Concise Summary简洁概述
Yudkowsky frames rationality not as an abstract principle but as a set of twelve concrete virtues to practice: curiosity, relinquishment, lightness, evenness, argument, empiricism, simplicity, humility, perfectionism, precision, scholarship — and before all of them, a nameless twelfth that points beyond any description. Written in the spare, cadenced prose of a martial arts manual and drawing on Miyamoto Musashi's Book of Five Rings, the essay insists that naming 'the Way' is not the same as walking it. Each virtue addresses a specific failure mode of the aspiring rationalist. Together they form not a checklist but a living art whose ultimate standard is simply: does your map reflect the territory?
Yudkowsky 将理性阐释为十二种具体可践行的美德，而非抽象原则：好奇、放弃（错误信念）、轻盈、平正、论辩、经验主义、简洁、谦逊、完美主义、精确、博学——以及凌驾于一切之上的第十二种无名美德。全文仿武道手册的简洁节律写就，援引宫本武藏《五轮书》，坚持认为：说出「道」并不等于走在「道」上。每种美德都针对一种理性求道者的具体失误。合在一起，它们不是检查清单，而是一门活的艺术，其终极标准只有一个：你的地图是否映照了疆域？
Infographic信息图
Curiosity destroys itself
好奇心自我消灭
Genuine curiosity seeks an answer and thereby annihilates itself; those who perform open-mindedness while secretly not wanting to know are not curious at all.
真正的好奇心寻求答案，从而消灭自身；那些表演开放心态却暗地不愿求知的人，根本不算好奇。
Lightness: be a leaf in the wind
轻盈：做风中之叶
Let evidence blow you wherever it will. Fighting a rearguard retreat against the truth — grudgingly yielding ground only when forced — is the opposite of rationality.
让证据把你吹向任何方向。对真相打阵地防御战——只在被逼时才寸土寸金地让步——是理性的对立面。
Evenness: you are the judge, not a lawyer
平正：你是法官，不是律师
Apply the same standard of evidence to all propositions. If you place higher burdens of proof only on claims you dislike, your cleverness becomes a tool for self-defeat.
对所有命题施加同等的证据标准。如果你只对不喜欢的主张抬高证明门槛，你的聪明才智就变成了自我挫败的工具。
The nameless virtue: cut through to the answer
无名美德：直抵答案
Like Musashi's swordsman whose every parry and feint must end in a cut, every step of reasoning must carry through to the correct answer — not merely follow the rules of the art.
正如武藏笔下的剑士，每一次格挡与虚晃都必须落实在斩击上，推理的每一步都必须直抵正确答案——而不仅仅是遵守这门艺术的规则。
The void unifies all techniques
虚空统一所有技法
After years of practice under strict constraints you may glimpse the center, where all techniques are one technique and you move correctly without feeling constrained.
在严格约束下修炼多年后，你也许能一瞥那个中心——在那里，一切技法归为一种技法，你无需感到约束便能正确行动。
Detailed Summary详细概述
Form and Opening
Yudkowsky writes not in the discursive style of an essay but in the compressed, paratactic rhythm of a martial arts manual — short declarative sentences, second-person address, imperative mood. The twelve virtues are not argued for; they are proclaimed, and each proclamation unpacks a failure mode.
The Eleven Named Virtues
Curiosity — a burning itch, not a solemn vow. Curiosity "seeks to annihilate itself": it wants an answer and thereby ceases to need itself. Those who proclaim open-mindedness while secretly not wishing to know are merely performing.
Relinquishment — P. C. Hodgell: "That which can be destroyed by the truth should be." Do not flinch from experiences that threaten your beliefs. Evaluate beliefs first, then arrive at your emotions; do not let an emotion entrench a belief you have not yet checked.
Lightness — be a leaf in the wind of evidence, with no direction of your own. "Be faithless to your cause and betray it to a stronger enemy." Treating evidence as a constraint to escape is the same mistake as drawing a map with your eyes shut and adjusting lines to taste.
Evenness — the rationalist is a judge, not a lawyer. One who wants to believe asks "Does the evidence permit me?" One who wants to disbelieve asks "Does the evidence force me?" Detecting flaws only in arguments you oppose makes you stupider with every flaw you learn to spot. Intelligent argument in service of a predetermined conclusion is rationalization, not rationality.
