes religion even a tiny bit more credible... In contrast, religion has never been right in its claims about the universeâat least not in a way that all rational people can accept. There is no reliable method to show that the Trinity exists, that God is loving and all-powerful, that weâll meet our dead relatives in the afterlife, or that Brahma created the universe from a golden egg. Lacking a way to show its tenets are wrong, religion cannot show them to be right, even provisionally."
"The harm, as Iâve said repeatedly, comes not from the existence of religion itself, but from its reliance on and glorification of faithâbelief, or, if you will, âtrustâ or âconfidenceââwithout supporting evidence. And faith, as employed in religion (and in most other areas), is a danger to both science and society. The danger to science is in how faith warps the public understanding of science: by arguing, for instance, that science is based just as strongly on faith as is religion; by claiming that revelation or the guidance of ancient books is just as reliable a guide to truth about our universe as are the tools of science; by thinking that an adequate explanation can be based on what is personally appealing rather than on what stands the test of empirical study."
"We're only a couple of hundreds of years into understanding that epilepsy is a neurological disease and not a demonic possession. We're only about 50 years into understanding that certain types of learning disabilities are micro malformations in the cortex in people with dyslexia and not laziness or lack of motivation. The vast majority of these factoids [presented in the book] are 10, 20 years old, and all that's gonna happen is we're gonna learn more and more of that stuff. And what we're going to learn more and more is to recognise extents to which we're biological organisms and our behaviours have to be evaluated in that realm. For my money, what that eventually does is make words like "soul" or "evil" utterly absurd and medieval, but it also makes words like "punishment" or "justice" very questionable, as well. I think it will require an enormous reshaping of how we think we deal with the most damaging of human behaviours, because none of it can be thought of outside the context of biology."
"Ecosystems majorly shape culture â but then that culture can be exported and persist in radically different places for millennia. Stated most straightforwardly, most of earthâs humans have inherited their beliefs about the nature of birth and death and everything in between and thereafter from preliterate Middle Eastern pastoralists."
"Oxytocin, the luv hormone, makes us more prosocial to Us and worse to everyone else. Thatâs not generic prosociality. Thatâs ethnocentrism and xenophobia."
"We build theologies around violence, elect leaders who excel at it, and in the case of so many women, preferentially mate with champions of human combat. When itâs the "right" type of aggression, we love it."
"The purpose of science in understanding who we are as humans is not to rob us of our sense of mystery, not to cure us of our sense of mystery. The purpose of science is to constantly reinvent and reinvigorate that mystery. To always use it in a context where we are helping people in trying to resist the forces of ideology that we are all familiar with."
"I am a reasonably emotional person, and I see no reason why that's incompatible with being a scientist. Even if we learn about how everything works, that doesn't mean anything at all. You can reduce how an impala leaps to a bunch of biomechanical equations. You can turn Bach into contrapuntal equations, and that doesn't reduce in the slightest our capacity to be moved by a gazelle leaping or Bach thundering. There is no reason to be less moved by nature around us simply because it's revealed to have more layers of complexity than we first observed. The more important reason why people shouldn't be afraid is, we're never going to inadvertently go and explain everything. We may learn everything about something, and we may learn something about everything, but we're never going to learn everything about everything. When you study science, and especially these realms of the biology of what makes us human, what's clear is that every time you find out something, that brings up ten new questions, and half of those are better questions than you started with."
"Orthodox Judaism has this amazing set of rules: everyday there's a bunch of strictures of things you're supposed to do, a bunch you're not supposed to do, and the number you're supposed to do is the same number as the number of bones in the body. The number that you're not supposed to do is the same number as the number of days in the year. The amazing thing is, nobody knows what the rules are! Talmudic rabbis have been scratching each others' eyes out for centuries arguing over which rules go into the 613. The numbers are more important than the content. It is sheer numerology."
"Western religions, all the leading religions, have this schizotypalism shot through them from top to bottom. It's that same exact principle: it's great having one of these guys, but we sure wouldn't want to have three of them in our tribe. Overdo it, and our schizotypalism in the Western religious setting is what we call a "cult," and there you are in the realm of a Charles Manson or a David Koresh or a Jim Jones. You can only do post-hoc forensic psychiatry on Koresh and Jones, but Charles Manson is a diagnosed paranoid schizophrenic. But get it just right, and people are gonna get the day off from work on your birthday for millennia to come. [laughter] This is great! I think this is the first time I've ever said that line without somebody getting up and leaving in a huff from the audience. It's very nice being here."
"In the 1930s an anthropologist named Paul Radin first described it as "shamans being half mad," shamans being "healed madmen." This fits exactly. It's the shamans who are moving separate from everyone else, living alone, who talk with the dead, who speak in tongues, who go out with the full moon and turn into a hyena overnight, and that sort of stuff. It's the shamans who have all this metamagical thinking. When you look at traditional human society, they all have shamans. What's very clear, though, is they all have a limit on the number of shamans. That is this classic sort of balanced selection of evolution. There is a need for this subtype â but not too many. The critical thing with schizotypal shamanism is, it is not uncontrolled the way it is in the schizophrenic. This is not somebody babbling in tongues all the time in the middle of the hunt. This is someone babbling during the right ceremony. This is not somebody hearing voices all the time, this is somebody hearing voices only at the right point. It's a milder, more controlled version. Shamans are not evolutionarily unfit. Shamans are not leaving fewer copies of their genes. These are some of the most powerful, honored members of society. This is where the selection is coming from. ⌠In order to have a couple of shamans on hand in your group, you're willing to put up with the occasional third cousin who's schizophrenic."
