Daniel Dennett

"A faith, like a species, must evolve or go extinct when the environment changes. It is not a gentle process in either case. … It's nice to have grizzly bears and wolves living in the wild. They are no longer a menace; we can peacefully co-exist, with a little wisdom. The same policy can be discerned in our political tolerance, in religious freedom. You are free to preserve or create any religious creed you wish, so long as it does not become a public menace. We're all on the Earth together, and we have to learn some accommodation. … The message is clear: those who will not accommodate, who will not temper, who insist on keeping only the purest and wildest strain of their heritage alive, we will be obliged, reluctantly, to cage or disarm, and we will do our best to disable the memes they fight for. Slavery is beyond the pale. Child abuse is beyond the pale. Discrimination is beyond the pale. The pronouncing of death sentences on those who blaspheme against a religion (complete with bounties or reward for those who carry them out) is beyond the pale. It is not civilized, and it is owed no more respect in the name of religious freedom than any other incitement to cold-blooded murder. … That is — or, rather, ought to be, the message of multiculturalism, not the patronizing and subtly racist hypertolerance that "respects" vicious and ignorant doctrines when they are propounded by officials of non-European states and religions."

"[T]he only meaning of life worth caring about is one that can withstand our best efforts to examine it."

"Political correctness, in the extreme versions worthy of the name, is antithetical to almost all surprising advances in thought. We might call it eumemics, since it is, like the extreme eugenics of Social Darwinists, an attempt to impose myopically derived standards of safety and goodness on the bounty of nature. Few today — but there are a few — would brand all genetic counseling, all genetic policies, with the condemnatory title of eugenics."

"The task of the mind is to produce future, as the poet Paul Valéry once put it. A mind is fundamentally an anticipator, an expectation-generator. It mines the present for clues, which it refines with the help of the materials it has saved from the past, turning them into anticipations of the future. And then it acts, rationally, on the basis of those hard-won anticipations."

"Evolution embodies information in every part of every organism. … This information doesn't have to be copied into the brain at all. It doesn't have to be "represented" in "data structures" in the nervous system. It can be exploited by the nervous system, however, which is designed to rely on, or exploit, the information in the hormonal systems just as it is designed to rely on, or exploit, the information embodied in your limbs and eyes. So there is wisdom, particularly about preferences, embodied in the rest of the body. By using the old bodily systems as a sort of sounding board, or reactive audience, or critic, the central nervous system can be guided — sometimes nudged, sometimes slammed — into wise policies. Put it to the vote of the body, in effect. ...When all goes well, harmony reigns and the various sources of wisdom in the body cooperate for the benefit of the whole, but we are all too familiar with the conflicts that can provoke the curious outburst "My body has a mind of its own!" Sometimes, apparently, it is tempting to lump together some of the embodied information into a separate mind. Why? Because it is organized in such a way that it can sometimes make independent discriminations, consult preferences, make decisions, enact policies that are in competition with your mind. At such time, the Cartesian perspective of a puppeteer self trying desperately to control an unruly body-puppet is very powerful. Your body can vigorously betray the secrets you are desperately trying to keep — by blushing and trembling or sweating, to mention only the most obvious cases. It can "decide" that in spite of your well-laid plans, right now would be a good time for sex, not intellectual discussion, and then take embarrassing steps in preparation for a coup d'etat. On another occasion, to your even greater chagrin and frustration, it can turn a deaf ear on your own efforts to enlist it for a sexual campaign, forcing you to raise the volume, twirl the dials, try all manner of preposterous cajolings to persuade it."

"Animals are not just herbivores or carnivores. They are, in the nice coinage of the psychologist George Miller, informavores."

"[I]t makes little difference where we draw the line between the pruning and shaping [of behavior] by natural selection which is genetically transmitted to offspring (the wiring you are born with), and the pruning and shaping that later takes place in the individual (the rewiring you end up with, as a result of experience or training). Nature and nurture blend seamlessly together."