Argument — engage rather than withdraw. Refusing to argue removes you from help. Honesty in argument serves you as much as others; distorting what you say to others also distorts your own thinking.
Empiricism — "The roots of knowledge are in observation and its fruit is prediction." Arguments that produce no difference in anticipated experience are verbal, not real. Jerry Cleaver: "What does you in is not failure to apply some high-level, intricate, complicated technique. It's overlooking the basics."
Simplicity — Saint-Exupéry: "Perfection is achieved not when there is nothing left to add, but when there is nothing left to take away." Every extra detail in a belief is another chance for it to be wrong. "The most reliable gear is the one that is designed out of the machine."
Humility — to be humble is to take specific actions in anticipation of your own errors; confessing fallibility without acting on it is boasting. Comparing yourself to others hides the biases all humans share. "The best physicist in ancient Greece could not calculate the path of a falling apple."
Perfectionism — correcting errors makes you notice more errors; tolerating an error prevents advancing to the next level where new errors become visible. Hold yourself to the highest standard you can imagine, then look for one still higher.
Precision — a prediction of "between 40 and 50" beats "between 1 and 100" even when both are correct, because it exposed itself to a stricter test. "The narrowest statements slice deepest." The dance step of Bayesian updating is precise and has no room for whim.
Scholarship — consume many sciences; let their gaps diminish and their knowledge unify. Especially: evolutionary psychology, heuristics and biases, probability theory, decision theory. But the Art must have a purpose beyond itself, or it collapses into infinite recursion.
The Nameless Virtue
Before all eleven stands "a virtue which is nameless." Yudkowsky quotes Musashi's Book of Five Rings: the swordsman's every parry, spring, and feint must end in a cut. So too, every step of reasoning must carry through to the correct answer in the same movement.
The danger of naming the virtue is naming it wrong. If you define rationality as "believing the Great Teacher," and the Great Teacher says the sky is green, you lose the chance to discover your mistake the moment you look up. Do not ask whether something is "the Way"; ask whether the sky is blue or green.
The Void
After years of practice and submission to strict constraints, you may glimpse the center. There, all techniques become one technique and you move correctly without feeling constrained — Musashi's "Way of the Void."
形式与开篇
Yudkowsky 并非以论文的说理文体写作，而是以武道手册的压缩、并列节律——短小的陈述句、第二人称、祈使语气。十二种美德不经论证，而是被宣示；每一次宣示都展开一种失误模式。
十一种具名美德
好奇——是灼烧般的痒，而非庄严的誓言。好奇心「寻求自我消灭」：它渴望答案，因而不再需要自身。那些宣称开放心态却暗地不愿求知的人，不过是在表演。
放弃——P. C. Hodgell：「能被真相摧毁的，就应当被摧毁。」 不要回避可能动摇你信念的经历。先评估信念，再生发情感；不要让一种情感为你尚未检验的信念筑起工事。
轻盈——做证据之风中的一片叶子，没有自己的方向。「对你的事业不忠，把它出卖给更强的敌人。」把证据当成约束来逃脱，和闭着眼睛坐在卧室里凭感觉画地图一样荒谬。
平正——理性者是法官，不是律师。想要相信的人问「证据是否允许我相信？」想要不信的人问「证据是否迫使我相信？」只在你反对的论证里寻找漏洞，会让你每学会识别一种漏洞，就愚蠢一分。为预设结论服务的聪明论证是合理化，不是理性。
论辩——参与而非退缩。拒绝论辩把你从帮助中排除出去。论辩中的诚实不只服务他人，也服务你自己；扭曲你对他人所说的话，同样扭曲你自己的思维。
