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“It's a most peculiar psychology—this business of 'Science is based on faith too, so there!' Typically this is said by people who claim that faith is a good thing. Then why do they say 'Science is based on faith too!' in that angry-triumphal tone, rather than as a compliment? And a rather dangerous compliment to give, one would think, from their perspective. If science is based on 'faith', then science is of the same kind as religion—directly comparable. If science is a religion, it is the religion that heals the sick and reveals the secrets of the stars. It would make sense to say, 'The priests of science can blatantly, publicly, verifiably walk on the Moon as a faith-based miracle, and your priests' faith can't do the same.' Are you sure you wish to go there, oh faithist? Perhaps, on further reflection, you would prefer to retract this whole business of 'Science is a religion too!”
― Eliezer Yudkowsky, The Less Wrong Sequences

“You need one whole hell of a lot of rationality before it does anything but lead you into new and interesting mistakes.”
― Eliezer Yudkowsky, The Less Wrong Sequences

“Politics is an extension of war by other means. Arguments are soldiers. Once you know which side you're on, you must support all arguments of that side, and attack all arguments that appear to favor the enemy side; otherwise it's like stabbing your soldiers in the back - providing aid and comfort to the enemy. Politics is the Mind-Killer.”
― Eliezer Yudkowsky, The Less Wrong Sequences

“Once upon a time, there was a man who was convinced that he possessed a Great Idea. Indeed, as the man thought upon the Great Idea more and more, he realized that it was not just a great idea, but the most wonderful idea ever. The Great Idea would unravel the mysteries of the universe, supersede the authority of the corrupt and error-ridden Establishment, confer nigh-magical powers upon its wielders, feed the hungry, heal the sick, make the whole world a better place, etc. etc. etc.

The man was Francis Bacon, his Great Idea was the scientific method, and he was the only crackpot in all history to claim that level of benefit to humanity and turn out to be completely right.”
― Eliezer Yudkowsky, The Less Wrong Sequences

“I've seen people severely messed up by their own knowledge of biases. They have more ammunition with which to argue against anything they don't like. And that problem—too much ready ammunition—is one of the primary ways that people with high mental agility end up stupid, in Stanovich's "dysrationalia" sense of stupidity.”
― Eliezer Yudkowsky, The Less Wrong Sequences

“The goal of science is to amass such an enormous mountain of evidence that not even scientists can ignore it: and ... this is the distinguishing feature of a scientist; a non-scientist will ignore it anyway.”
― eliezer yudkowsky, The Less Wrong Sequences

“What I am trying to say is that more than your own life has to be at stake, before a person becomes desperate enough to resort to math.”
― Eliezer Yudkowsky, The Less Wrong Sequences

“There's a whole [...] art to finding the truth and accomplishing value from inside a human mind: we have to learn our own flaws, overcome our biases, prevent ourselves from self-deceiving, get ourselves into good emotional shape to confront the truth and do what needs doing, etcetera etcetera and so on.”
― Eliezer Yudkowsky, The Less Wrong Sequences

“We underestimate the power of science, and overestimate the power of personal observation. A peer-reviewed, journal-published, replicated report is worth far more than what you see with your own eyes. Our own eyes can deceive us. People can fool themselves, hallucinate, and even go insane. The controls on publication in major journals are more trustworthy than the very fabric of your brain. If you see with your own eyes that the sky is blue, and Science says it is green, then sir, I advise that you trust in Science.

This is not what most scientists will tell you, of course; but I think it is pragmatically true. Because in real life, what happens is that your eyes have a little malfunction and decide that the sky is green, and science will tell you that the sky is blue.”
― Eliezer Yudkowsky, The Less Wrong Sequences

“So much of a rationalist's skill is below the level of words. It makes for challenging work in trying to convey the Art through blog posts. People will agree with you, but then, in the next sentence, do something subdeliberative that goes in the opposite direction. Not that I'm complaining! A major reason I'm posting here is to observe what my words haven't conveyed.”
― Eliezer Yudkowsky, The Less Wrong Sequences

“The Way of Bayes is also an imprecise art, at least the way I'm holding forth upon it. These blog posts are still fumbling attempts to put into words lessons that would be better taught by experience. But at least there's underlying math, plus experimental evidence from cognitive psychology on how humans actually think. Maybe that will be enough to cross the stratospherically high threshold required for a discipline that lets you actually get it right, instead of just constraining you into interesting new mistakes.”
― Eliezer Yudkowsky, The Less Wrong Sequences