On the error of failing to appreciate your opponents' three-dimensionality:

They had cliche answers but only to their self-created straw-men. To exaggerate only slightly, they had never talked to anyone who really believed, and had thought deeply about, views drastically different from their own. As a result, when they heard real arguments instead of caricatures, they had no answers, only amazement that such views could be expressed by someone who had the external characteristics of being a member of the intellectual community, and that such views could be defended with apparent cogency. Never have I been more impressed with the advice I once received: "You cannot be sure that you are right unless you understand the arguments against your views better than your opponents do."

Source: Milton Friedman, "Schools at Chicago," from The Indispensable Milton Friedman

H/T David Henderson at EconLog

Note: The final sentence of the passage, as presented by Henderson, is missing closing quotation marks. I have added them.

Let me differentiate between scientific method and the neurology of the individual scientist. Scientific method has always depended on feedback [or flip-flopping as the Tsarists call it]; I therefore consider it the highest form of group intelligence thus far evolved on this backward planet. The individual scientist seems a different animal entirely. The ones I've met seem as passionate, and hence as egotistic and prejudiced, as painters, ballerinas or even, God save the mark, novelists. My hope lies in the feedback system itself, not in any alleged saintliness of the individuals in the system.

Robert Anton Wilson

Therefore, the first and most important duty of philosophy is to test impressions, choosing between them and only deploying those that have passed the test. You know how, with money--an area where we believe our interest to be at stake--we have developed the art of assaying, and considerable ingenuity has gone into developing a way to test if coins are counterfeit, involving our senses of sight, smell, hearing, and touch. The assayer will let the denarius drop and listen intently to its ring; and he is not satisfied to listen just once: after repeated listenings he practically acquires a musician's subtle ear. It is a measure of the effort we are prepared to expend to guard against deception when accuracy is at a premium.

When it comes to our poor mind, however, we can't be bothered; we are satisfied accepting any and all impressions, because here the loss we suffer is not obvious. If you want to know just how little concerned you are about things good and bad, and how serious about things indifferent, compare your attitude to going blind with your attitude about being mentally in the dark. You will realize, I think, how inappropriate your values really are.

Epictetus, Discourses I.20.7-12 (pages 51-52 of this edition) (original Greek, with alternate translations at the link)

Edited to correct a typo.

Often a person uses some folk proverb to explain a behavioral event even though, on an earlier occasion, this same person used a directly contradictory folk proverb to explain the same type of event. For example, most of us have heard or said, “look before you leap.” Now there’s a useful, straightforward bit of behavioral advice—except that I vaguely remember admonishing on occasion, “he who hesitates is lost.” And “absence makes the heart grow fonder” is a pretty clear prediction of an emotional reaction to environmental events. But then what about “out of sight, out of mind”? And if “haste makes waste,” why do we sometimes hear that “time waits for no man”? How could the saying “two heads are better than one” not be true? Except that “too many cooks spoil the broth.” If I think “it’s better to be safe than sorry,” why do I also believe “nothing ventured, nothing gained”? And if “opposites attract,” why do “birds of a feather flock together”? I have counseled many students to “never to put off until tomorrow what you can do today.” But I hope my last advisee has never heard me say this, because I just told him, “cross that bridge when you come to it.”

The enormous appeal of clichés like these is that, taken together as implicit “explanations” of behavior, they cannot be refuted. No matter what happens, one of these explanations will be cited to cover it. No wonder we all think we are such excellent judges of human behavior and personality. We have an explanation for anything and everything that happens. Folk wisdom is cowardly in the sense that it takes no risk that it might be refuted.

Keith E. Stanovich, How to Think Straight About Psychology, 10th ed. (2013), 14.