经验主义——「知识的根在观察，其果实是预测。」不产生任何不同的预期经验的论证，是文字的，不是真实的。Jerry Cleaver：「搞垮你的不是没能运用某种高层、复杂、精妙的技术，而是忽略了基础。没有盯住球。」
简洁——圣埃克苏佩里：「完美不是在没有什么可以添加时实现的，而是在没有什么可以去掉时实现的。」 一个信念中每多一个细节，就多一次出错的机会。「最可靠的齿轮是从机器里被设计掉的那一个。」
谦逊——谦逊是为自己的错误采取具体行动预作准备；承认自己可能出错而无所行动，只是在炫耀谦虚。把自己与他人相比，会遮蔽所有人类共有的偏差。「古希腊最好的物理学家也算不出一个苹果落下的轨迹。」
完美主义——纠正错误让你注意到更多错误；容忍错误则阻止你进阶到下一层级，在那里新的错误才会变得可见。把自己对准你能想象到的最高标准，然后继续寻找更高的。
精确——「40 到 50 之间」的预测优于「1 到 100 之间」，即使两者都正确，因为前者把自己暴露于更严苛的检验。「最窄的陈述切得最深。」贝叶斯更新的舞步是精确的，没有任何空间容纳你的任性。
博学——吸纳众多科学，让它们之间的空隙缩小、知识趋于统一。尤其是：演化心理学、启发与偏差、概率论、决策理论。但这门艺术必须有超越自身的目的，否则它会陷入无穷递归而崩溃。
无名美德
在十一种之前，有「一种无名美德」。Yudkowsky 引用宫本武藏《五轮书》：剑士的每一次格挡、弹跳与虚晃，都必须落实于斩击。推理的每一步也同样，必须在同一动作中直抵正确答案。
将这种美德命名的危险在于命名出错。如果你把理性定义为「相信伟大老师的话」，而老师说天空是绿色的，那么当你抬头一看，就错过了发现自己错误的机会。不要问某件事是否符合「道」；问天空是蓝的还是绿的。
虚空
在严格约束下修炼多年后，你也许能一瞥那个中心。在那里，一切技法归为一种技法，你无需感到约束便能正确行动——武藏所说的「虚空之道」。
FAQ常见问答
Why write about virtues instead of rules or algorithms?为什么谈美德而不是规则或算法？
Yudkowsky's implicit answer is that rationality cannot be fully captured in explicit rules — you must embody the disposition, not just follow a checklist. A swordsman who only thinks "I must perform technique X" will fail to cut; a rationalist who only follows rules will fail to reach truth. Virtues are internalized dispositions that fire in the right circumstances without needing to consult a manual.
Yudkowsky 的隐含答案是：理性无法被完全化约为明文规则——你必须将其内化为习性，而非仅仅遵守检查清单。只想着「我要执行技法X」的剑士无法斩敌；只遵守规则的理性者无法抵达真相。美德是内化的倾向，在合适情境下自然触发，无需查阅手册。
What is the "nameless" twelfth virtue, exactly?第十二种「无名美德」究竟是什么？
Yudkowsky refuses to pin it down precisely — that's the point. It is the thing the eleven virtues all serve: the direct, movement-through-to-the-answer quality that Musashi describes in a swordsman. You can gesture at it with phrases like "the map that reflects the territory" or "Bayesian decision theory," but these descriptions are not the thing itself. If you mistake the name for the reality you will protect your description when you should be correcting it.
Yudkowsky 拒绝精确定义它——这正是重点所在。它是十一种美德所共同服务的那个东西：宫本武藏描述剑士时所说的那种「直抵目标的贯穿性」。你可以用「映照疆域的地图」或「贝叶斯决策理论」之类的词语去指向它，但这些描述并非事物本身。如果你把名称误认为现实，你就会在应当修正描述时去保护描述。
How do humility and perfectionism coexist?谦逊与完美主义如何共存？
They address different axes. Humility is about your calibration toward failure — taking concrete actions to catch and survive your mistakes, rather than boasting about fallibility. Perfectionism is about your aspiration — never settling for "almost right." The two together mean: hold yourself to the highest possible standard and build systems to catch yourself when you inevitably fall short of it.
它们针对不同的维度。谦逊关乎你对失败的校准——采取具体行动来捕捉和承受自己的错误，而非吹嘘自己的可错性。完美主义关乎你的志向——永不满足于「差不多对」。两者合在一起意味着：为自己设定最高可能的标准，同时建立机制，在你不可避免地不达标时发现自己。
What does Yudkowsky mean by "relinquishment"?Yudkowsky 所说的「放弃」是什么意思？
Relinquishment is the willingness to give up beliefs — and crucially, to give up the emotions that rest on those beliefs — when evidence demands it. The key example is the iron that might be hot or cool: the Way opposes both unjustified fear and unjustified calm. You should not retain the emotion after the belief that warranted it is gone. This is harder than it sounds: beliefs and emotions form a mutually reinforcing tangle that must be loosened at both ends.