"Schizophrenics have a whole lot of trouble telling the level of abstraction of a story. They're always biased in the direction of interpreting things more concretely than is actually the case. You would take a schizopohrenic and say, "Okay, what do apples, bananas and oranges have in common?" and they would say, "They all are multi-syllabic words." You say "Well, that's true. Do they have anything else in common?" and they say, "Yes, they actually all contain letters that form closed loops." This is not seeing the trees instead of the forest, this is seeing the bark on the trees, this very concreteness."
"Why do we have schizophrenia in every culture on this planet? From an evolutionary perspective, schizophrenia is not a cool thing to have. ... Schizophrenia is not an adaptive trait. You can show this formally: schizophrenics have a lower rate of leaving copies of their genes in the next generation than unaffected siblings. By the rules, by the economics of evolution, this is a maladaptive trait. Yet, it chugs along at a one to two percent rate in every culture on this planet. So what's the adaptive advantage of schizophrenia? It has to do with a classic truism â this business that sometimes you have a genetic trait which in the full-blown version is a disaster, but the partial version is good news."
"We are not getting our ulcers being chased by Saber-tooth tigers, we're inventing our social stressors â and if some baboons are good at dealing with this, we should be able to as well. Insofar as we're smart enough to have invented this stuff and stupid enough to fall for it, we have the potential to be wise enough to keep the stuff in perspective."
"What's the punch line here? Physiologically, it doesn't come cheap being a bastard 24 hours a day."
"If a rat is a good model for your emotional life, you're in big trouble."
"Finish this lecture, go outside, and unexpectedly get gored by an elephant, and you are going to secrete glucocorticoids. There's no way out of it. You cannot psychologically reframe your experience and decide you did not like the shirt, here's an excuse to throw it out â that sort of thing."
"Most of us don't collapse into puddles of stress-related disease."
"The far-from-original point I will try to make now should seem obvious: There is an unsettling similarity between the rituals of the obsessive-compulsive and the rituals of the observantly religious."
"The notion of the psychopathology of the shaman works just as readily in understanding the roots of major Western religions as well."
"The ones who I train to become scientists go at it like the warriors they should be, overturning existing knowledge and reigning paradigms, each discovery a murder of their scientific ancestors. And if I have trained them well, I must derive whatever satisfaction I can from the inevitability of becoming their Oedipal target someday."
"We are a fine species with some potential. Yet we are racked by sickening amounts of violence. Unless we are hermints, we feel the threat of it, often as a daily shadow. And regardless of where we hide, should our leaders push the button, we will all be lost in a final global violence."
"This is a classic case of what is often called physics envy, the disease among scientists where the behavioral biologists fear their discipline lacks the rigor of physiology, the physiologists wish for the techniques of the biochemists, the biochemists covet the clarity of the answers revealed by molecular biologists, all the way down the down until you get to the physicists, who confer only with God."
"Get it wrong, and we call it a cult. Get it right, in the right time and the right place, and maybe, for the next few millennia, people won't have to go to work on your birthday."
"I love science, and it pains me to think that so many are terrified of the subject or feel that choosing science means that you cannot also choose compassion, or the arts, or be awed by nature. Science is not meant to cure us of mystery, but to reinvent and reinvigorate it."
"From the very moment of your life, culture is leaving an imprint on who you are."
"Like so many other animals, we have an often-frantic need to conform, belong, and obey. Such conformity can be markedly maladaptive, as we forgo better solutions in the name of the foolishness of the crowd."
"Physics is a wrong tool to describe living systems."
"Ionizing radiation has always been with us and will be for all foreseeable time. Our genetic system is probably well adjusted by natural selection to normal background radiation. Added radiation will increase the frequency of mutations; most of these will be harmful. Exposure to radiation in large amounts will increase malignant disease; small amounts may possibly do the same. In view of these potentially harmful effects every reasonable effort should be made to reduce the levels of ionizing radiation to which man is exposed to to the lowest levels that can reasonably be attained."
"We are, each one of us, ordained to live out our lives in the context of ultimate questions, such as: Why is there anything at all, rather than nothing? Where did the laws of physics come from? Why does the universe seem so strange? My response to such questions has been to articulate a covenant with Mystery. Others, of course, prefer to respond with answers, answers that often include a concept of god. These answers are by definition beliefs since they can neither be proven nor refuted. They may be gleaned from existing faith traditions or from personal search. God may be apprehended as a remote Author without present-day agency, or as an interested Presence with whom one can form a relationship, or as pantheistic â Inherent in All Things. The opportunity to develop personal beliefs in response to questions of ultimacy, including the active decision to hold no Beliefs at all, is central to the human experience. The important part, I believe, is that the questions be openly encountered. To take the universe on â to ask Why Are Things As They Are? â is to generate the foundation for everything else."
"Sex without death gets you single-celled algae and fungi; sex with a mortal soma gets you the rest of the eukaryotic creatures. Death is the price paid to have trees, and clams and birds and grasshoppers, and death is the price paid to have human consciousness, to be aware of all that shimmering awareness and all that love."