ETA: Should have included the subsequent paragraph:

That folk wisdom is “after the fact” wisdom, and that it actually is useless in a truly predictive sense, is why sociologist Duncan Watts titled one of his books: Everything Is Obvious—Once You Know the Answer (2011). Watts discusses a classic paper by Lazarsfeld (1949) in which, over 60 years ago, he was dealing with the common criticism that “social science doesn’t tell us anything that we don’t already know.” Lazarsfeld listed a series of findings from a massive survey of 600,000 soldiers who had served during World War II; for example, that men from rural backgrounds were in better spirits during their time of service than soldiers from city backgrounds. People tend to find all of the survey results to be pretty obvious. In this example, for instance, people tend to think it obvious that rural men would have been used to harsher physical conditions and thus would have adapted better to the conditions of military life. It is likewise with all of the other findings—people find them pretty obvious. Lazarsfeld then reveals his punchline: All of the findings were the opposite of what was originally stated. For example, it was actually the case that men from city backgrounds were in better spirits during their time of service than soldiers from rural backgrounds. The last part of the learning exercise is for people to realize how easily they would have explained just the opposite finding. In the case of the actual outcome, people tend to explain it (when told of it first) by saying that they expected it because city men are used to working in crowded conditions and under hierarchical authority. They never realize how easily they would have concocted an explanation for exactly the opposite finding.

A Bet is a Tax on Bullshit

Alex Tabarrok

I've never heard more different explanations for anything parents tell kids than why they shouldn't swear. Every parent I know forbids their children to swear, and yet no two of them have the same justification. It's clear most start with not wanting kids to swear, then make up the reason afterward.

-Paul Graham in The Lies We Tell Kids

Slogans like “practice random acts of kindness” feel good and are easy to put into practice. But if we don’t take our activism more seriously than that, our motive is probably a desire to feel good about ourselves, to help ourselves or those close to us, or to act out our self-identity. The endpoint of authentic compassion is a desire to do the most good that one can, to be as effective as possible in creating a world with less suffering and destruction and more joy. Figuring out how we can do the most good takes careful thought over a long period of time, and it means moving into new and possibly uncomfortable areas of advocacy. But the importance of taking our activism seriously and approaching it from this utilitarian perspective cannot be overstated. It will mean a difference between life and death, between happiness and suffering, for thousands of people, for thousands of acres of the ecosystem, and for tens of thousands of animals.

Nick Cooney, Change of Heart

In which Winnie-the-Pooh tests a hypothesis about the animal tracks that he is following through the woods:

“Wait a moment,” said Winnie-the-Pooh, holding up his paw.

He sat down and thought, in the most thoughtful way he could think. Then he fitted his paw into one of the Tracks…and then he scratched his nose twice, and stood up.

“Yes,” said Winnie-the Pooh.

“I see now,” said Winnie-the-Pooh.

“I have been Foolish and Deluded,” said he, “and I am a Bear of No Brain at All.”

• A. A. Milne (via John Regehr)

It is neither desirable nor any longer effective to try bullying people into accepting the authority of science. Instead, all members of the educated public can be invited to participate in science, in order to experience the true nature and value of scientific inquiry. This does not mean listening to professional scientists tell condescending stories about how they have discovered wonderful things, which you should believe for reasons that are too difficult for you to understand in real depth and detail. Doing science ought to mean asking your own questions, making your own investigations, and drawing your own conclusions for your own reasons. Of course it will not be feasible to advance the "cutting edge" or "frontier" of modern science without first acquiring years of specialist training. However, the cutting edge is not all there is to science, nor is it necessarily the most valuable part of science. Questions that have been answered are still worth asking again, so you can understand for yourself how to arrive at the standard answers, and possibly discover new answers or recover forgotten answers that are valuable.