「放弃」是当证据要求时，愿意放弃信念——关键是，也愿意放弃依附于那些信念的情感。核心例子是可能是热的或凉的铁：「道」反对无根据的恐惧，也反对无根据的镇定。当支撑某种情感的信念消失后，你不应保留那种情感。这比听起来更难：信念与情感相互强化地纠缠在一起，必须从两端同时松开。
Is this essay meant as a complete guide to rationality?这篇文章是理性的完整指南吗？
No, and the essay itself says so obliquely. Scholarship is the eleventh virtue because "the Art must have a purpose other than itself, or it collapses into infinite recursion" — rationality is a tool for something, not a self-contained end. The nameless virtue points beyond all the named ones, and the text closes by warning that years of practice are required before any of this begins to cohere into "the void."
不是，文章本身也隐晦地这么说了。博学被列为第十一种美德，因为「这门艺术必须有超越自身的目的，否则它会陷入无穷递归」——理性是服务于某个目的的工具，而非自足的终点。无名美德指向一切具名美德之外，文章以警告作结：需要多年修炼，这一切才会开始凝聚成「虚空」。
Why invoke Musashi's Book of Five Rings in an essay about rationality?为什么在一篇关于理性的文章里引用宫本武藏的《五轮书》？
Because Musashi articulates the same distinction Yudkowsky is after: there is a difference between knowing the techniques of a discipline and having the art. The swordsman who thinks "parry… feint… strike" will not cut. The rationalist who thinks "check for biases… update on evidence… apply Bayes" may still miss the truth if each step is not genuinely aimed at the correct answer. The martial arts framing also underscores that rationality is a practice, not a set of propositional beliefs.
因为武藏阐明了Yudkowsky所追寻的同一个区分：知道一门学科的技法与拥有这门艺术之间存在差距。心里想着「格挡……虚晃……出击」的剑士无法斩敌。心里想着「检查偏差……依证更新……运用贝叶斯」的理性者，如果每一步都不是真正指向正确答案，仍可能与真相擦肩而过。武道框架还强调了理性是一种修炼，而非一套命题性信念。
In-depth Analysis · Pros & Cons深入解读 · 优缺点
"Twelve Virtues of Rationality" is among the most widely circulated short pieces in the rationalist canon, notable for its departure from Yudkowsky's usual analytical prose into something closer to sacred text. It functions less as an argument than as a manifesto — a mnemonic portrait of the ideal epistemic agent.
《理性的十二种美德》是理性主义经典中流传最广的短篇之一，它有别于Yudkowsky惯常的分析性散文，更接近一种神圣文本。它的作用与其说是论证，不如说是宣言——一幅理想认知主体的记忆画像。
- Memorable through form形式赋予记忆力The martial-arts manual style is doing real cognitive work: short, cadenced sentences are far more memorable than propositional lists, which means the virtues are more likely to be recalled at the moment they are needed.武道手册的文体承担着真实的认知功能：短小、有节律的句子远比命题清单更易记忆，这意味着这些美德更可能在最需要它们的时刻被想起。
- Covers the full failure space覆盖完整的失误空间Each virtue addresses a distinct and real pathology: curiosity for the complacent knower, evenness for the motivated skeptic, humility for the Dunning-Kruger sufferer, precision for the vague Bayesian. Together they triangulate something close to a complete map of epistemic vice.每种美德针对一种真实而独特的病症：好奇心针对自满的「已知者」，平正针对动机性怀疑者，谦逊针对Dunning-Kruger效应受害者，精确针对模糊的贝叶斯者。合在一起，它们三角定位出接近完整的认知恶习地图。
- Self-applying caution自我适用的警示The essay explicitly warns against treating its own description of rationality as the final word — a rare piece of intellectual honesty that models the very lightness and relinquishment it preaches.文章明确警告不要把它自己对理性的描述当作定论——这是一种罕见的智识诚实，以身示范了它所宣扬的轻盈与放弃。
- The nameless virtue solves a real problem无名美德解决了一个真实问题By placing the un-nameable at the center, Yudkowsky guards against the predictable failure mode of any virtue list: mistaking compliance with the list for actual rationality. The void is a built-in self-subversion.通过将不可名状者置于中心，Yudkowsky防范了任何美德清单可预见的失误：把遵守清单误认为真正的理性。虚空是一种内置的自我颠覆。
- Aphorism without argument无论证的警句The essay proclaims rather than argues. A reader who is not already disposed to accept the virtues gets no tools for evaluating them. Why should lightness be a virtue rather than a liability (e.g., a scientist who drifts toward the latest finding)? The rhetorical compression that makes the piece memorable also prevents it from addressing serious objections.文章是宣示而非论证。不倾向于接受这些美德的读者，得不到任何评估工具。为什么轻盈是一种美德而非负债（例如，一个随着最新发现飘移的科学家）？让文章令人印象深刻的修辞压缩，同时也阻止了它回应严肃的反驳。