"[T]he Capgras delusion [is] a bizarre affliction that occasionally strikes human beings who have suffered brain damage. The defining mark of the Capgras delusion is the sufferer's conviction that a close acquaintance (usually a loved one) has been replaced by an impostor who looks like (and sounds like, and acts like) the genuine companion, who has mysteriously disappeared! … What is particularly surprising about these cases is that they don't depend on subtle disguises and fleeting glimpses. On the contrary, the delusion persists even when the target individual is closely scrutinized by the [Capgras sufferer], and is even pleading for recognition. Capgras sufferers have been known to murder their spouses, so sure are they that these look-alike interlopers are trying to step into their shoes — into whole lives — that are not rightfully theirs! There can be no doubt that in such a sad case, the [sufferer] in question has deemed true some very specific proposition of nonidentity: This man is not my husband; this man is a qualitatively similar to my husband as ever can be, and yet he is not my husband. Of particular interest to us is the fact that people suffering from such a delusion can be quite unable to say why they are so sure."

"Unpredictability is in general a fine protective feature, which should never be squandered but always spent wisely. There is much to be gained from communication if it is craftily doled out — enough truth to keep one's credibility high but enough falsehood to keep one's options open. (This is the first point of wisdom in the game of poker: he who never bluffs never wins; he who always bluffs always loses.)"

"It is commonly observed — but not commonly enough! — that old folks removed from their homes to hospital settings are put at a tremendous disadvantage, even though their basic bodily needs are well provided for. They often appear to be quite demented — to be utterly incapable of feeding, clothing, and washing themselves, let alone engaging in any activities of greater interest. Often, however, if they are returned to their homes, they can manage quite well for themselves. How do they do this? Over the years, they have loaded their home environments with ultrafamiliar landmarks, triggers for habits, reminder of what to do, where to find the food, how to get dressed, where the telephone is, and so forth. An old person can be a veritable virtuoso of self-help in such a hugely overlearned world, in spite of his or her brain's increasing imperviousness to new bouts of learning... Taking them out of their homes is literally separating them from large parts of their minds — potentially just as devastating a development as undergoing brain surgery."

"Of all the mind tools we acquire in the course of furnishing our brains from the stockpiles of culture, none are more important, of course, than words — first spoken, then written. Words make us more intelligent by making cognition easier, in the same way (many times multiplied) that beacons and landmarks make navigation in the world easier for simple creatures. Navigation in the abstract multidimensional world of ideas is simply impossible without a huge stock of movable, memorable landmarks that can be shared, criticized, recorded, and looked at from different perspectives."

"Every human mind you've ever looked at … is a product not just of natural selection but of cultural redesign of enormous proportions."

"The first stable conclusion I reached … was that the only thing brains could do was to approximate the responsivity to meanings that we presuppose in our everyday mentalistic discourse. When mechanical push comes to shove, a brain was always going to do what it was caused to do by current, local, mechanical circumstances, whatever it ought to do, whatever a God's-eye view might reveal about the actual meaning of its current states. But over the long haul, brains could be designed – by evolutionary processes – to do the right thing (from the point of view of meaning) with high reliability. … [B]rains are syntactic engines that can mimic the competence of semantic engines. … The appreciation of meanings – their discrimination and delectation – is central to our vision of consciousness, but this conviction that I, on the inside, deal directly with meanings turns out to be something rather like a benign "user-illusion"."

"We alone can be wracked with doubt, and we alone have been provoked by that epistemic itch to seek a remedy: better truth-seeking methods. Wanting to keep better track of our food supplies, our territories, our families, our enemies, we discovered the benefits of talking it over with others, asking questions, passing on lore. We invented culture. Then we invented measuring, and arithmetic, and maps, and writing. These communicative and recording innovations come with a built-in ideal: truth. The point of asking questions is to find true answers; the point of measuring is to measure accurately; the point of making maps is to find your way to your destination. … In short, the goal of truth goes without saying, in every human culture."

"Scientists are just as vulnerable to wishful thinking, just as likely to be tempted by base motives, just as venal and gullible and forgetful as the rest of humankind. Scientists don't consider themselves to be saints; they don't even pretend to be priests (who according to tradition are supposed to do a better job than the rest of us at fighting off human temptation and frailty). Scientists take themselves to be just as weak and fallible as anybody else, but recognizing those very sources of error in themselves and in the groups to which they belong, they have devised elaborate systems to tie their own hands, forcibly preventing their frailties and prejudices from infecting their results."