Hasok Chang, Inventing Temperature: Measurement and Scientific Progress

If we see in each generation the conflict of the future against the past, the fight of what might be called progressive versus reactionary, we shall find ourselves organizing the historical story upon what is really an unfolding principle of progress, and our eyes will be fixed upon certain people who appear as the special agencies of that progress. [...] But if we see in each generation a clash of wills out of which there emerges something that probably no man ever willed, our minds become concentrated upon the process that produced such an unpredictable issue, and we are more open for an intensive study of the motions and interactions that underlie historical change. [...] The process of the historical transition will then be recognized to be unlike what the whig historian seems to assume – much less like the procedure of a logical argument and perhaps much more like the method by which a man can be imagined to work his way out of a "complex". It is a process which moves by mediations and those mediations may be provided by anything in the world – by men’s sins or misapprehensions or by what we can only call fortunate conjunctures. Very strange bridges are used to make the passage from one state of things to another; we may lose sight of them in our surveys of general history, but their discovery is the glory of historical research. History is not the study of origins; rather it is the analysis of all the mediations by which the past was turned into our present.

-- Herbert Butterfield, The Whig Interpretation of History

The folly of mistaking a paradox for a discovery, a metaphor for a proof, a torrent of verbiage for a spring of capital truths, and oneself for an oracle, is inborn in us.

Paul Valéry

Diogenes was knee deep in a stream washing vegetables. Coming up to him, Plato said, "My good Diogenes, if you knew how to pay court to kings, you wouldn't have to wash vegetables."

"And," replied Diogenes, "If you knew how to wash vegetables, you wouldn't have to pay court to kings."

Teachings of Diogenes

People say "think outside the box," as if the box wasn't a fucking great idea.

Sean Thomason

By the time one is consciously aware of something, the brain has already done the work.

--Michael Gazzaniga

Besides being fascinating in its own right, such exotic finds are a good test of astronomers’ theories about how planets form. In PH1’s case, its four stars are actually a pair of binaries. Conventional planetary-formation theory holds that worlds condense out of a disc of dust and rubble early in a star’s life. But in this case, “the second binary would sit right at the edge of the protoplanetary disc,” notes Dr Lintott. Computer models suggest that the gravitational influence of the second pair of stars ought to disrupt the disc and prevent the formation of planets. Reality, in this case, disagrees with the models—and that is how science advances.

Source: The Economist's "Babbage" blog, in a post on exoplanets

(Of course, science advances when reality agrees with models too.)

Edited to remove "emphasis added" from the quotation, which I had added originally but have since decided against.

In a man whose reasoning powers are good, fallacious arguments are evidence of bias.

--Bertrand Russell, "Philosophy's Ulterior Motives". (The context is Descartes' philosophy and the obviously fallacious proofs he offers of the existence of God and the external world.)

If any idiot ever tells you that life would be meaningless without death, Hyperion corporation recommends killing them.

--Borderlands 2

As the philosopher David Schmidtz says, if your main goal is to show that your heart is in the right place, then your heart is not in the right place.

Jason Brennan, Libertarianism: What Everyone Needs to Know

What does Magritte mean when he says "This is not a pipe"? It sure looks like a pipe. But step back for a moment: what is the definition of the thing you are looking at? The thing you are looking at is not a pipe. The thing you are looking at is a picture. ... You see, if it were actually a pipe, you could stuff tobacco in it, smoke it, etc. But you cannot do anything like that with it. This is not a pipe. It's a picture.

We generally figure this out when we're growing up. You have a Teddy Bear. When you're a child, perhaps you very adorably treat Rupert as if he were "Bear: Subtype Stuffed". But that isn't really true! Rupert is not any kind of a bear at all, and has no actual connection to Ursus. In reality, the amusing childhood mistake is an inversion of the true state of affairs... Rupert is really a "Stuffed Toy: Subtype Bear".

Likewise, Magritte's treacherous pipe is not a "Pipe: Subtype Picture". Rather, it is a "Picture: Subtype Pipe".