- Tension between humility and perfectionism is unresolved谦逊与完美主义之间的张力未获解决The essay places humility ("take specific actions in anticipation of your own errors") alongside perfectionism ("hold yourself to the highest standard you can imagine") without addressing when they pull in opposite directions — e.g., should a scientist release imperfect findings or wait? In practice, the two virtues regularly conflict, and the text offers no adjudication.文章将谦逊（「为自己的错误采取具体的预防行动」）与完美主义（「将自己对准你能想象到的最高标准」）并列，却未说明当二者相互拉扯时该如何应对——例如，科学家是该发布不完善的发现还是等待？在实践中，这两种美德经常冲突，而文章没有给出裁决方式。
- The martial-arts analogy obscures epistemic costs武道类比遮蔽了认知代价Musashi's context is combat, where the goal (defeating the enemy) is clear and singular. Rationality in real life involves navigating multiple, often incommensurable goals and values. The metaphor implies a clarity of aim that most epistemic situations do not have, and it may subtly encourage a combative orientation — treating every inquiry as a contest to be won.武藏的语境是战斗，目标（击败敌人）明确而单一。现实中的理性涉及在多个、通常不可公度的目标与价值间导航。这个隐喻暗含了大多数认知情境所不具备的目标清晰性，而且可能微妙地鼓励一种对抗性取向——将每次探究都视为要赢得的对决。
- "Scholarship" underspecified「博学」规定不足The instruction to "swallow enough sciences" so the gaps diminish is vague about which fields to prioritize and when breadth crowds out depth. The caveat that the Art needs a purpose beyond itself points at a real problem but does not solve it: what purpose, and how does one avoid the trap of scholarship for its own sake?「吸纳足够多的科学」以使空隙消失的指令，对于应优先哪些领域、广度何时挤压深度，语焉不详。「艺术需要超越自身的目的」这一警告指向了一个真实问题，却未解决它：什么样的目的？如何避免为博学而博学的陷阱？
A beautifully constructed manifesto that succeeds as an initiation rite — it seeds the right orientations in a new reader and remains quotable across decades. Its weakness is the obverse of its strength: the aphoristic compression that makes it memorable also makes it immunize itself from scrutiny. Read alongside the fuller analytical essays in the Sequences, not as a standalone curriculum.
一篇构建精美的宣言，作为入门礼极为成功——它在新读者心中播下正确的取向，并在数十年间始终值得引用。它的弱点与它的强点互为表里：让它令人难忘的警句压缩，同时也让它将自己免疫于审视之外。应与序列文章中更完整的分析性文章配合阅读，而非作为独立的课程。
Original Text原文
The first virtue is curiosity. A burning itch to know is higher than a solemn vow to pursue truth. To feel the burning itch of curiosity requires both that you be ignorant, and that you desire to relinquish your ignorance. If in your heart you believe you already know, or if in your heart you do not wish to know, then your questioning will be purposeless and your skills without direction. Curiosity seeks to annihilate itself; there is no curiosity that does not want an answer. The glory of glorious mystery is to be solved, after which it ceases to be mystery. Be wary of those who speak of being open-minded and modestly confess their ignorance. There is a time to confess your ignorance and a time to relinquish your ignorance.
The second virtue is relinquishment. P. C. Hodgell said: “That which can be destroyed by the truth should be.”\[1\] Do not flinch from experiences that might destroy your beliefs. The thought you cannot think controls you more than thoughts you speak aloud. Submit yourself to ordeals and test yourself in fire. Relinquish the emotion which rests upon a mistaken belief, and seek to feel fully that emotion which fits the facts. If the iron approaches your face, and you believe it is hot, and it is cool, the Way opposes your fear. If the iron approaches your face, and you believe it is cool, and it is hot, the Way opposes your calm. Evaluate your beliefs first and then arrive at your emotions. Let yourself say: “If the iron is hot, I desire to believe it is hot, and if it is cool, I desire to believe it is cool.” Beware lest you become attached to beliefs you may not want.