"The methods of science aren't foolproof, but they are indefinitely perfectible. Just as important: there is a tradition of criticism that enforces improvement whenever and wherever flaws are discovered. The methods of science, like everything else under the sun, are themselves objects of scientific scrutiny, as method becomes methodology, the analysis of methods. Methodology in turn falls under the gaze of epistemology, the investigation of investigation itself — nothing is off limits to scientific questioning. The irony is that these fruits of scientific reflection, showing us the ineliminable smudges of imperfection, are sometimes used by those who are suspicious of science as their grounds for denying it a privileged status in the truth-seeking department — as if the institutions and practices they see competing with it were no worse off in these regards. But where are the examples of religious orthodoxy being simply abandoned in the face of irresistible evidence? Again and again in science, yesterday's heresies have become today's new orthodoxies. No religion exhibits that pattern in its history."

"We live in a world that is subjectively open. And we are designed by evolution to be "informavores," epistemically hungry seekers of information, in an endless quest to improve our purchase on the world."

"..the point of a randomizing device like a coin flip, [is] to make the result uncontrollable by making it sensitive to so many variables that no feasible, finite list of conditions can be singled out as the cause."

"The salmon swimming upstream to spawn may be wily in a hundred ways, but she cannot even contemplate the prospect of abandoning her reproductive project and deciding instead to live out her days studying coastal geography or trying to learn Portuguese. The creation of a panoply of new standpoints is, to my mind, the most striking product of the euprimatic revolution."

"Since September 11, 2001, I have often thought that perhaps it was fortunate for the world that the attackers targeted the World Trade Center instead of the Statue of Liberty, for if they had destroyed our sacred symbol of democracy I fear we as Americans would have been unable to keep ourselves from indulging in paroxysms of revenge of a sort the world has never seen before. If that had happened, it would have befouled the meaning of the Statue of Liberty beyond any hope of subsequent redemption — if there were any people left to care. I have learned from my students that this upsetting thought of mine is subject to several unfortunate misconstruals, so let me expand on it to ward them off. The killing of thousands of innocents in the World Trade Center was a heinous crime, much more evil than the destruction of the Statue of Liberty would have been. And, yes, the World Trade Center was a much more appropriate symbol of al Qaeda's wrath than the Statue of Liberty would have been, but for that very reason it didn't mean as much, as a symbol, to us. It was Mammon and Plutocrats and Globalization, not Lady Liberty. I do suspect that the fury with which Americans would have responded to the unspeakable defilement of our cherished national symbol, the purest image of our aspirations as a democracy, would have made a sane and measured response extraordinarily difficult. This is the great danger of symbols — they can become too "sacred". An important task for religious people of all faiths in the twenty-first century will be spreading the conviction that there are no acts more dishonorable than harming "infidels" of one stripe or another for "disrespecting" a flag, a cross, a holy text."

"[W]hat good to us is the gods' knowledge if we can't get it from them? How could one communicate with the gods? Our ancestors (while they were alive!) stumbled on an extremely ingenious solution: divination.We all know how hard it is to make the major decisions of life: should I hang tough or admit my transgression, should I move or stay in my present position, should I go to war or not, should I follow my heart or my head? We still haven't figured out any satisfactory systematic way of deciding these things. Anything that can relieve the burden of figuring out how to make these hard calls is bound to be an attractive idea.Consider flipping a coin, for instance. Why do we do it? To take away the burden of having to find a reason for choosing A over B. We like to have reasons for what we do, but sometimes nothing sufficiently persuasive comes to mind, and we recognize that we have to decide soon, so we concoct a little gadget, an external thing that will make the decision for us. But if the decision is about something momentous, like whether to go to war, or marry, or confess, anything like flipping a coin would be just too, well, flippant.In such a case, choosing for no good reason would be too obviously a sign of incompetence, and, besides, if the decision is really that important, once the coin has landed you'll have to confront the further choice: should you honor your just-avowed commitment to be bound by the flip of the coin, or should you reconsider? Faced with such quandaries, we recognize the need for some treatment stronger than a coin flip. Something more ceremonial, more impressive, like divination, which not only tells you what to do, but gives you a reason (if you squint just right and use your imagination).Scholars have uncovered a comically variegated profusion of ancient ways of delegating important decisions to uncontrollable externalities. Instead of flipping a coin, you can flip arrows (belomancy) or rods (rhabdomancy) or bones or cards (sortilege), and instead of looking at tea leaves (tasseography), you can examine the livers of sacrificed animals (hepatoscopy) or other entrails (haruspicy) or melted wax poured into water (ceroscopy). Then there is moleosophy (divination by blemishes), myomancy (divination by rodent behavior), nephomancy (divination by clouds), and of course the old favorites, numerology and astrology, among dozens of others."