Here's another fine example: consider trips to Rome. You can have an expensive trip to Rome, a long trip to Rome, a pious trip to Rome, etc. Some trips to Rome can be several of these at once. There are all sorts of trips to Rome: religious trips, business trips, sightseeing trips, etc. But what about "imaginary" trips to Rome. You don't need a passport for those, do you? That's because an imaginary trip to Rome is not a kind of a trip to Rome! It's a kind of flight of fancy, one about Rome as opposed to being about something else.

http://forums.catholic.com/showpost.php?s=911f001b47b040ac5997321714c0244b&p=7081969&postcount=8

In the way that skepticism is sometimes applied to issues of public concern, there is a tendency to belittle, to condescend, to ignore the fact that, deluded or not, supporters of superstition and pseudoscience are human beings with real feelings, who, like the skeptics, are trying to figure out how the world works and what our role in it might be. Their motives are in many ways consonant with science. If their culture has not given them all the tools they need to pursue this great quest, let us temper our criticism with kindness. None of us comes fully equipped.

--Carl Sagan

"Look,” [Deutsch] went on, “I can’t stop you from writing an article about a weird English guy who thinks there are parallel universes. But I think that style of thinking is kind of a put-down to the reader. It’s almost like saying, If you’re not weird in these ways, you’ve got no hope as a creative thinker. That’s not true. The weirdness is only superficial."

New Yorker article on David Deutsch

(I saw this on Scott Aaronson's blog)

"His mother had often said, When you choose an action, you choose the consequences of that action. She had emphasized the corollary of this axiom even more vehemently: when you desired a consequence you had damned well better take the action that would create it." - Lois McMaster Bujold, writer (b. 1949)

Death does not concern us, because as long as we exist, death is not here. And when it does come, we no longer exist.

-Epicurus

I need help on this: I'm torn between finding this argument to be preposterous, and being unable to deny the premises or call the argument invalid.

After all, the essential point in running a risk is that the returns justify it.

-Sennett Forell, Foundation and Empire

Recognizing the startling resurgence in realism, Don Philahue (of The Don Philahue Show) invited a member of Realists Anonymous to bare his soul on television. After a brief introduction documenting the spread of realism, Philahue turned to his guest:

DP: What kinds of realism were you into, Hilary?

H: The whole bag, Don. I was a realist about logical terms, abstract entities, theoretical postulates - you name it.

DP: And causality, what about causality?

H: That too, Don. (Audience gasps.)

DP: I'm going to press you here, Hilary. Did you at any time accept moral realism?

H: (staring at feet): Yes.

DP: What effect did all this realism have on your life?

H: I would spend hours aimlessly wandering the streets, kicking large stones and shouting, "I refute you thus!" It's embarrassing to recall.

DP: There was worse, wasn't there Hilary?

H: I can't deny it, don. (Audience gasps.) Instead of going to work I would sit at home fondling ashtrays and reading voraciously about converging scientific theories. I kept a copy of "Hitler: A Study in Tyranny" hidden in the icebox, and when no one was around I would take it our and chant "The Nazis were bad. The Nazis were really bad."

-- A dialogue by Philip Gasper

Breaking: To surprise of pundits, numbers continue to be best system for determining which of two things is larger.

--xkcd.

Romana: You mean you didn't believe his story?

The Doctor: No.

Romana: But he had such an honest face.

The Doctor: Romana, you can't be a successful crook with a dishonest face, can you?

Doctor Who

The most astonishingly incredible coincidence imaginable would be the complete absence of all coincidences.

-- John Allen Paulos(from Beyond Numeracy)

The great thing about reality is that eventually you hit it.

Source: Andrew Sullivan in an otherwise fairly bland political post

You can't distinguish your group by doing things that are rational and believing things that are true. If you want to set yourself apart from other people you have to do things that are arbitrary and believe things that are false.

Paul Graham

If I have a Grand Unified Theory Of Everything, it's this: I believe that people always do things that make sense to them. Hard as it is to believe with all the hurting out there, almost nobody hurts others just to be a jerk. So if you want to change human behavior on a grand scale, you can't tell people "stop being a jerk." You have to dissect and then recreate their models of the world until being a jerk doesn't make sense.

Cliff Pervocracy

'At my funeral, I don't want people to wear bright colors and smile and laugh fondly at the wonderful memories of the precious time we spent together on Earth. Tell them to wear black and cover their faces with ash. Tell them to weep bitter tears and rail angrily against the cruel God who took me at so young an age. Do this for me, my beloved.'

http://www.theonion.com/articles/loved-ones-recall-local-mans-cowardly-battle-with,772/

I find both the ironic and straightforward meaning of this quote to be meaningful.

If any man pretend to me that God hath spoken to him … immediately, and I make doubt of it, I cannot easily perceive what argument he can produce to oblige me to believe it .. For to say that God … hath spoken to him in a dream is no more than to say he dreamed that God spoke to him.

Thomas Hobbes, Leviathan, Chapter 13

One swallow does not make a summer, but one swallow does prove the existence of swallows.

Anzai & Simon

When I am speaking to people about rationality or AI, and they ask something incomprehensibly bizarre and incoherent, I am often tempted to give the reply that Charles Babbage gave to those who asked him whether a machine that was given bad data would produce the right answers anyway:

I am not able rightly to apprehend the kind of confusion of ideas that could provoke such a question.

But instead I say, "Yes, that's an important question..." and then I steel-man their question, or I replace it with a question on an entirely different subject that happens to share some of the words from their original question, and I answer that question instead.

Chris Cillizza says that [...] the surge in the quantity of public polling available creates a confusing fog of numbers in which "partisans, who already live in a choose-your-own-political-reality world, can select the numbers that comply with their view of the race and pooh-pooh the data that suggest anything different."

That's true. But if you actually want to know what's happening in the race the increased poll volume makes it clearer not less clear. The sense that the polls are "all over the map" is the mistake. You need to think of each datapoint as having an associated probability distribution and then look at where they overlap. [...] The fact that we now have tons of polling that averages out to [a] conclusion means the scope for "sampling error" to throw us off is, at this point, tiny. One poll showing a lead of the current magnitude would leave us with a ton of uncertainty, but a bunch of polls makes the picture pretty clear.

• Matthew Yglesias

I am too much of a sceptic to deny the possibility of anything... but I don't see my way to your conclusion.

Thomas Huxley

Remember, kids, the only difference between screwing around and science is writing it down.

-- Adam Savage

Quote from Peter Watts' Blindsight.

About the prospects of a fight against a superintelligence:

Still, I could tell that Bates' presence was a comfort, to the Human members of the crew at least. If you have to go up unarmed against an angry T-rex with a four-digit IQ, it can't hurt to have a trained combat specialist at your side.

At the very least, she might be able to fashion a pointy stick from the branch of some convenient tree.

And then she said, "Ha ha ha, I figured out how to remove the closing quotation mark! From now on, the whole future is my story!

-Aristosophy. I like to think this is about the Robot's Rebellion.

On confirmation bias

If a man objects to truths that are all too evident, it is no easy task finding arguments that will change his mind. This is proof neither of his own strength nor of his teacher's weakness. When someone caught in an argument hardens to stone, there is just no more reasoning with them.

Epictetus, Discourses I.5.1-2 (page 15 of this edition) (original Greek, with alternate translations at the link)

A sound banker, alas, is not one who foresees danger and avoids it, but one who, when he is ruined, is ruined in a conventional way along with his fellows, so that no one can really blame him.

-John Maynard Keynes

"Because they were hypocrites," Finkle-McGraw said, after igniting his calabash and shooting a few tremendous fountains of smoke into the air, "the Victorians were despised in the late twentieth century. Many of the persons who held such opinions were, of course, guilty of the most nefandous conduct themselves, and yet saw no paradox in holding such views because they were not hypocrites themselves-they took no moral stances and lived by none."