"The daily actions of religious people have accomplished uncounted good deeds throughout history, alleviating suffering, feeding the hungry, caring for the sick. Religions have brought the comfort of belonging and companionship to many who would otherwise have passed through this life all alone, without glory or adventure. They have not just provided first aid, in effect, for people in difficulties; they have provided the means for changing the world in ways that remove those difficulties. As Alan Wolfe says, "Religion can lead people out of cycles of poverty and dependency just as it led Moses out of Egypt". There is much for religion lovers to be proud of in their traditions, and much for all of us to be grateful for.The fact that so many people love their religions as much as, or more than, anything else in their lives is a weighty fact indeed. I am inclined to think that nothing could matter more than what people love. At any rate, I can think of no value that I would place higher. I would not want to live in a world without love. Would a world with peace, but without love, be a better world? Not if the peace was achieved by drugging the love (and hate) out of us, or by suppression. Would a world with justice and freedom, but without love, be a better world? Not if it was achieved by somehow turning us all into loveless law-abiders with none of the yearnings or envies or hatreds that are wellsprings of injustice and subjugation.It is hard to consider such hypotheticals, and I doubt if we should trust our first intuitions about them, but, for what it is worth, I surmise that we almost all want a world in which love, justice, freedom, and peace are all present, as much as possible, but if we had to give up one of these, it wouldn't — and shouldn't — be love. But, sad to say, even if it is true that nothing could matter more than love, it wouldn't follow from this that we don't have reason to question the things that we, and others, love. Love is blind, as they say, and because love is blind, it often leads to tragedy: to conflicts in which one love is pitted against another love, and something has to give, with suffering guaranteed in any resolution."

"Are zombies possible? They're not just possible, they're actual. We're all zombies.* Nobody is conscious – not in the systematically mysterious way that supports such doctrines as epiphenomenalism.* It would be an act of desperate intellectual dishonesty to quote this assertion out of context!"

"Minds are in limited supply, and each mind has a limited capacity for memes, and hence there is considerable competition among memes for entry in as many minds as possible. This competition is the major selective force in the memosphere, and, just as in the biosphere, the challenge has been met with great ingenuity. For instance, whatever virtues (from our perspective) the following memes have, they have in common the property of having phenotypic expressions that tend to make their own replication more likely by disabling or preempting the environmental forces that would tend to extinguish them: the meme for faith, which discourages the exercise of the sort of critical judgment that might decide that the idea of faith was, all things considered a dangerous idea; the meme for tolerance or free speech; the meme of including in a chain letter a warning about the terrible fates of those who have broken the chain in the past; the conspiracy theory meme, which has a built-in response to the objection that there is no good evidence of a conspiracy: "Of course not – that's how powerful the conspiracy is!" Some of these memes are "good" perhaps and others "bad"; what they have in common is a phenotypic effect that systematically tends to disable the selective forces arrayed against them. Other things being equal, population memetics predicts that conspiracy theory memes will persist quite independently of their truth, and the meme for faith is apt to secure its own survival, and that of the religious memes that ride piggyback on it, in even the most rationalistic environments. Indeed, the meme for faith exhibits frequency-dependent fitness: it flourishes best when it is outnumbered by rationalistic memes; in an environment with few skeptics, the meme for faith tends to fade from disuse."

"We really have to think of reasoning the way we think of romance, it takes two to tango. There has to be a communication."