"So they were morally superior to the Victorians-" Major Napier said, still a bit snowed under. "-even though-in fact, because-they had no morals at all." There was a moment of silent, bewildered head-shaking around the copper table.

"We take a somewhat different view of hypocrisy," Finkle-McGraw continued. "In the late-twentieth-century Weltanschauung, a hypocrite was someone who espoused high moral views as part of a planned campaign of deception-he never held these beliefs sincerely and routinely violated them in privacy. Of course, most hypocrites are not like that. Most of the time it's a spirit-is-willing, flesh-is-weak sort of thing."

"That we occasionally violate our own stated moral code," Major Napier said, working it through, "does not imply that we are insincere in espousing that code."

"Of course not," Finkle-McGraw said. "It's perfectly obvious, really. No one ever said that it was easy to hew to a strict code of conduct. Really, the difficulties involved-the missteps we make along the way are what make it interesting. The internal, and eternal, struggle, between our base impulses and the rigorous demands of our own moral system is quintessentially human. It is how we conduct ourselves in that struggle that determines how we may in time be judged by a higher power."

— Neal Stephenson, The Diamond Age

"Oh, sorry, I have this condition where I don't see or hear anything I disagree with."

"I had no idea that being human was a disease."

"A bad one! Everyone who contracts it eventually dies!"

Something Positive

The inhabitants of Florence in 1494 or Athens in 404 BCE could be forgiven for concluding that optimism just isn't factually true. For they knew nothing of such things as the reach of explanations or the power of science or even laws of nature as we understand them, let alone the moral and technological progress that was to follow when the Enlightenment got under way. At the moment of defeat, it must have seemed at least plausible to the formerly optimistic Athenians that the Spartans might be right, and to the formerly optimistic Florentines that Savonarola might be. Like every other destruction of optimism, whether in a whole civilization or in a single individual, these must have been unspeakable catastrophes for those who had dared to expect progress. But we should feel more than sympathy for those people. We should take it personally. For if any of those earlier experiments in optimism had succeeded, our species would be exploring the stars by now, and you and I would be immortal.

David Deutsch, The Beginning of Infinity

The ideas of economists and political philosophers, both when they are right and when they are wrong, are more powerful than is commonly understood. Indeed the world is ruled by little else. Practical men, who believe themselves to be quite exempt from any intellectual influence, are usually the slaves of some defunct economist. Madmen in authority, who hear voices in the air, are distilling their frenzy from some academic scribbler of a few years back.

John Maynard Keynes

Previously quoted on LW, but not in a quotes thread. I was reminded of it by this exchange.

Philosophy is like being in a dark room and looking for a black cat. Metaphysics is like being in a dark room and looking for a black cat that isn't there. Theology is like being in a dark room and looking for a black cat that isn't there and shouting "I found it!" Science is like being in a dark room and looking for a black cat using a flashlight.

Anonymous

So the first lesson about trusting your senses is: don't. Just because you believe something to be true, just because you know it's true, that doesn't mean it is true. The most important maxim for fighter pilots is "Trust your instruments."

--David Eagleman

"The boundary between these 2 classes [the Eloi & Morlocks] is more porous than I've made it sound. I'm always running into regular dudes - construction workers, auto mechanics, taxi drivers, galoots in general - who were largely aliterate until something made it necessary for them to become readers and start actually thinking about things. Perhaps they had to come to grips with alcoholism, perhaps they got sent to jail, or came down with a disease, or suffered a crisis in religious faith, or simply got bored. Such people can get up to speed on particular subjects quite rapidly. Sometimes their lack of a broad education makes them over-apt to go off on intellectual wild goose chases, but, hey, at least a wild goose chase gives you some exercise."

--Neal Stephenson, In the Beginning Was... the Commandline

The last project that I worked on with [Richard Feynman] was in simulated evolution. I had written a program that simulated the evolution of populations of sexually reproducing creatures over hundreds of thousands of generations. The results were surprising in that the fitness of the population made progress in sudden leaps rather than by the expected steady improvement. The fossil record shows some evidence that real biological evolution might also exhibit such "punctuated equilibrium," so Richard and I decided to look more closely at why it happened. He was feeling ill by that time, so I went out and spent the week with him in Pasadena, and we worked out a model of evolution of finite populations based on the Fokker Planck equations. When I got back to Boston I went to the library and discovered a book by Kimura on the subject, and much to my disappointment, all of our "discoveries" were covered in the first few pages. When I called back and told Richard what I had found, he was elated. "Hey, we got it right!" he said. "Not bad for amateurs."

From "Richard Feynman and The Connection Machine"

Girl 1: Because distance is infinitely divisible, if you assign number pairs to each letter of the alphabet, you can specify any string of letters just by pointing to a very specific place on this centimeter and getting its decimal output. In fact, that sentence I just said is at a particular point on the centimeter, as was this one, and whatever you or I say in the future. The centimeter has read every book there will ever be and knows every scientific fact that can be. It knows the future of our friendship. It knows how we'll die. It knows how the universe ends and how it began.

Girl 2: What's the point of doing anything then?

Girl 1: Well, the centimeter also "knows" a bunch of crazy stuff.

Centimeter callouts: "2+2=3" "Up is down, rotated 90 degrees" "Ponies aren't awesome"

Girl 2: So I know infinity less than the centimeter, but have infinity better discretion.

Girl 1: Yeah, that's basically your life. You know relatively no information, but you're relatively great at using it.

Girl 2: I bet if I tell Bobby about this, he'll like me.

Girl 1: Well, you're okay at using it.

--Saturday Morning Breakfast Cereal

Be more than good; be good for something

Henry David Thoreau

Three years ago...I learned that people to whom I defer, and whose authority over my actions is hardly less than that of my own reason over my thoughts, had disapproved of a hypothesis in the field of physics that had been proposed somewhat earlier by another person. I do not want to say that I had accepted that hypothesis...This occurrence was enough to make me change my resolution to publish the treatise...

(Knowledge of "bodies" in the sense of matter) would not only be desirable in bringing about the invention of an infinity of devices to enable us to enjoy the fruits of agriculture and all the wealth of the earth without labor, but even more so in conserving health, the principal good and the basis of all other goods in this life. For the mind is so dependent upon the humors and the condition of the organs of the body that if it is possible to find some way to make men in general wiser and more clever than they have been so far, I believe that it is in medicine that it should be sought. It is true that medicine at present contains little of such great value; but without intending to belittle it, I am sure that everyone, even among those who follow the profession, will admit that everything we know is almost nothing compared with what remains to be discovered, and that we might rid ourselves of an infinity of maladies of body as well as of mind, and perhaps also of the enfeeblement of old age, if we had sufficient understanding of the causes and of all the remedies which nature has provided.

-Descartes, Discourse on method part 6.

Men, it has been well said, think in herds; it will be seen that they go mad in herds, while they only recover their senses slowly, and one by one.

Charles Mackay from "Extraordinary Popular Delusions and the Madness of Crowds"

A heckler in the crowd shouted out, "My mind is not made like that, I can't be bothered with philosophy."

"Why do you bother to live," Diogenes retorted, "if you can't be bothered to live properly?"

Teachings of Diogenes

He who would do good to another must do it in Minute Particulars: General Good is the plea of the scoundrel, hypocrite and flatterer.

William Blake

The question I pose to you is simple. Who is to be the master, you or the bits of talented meat that secrete hormones for you? Your glands are the product of aeons of evolution, and they are not to be scorned, but neither are they to be obeyed blindly.

--Prime Function Aki Zeta-Five, Sid Meier's Alpha Centauri

The man who never alters his opinion is like standing water, and breeds reptiles of the mind.

William Blake

From moment to moment, different modules or systems compete for attention and the winner serves as the neural system underlying that moment of conscious experience.