"In fact, of course, science is an unparalleled playground of the imagination, populated by unlikely characters with wonderful names (messenger RNA, black holes, quarks) and capable of performing the most amazing deeds: sub-atomic whirling dervishes that can be in several places — everywhere and nowhere — at the same time; molecular hoop-snakes biting their own tails; self-copying spiral staircases bearing coded instructions; miniature keys searching for the locks in which they fit, on floating odysseys in a trillion synaptic gulfs."

"We now understand how very complex and even apparently intelligent phenomena, such as genetic coding, the immune system, and low-level visual processing, can be accomplished without a trace of consciousness. But this seems to uncover an enormous puzzle of just what, if anything, consciousness is for. Can a conscious entity do anything for itself that an unconscious (but cleverly wired up) simulation of that entity couldn't do for itself?"

"I think religion for many people is some sort of moral viagra."

"I was once interviewed in Italy and the headline of the interview the next day was wonderful. I saved this for my collection it was... "YES we have a soul but it's made of lots of tiny robots" and I thought that's exactly right. Yes we have a soul, but it's mechanical. But it's still a soul, it still does the work that the soul was supposed to do. It is the seat of reason. It is the seat of moral responsibility. It's why we are appropriate objects of punishment when we do evil things, why we deserve the praise when we do good things. It's just not a mysterious lump of wonder stuff... that will out live us."

"Not a single one of the cells that compose you knows who you are, or cares."

"Go ahead and believe in God, if you like, but don't imagine that you have been given any grounds for such a belief by science."

"For two things both to believe that snow is white, they need not to be physically similar in any specifiable way, but they must both be in a "functional" condition or state specifiable in the most functional language; they must share a Turing machine description according to which they are both in some particular logical state (which is roughly like two different computers having the same program and being in the same "place" in the program). … it is a type functionalism—each mental type is identifiable as a functional type in the language of Turing machine description."

"Homunculi are bogeymen only if they duplicate entire the talents they are rung in to explain. If one can get a team or committee of relatively ignorant, narrow-minded, blind homunculi to produce the intelligent behaviour of the whole, this is progress."

"The more I considered this answer, the more obviously true it appeared. But, strange to say, the more true it appeared, the less important the question to which it could be the true answer seemed. A sad, but not unprecedented, fate for a philosophical question to suffer."

"The distinction between responsible moral agents and beings with diminished or no responsibility is coherent, real, and important. It is coherent, even if in many instances it is hard to apply; it draws an empirically real line, in that we don't all fall on one side; and, most important, the distinction matters: the use we make of it plays a crucial role in the quality and meaning of our lives. [...] We want to hold ourselves and others responsible, but we recognize that our intuitions often support the judgement that a particular individual has "diminished responsibility" because of his or her infirmities, or because of particularly dire circumstances upon upbringing or at the time of action. We also find it plausible to judge that nonhuman animals, infants, and those who are severely handicapped mentally are not responsible at all. But since we are all more or less imperfect, will there be anyone left to be responsible after we have excused all those with good excuses? [...] We must set up some efficiently determinable threshold for legal competence, never for a moment supposing that there couldn't be intuitively persuasive "counterexamples" to whatever line we draw, but declaring in advance that such pleas will not be entertained. [...] The effect of such an institution [...] is to create [...] a class of legally culpable agents whose subsequent liability to punishment maintains the credibility of the sanctions of the laws. The institution, if it is to maintain itself, must provide for the fine tuning of its arbitrary thresholds as new information (or misinformation) emerges that might undercut its credibility. One can speculate that there is an optimal setting of the competence threshold (for any particular combination of social circumstances, degree of public sophistication, and so on) that maximizes the bracing effect of the law. A higher than optimal threshold would encourage a sort of malingering on the part of the defendants, which, if recognized by the populace, would diminish their respect for the law and hence diminish its deterrent effect. And a lower than optimal threshold would yield a diminishing return of deterrence and lead to the punishment of individuals who, in the eyes of society, "really couldn't help it." The public perception of the fairness of the law is a critical factor in its effectiveness."

"The trouble with the canons of scientific evidence [...] is that they virtually rule out the description of anything but oft-repeated, oft-observed, stereotypic behavior of a species, and this is just the sort of behavior that reveals no particular intelligence at all — all this behavior can be more or less plausibly explained as the effects of some humdrum combination of "instinct" or tropism and conditioned response. It is the novel bits of behavior, the acts that couldn't plausibly be accounted for in terms of prior conditioning or training or habit, that speak eloquently of intelligence; but if their very novelty and unrepeatability make them anecdotal and hence inadmissible evidence, how can one proceed to develop the cognitive case for the intelligence of one's target species?"

"Philosophers are never quite sure what they are talking about — about what the issues really are — and so often it takes them rather a long time to recognize that someone with a somewhat different approach (or destination, or starting point) is making a contribution."

"When a portion of the world comes in this way to compose a skein of narratives, that portion of the world is an observer. That is what it is for there to be an observer in the world, a something it is like something to be."

"The juvenile sea squirt wanders through the sea searching for a suitable rock or hunk of coral to cling to and make its home for life. For this task, it has a rudimentary nervous system. When it finds its spot and takes root, it doesn't need its brain anymore, so it eats it! (It's rather like getting tenure.)** The analogy between the sea squirt and the associate professor was first pointed out, I think, by the neuroscientist Rodolfo Llinas."

"I find it breathtaking […] that when musical composition competitions are held, the contestants often do not submit tapes or records (or live performances) of their works they submit written scored, and the judges confidently make their aesthetic judgements on the basis of just reading the scores and hearing the music in their minds. How good are the best musical imaginations? Can a trained musician, swiftly reading a score tell just how that voicing of dissonant oboes and flutes over the massed strings will sound?"

"A neurosurgeon once told me about operating on the brain of a young man with epilepsy. As is customary in this kind of operation, the patient was wide awake, under only local anesthesia, while the surgeon delicately explored his exposed cortex, making sure that the parts tentatively to be removed were not absolutely vital by stimulating them electrically and asking the patient what he experienced. Some stimulations provoked visual flashes or hand-raisings, others a sort of buzzing sensation, but one spot produced a delighted response from the patient: "It's 'Outta Get Me' by Guns N' Roses, my favorite heavy metal [sic] band!"I asked the neurosurgeon if he had asked the patient to sing or hum along with the music, since it would be fascinating to learn how "high fidelity" the provoked memory was. Would it be in exactly the same key and tempo as the record? Such a song (unlike "Silent Night") has one canonical version, so we could simply have superimposed a recording of the patient's humming with the standard record and compare the results. Unfortunately, even though a tape recorder had been running during the operation, the surgeon hadn't asked the patient to sing along. "Why not?" I asked, and he replied: "I hate rock music!"Later in the conversation the neurosurgeon happened to remark that he was going to have to operate again on the same young man, and I expressed the hope that he would just check to see if he could restimulate the rock music, and this time ask the fellow to sing along. "I can't do that," replied the neurosurgeon, "since I cut out that part." "It was part of the epileptic focus?" I asked, and he replied, "No, I already told you – I hate rock music.""

"Philosophers' Syndrome: mistaking a failure of the imagination for an insight into necessity."

"Up till now [the development of proto-consciousness], we can suppose, nervous systems solved the "Now what do I do?" problem by a relatively simple balancing act between a strictly limited repertoire of actions – if not the famous four F's (fight, flee, feed, or mate), then a modest elaboration of them."

""Bei einer Herztransplantation möchten wir nicht der Spender, sondern der Empfänger sein, aber bei einer Gehirntransplantation wären wir lieber der Spender"

"Man muss doch sehen, dass Gottes Rolle seit Äonen schrumpft. Anfangs wurde er noch für Adam und Eva gebraucht, dann hieß es, er habe die Evolution ins Rollen gebracht. Die Erkenntnisse der Kosmologie zeigen uns jedoch: Leben entwickelt sich überall dort, wo es kann. Gott kann keine neuen Arten erschaffen, er vollbringt keine Wunder, er passt auf keine Stellenausschreibung."

"Wir haben es mit einer Allianz aus evangelischen Fundamentalisten und rechten Politikern zu tun. Sie wollen in Amerika eine Gottesherrschaft errichten. Es ist erschreckend, dass viele von ihnen überzeugt sind, das Jüngste Gericht stehe kurz bevor."