--Michael Gazzaniga

Regarding brain architecture.

The Last Psychiatrist bats another one out of the park:

So start with an interesting hypothetical: does everybody need to work anymore? I understand work from an ethical/character perspective, this is not here my point. Since we no longer need e.g. manufacturing jobs-- cheaper elsewhere or with robots-- since those labor costs have evaporated, could that surplus go towards paying people simply to stay out of trouble? [...] Let me be explicit: my question is not should we do this, my question is that since this is precisely what's happening already, is it sustainable? What is the cost? I don't have to run the numbers, someone already has: it's $150/mo for a college grads, i.e. the price of food stamps. Other correct responses would be $700/mo for "some high school" (SSI) or $1500/mo for "previous work experience" (unemployment). I would have accepted $2000/mo for "minorities" (jail) for partial credit.

In fact, we come to associate having to expend effort and do things with our work, and associate relaxing and not doing anything with leisure time. So, because many of us don't like our jobs, we tend to associate having to do things with being unhappy, while happiness, as far as we ever know it, means... not doing anything. We never act for ourselves, because we spend our whole days acting for other people, and we think that acting and working hard always leads to unhappiness; our idea of happiness is not having to act, being on permanent vacation.

And this is ultimately why so many of us are so unhappy: because happiness is not doing nothing, happiness is acting creatively, doing things, working hard on things you care about. Happiness is becoming an excellent long-distance runner, falling in love, cooking an original recipe for people you care about, building a bookshelf, writing a song. There is no happiness to be found in merely lying on a couch—happiness is something that we must pursue. We are not unhappy because we have to do things, we are unhappy because all the things we do are things we don't care about. And because our jobs exhaust us and mislead us about what we want, they are the source of much of our unhappiness.

CrimethInc (Not exactly a bastion of rationality, but they do have some good stuff now and again.)

Two, you can use this corpus to conduct a very interesting exercise: you can triangulate. This is an essential skill in defensive historiography. If you like UR, you like defensive historiography.

Historiographic triangulation is the art of taking two or more opposing positions from the past, and using hindsight to decide who was right and who was wrong. The simplest way to play the game is to imagine that the opponents in the debate were reanimated in 2008, informed of present conditions, and reunited for a friendly panel discussion. I'm afraid often the only conceivable result is that one side simply surrenders to the other.

--Mencius Moldbug on an experiment that has interesting results

As soon as an Analytical Engine exists, it will necessarily guide the future course of the science.

Charles Babbage

There is always an easy solution to every human problem — neat, plausible, and wrong.

H.L. Mencken

On the bottom line(http://lesswrong.com/lw/js/thebottomline/)/[politics as a mindkiller:

This is a practical country. We have ideals; we have philosophies. But the problem with any ideology is, it gives the answer before you look at the evidence. [Stewart: Right.] So you have to mold the evidence to get the answer that you've already decided you've got to have. It doesn't work that way.

Source: Bill Clinton, in an appearance on The Daily Show with Jon Stewart (episode date: September 20, 2012). The quoted material appears at about the 6:50 mark.

Over a half century ago, while I was still a child, I recall hearing a number of old people offer the following explanation for the great disasters that had befallen Russia: "Men have forgotten God; that's why all this has happened." Since then I have spent well-nigh 50 years working on the history of our revolution; in the process I have read hundreds of books, collected hundreds of personal testimonies, and have already contributed eight volumes of my own toward the effort of clearing away the rubble left by that upheaval. But if I were asked today to formulate as concisely as possible the main cause of the ruinous revolution that swallowed up some 60 million of our people, I could not put it more accurately than to repeat: "Men have forgotten God; that's why all this has happened."

--Aleksandr Solzhenitsyn

Rationality challenge: Understand why I posted it here.

Bonsu Rationality Challenge: Reinvent the meaning of "God" I used to ironman the position. Start by ironmaning it yourself.