The third virtue is lightness. Let the winds of evidence blow you about as though you are a leaf, with no direction of your own. Beware lest you fight a rearguard retreat against the evidence, grudgingly conceding each foot of ground only when forced, feeling cheated. Surrender to the truth as quickly as you can. Do this the instant you realize what you are resisting, the instant you can see from which quarter the winds of evidence are blowing against you. Be faithless to your cause and betray it to a stronger enemy. If you regard evidence as a constraint and seek to free yourself, you sell yourself into the chains of your whims. For you cannot make a true map of a city by sitting in your bedroom with your eyes shut and drawing lines upon paper according to impulse. You must walk through the city and draw lines on paper that correspond to what you see. If, seeing the city unclearly, you think that you can shift a line just a little to the right, just a little to the left, according to your caprice, this is just the same mistake.
The fourth virtue is evenness. One who wishes to believe says, “Does the evidence permit me to believe?” One who wishes to disbelieve asks, “Does the evidence force me to believe?” Beware lest you place huge burdens of proof only on propositions you dislike, and then defend yourself by saying: “But it is good to be skeptical.” If you attend only to favorable evidence, picking and choosing from your gathered data, then the more data you gather, the less you know. If you are selective about which arguments you inspect for flaws, or how hard you inspect for flaws, then every flaw you learn how to detect makes you that much stupider. If you first write at the bottom of a sheet of paper “And therefore, the sky is green!” it does not matter what arguments you write above it afterward; the conclusion is already written, and it is already correct or already wrong. To be clever in argument is not rationality but rationalization. Intelligence, to be useful, must be used for something other than defeating itself. Listen to hypotheses as they plead their cases before you, but remember that you are not a hypothesis; you are the judge. Therefore do not seek to argue for one side or another, for if you knew your destination, you would already be there.
The fifth virtue is argument. Those who wish to fail must first prevent their friends from helping them. Those who smile wisely and say “I will not argue” remove themselves from help and withdraw from the communal effort. In argument strive for exact honesty, for the sake of others and also yourself: the part of yourself that distorts what you say to others also distorts your own thoughts. Do not believe you do others a favor if you accept their arguments; the favor is to you. Do not think that fairness to all sides means balancing yourself evenly between positions; truth is not handed out in equal portions before the start of a debate. You cannot move forward on factual questions by fighting with fists or insults. Seek a test that lets reality judge between you.
The sixth virtue is empiricism. The roots of knowledge are in observation and its fruit is prediction. What tree grows without roots? What tree nourishes us without fruit? If a tree falls in a forest and no one hears it, does it make a sound? One says, “Yes it does, for it makes vibrations in the air.” Another says, “No it does not, for there is no auditory processing in any brain.” Though they argue, one saying “Yes,” and one saying “No,” the two do not anticipate any different experience of the forest. Do not ask which beliefs to profess, but which experiences to anticipate. Always know which difference of experience you argue about. Do not let the argument wander and become about something else, such as someone’s virtue as a rationalist. Jerry Cleaver said: “What does you in is not failure to apply some high-level, intricate, complicated technique. It’s overlooking the basics. Not keeping your eye on the ball.”\[2\] Do not be blinded by words. When words are subtracted, anticipation remains.
The seventh virtue is simplicity. Antoine de Saint-Exupéry said: “Perfection is achieved not when there is nothing left to add, but when there is nothing left to take away.”\[3\] Simplicity is virtuous in belief, design, planning, and justification. When you profess a huge belief with many details, each additional detail is another chance for the belief to be wrong. Each specification adds to your burden; if you can lighten your burden you must do so. There is no straw that lacks the power to break your back. Of artifacts it is said: The most reliable gear is the one that is designed out of the machine. Of plans: A tangled web breaks. A chain of a thousand links will arrive at a correct conclusion if every step is correct, but if one step is wrong it may carry you anywhere. In mathematics a mountain of good deeds cannot atone for a single sin. Therefore, be careful on every step.
The eighth virtue is humility. To be humble is to take specific actions in anticipation of your own errors. To confess your fallibility and then do nothing about it is not humble; it is boasting of your modesty. Who are most humble? Those who most skillfully prepare for the deepest and most catastrophic errors in their own beliefs and plans. Because this world contains many whose grasp of rationality is abysmal, beginning students of rationality win arguments and acquire an exaggerated view of their own abilities. But it is useless to be superior: Life is not graded on a curve. The best physicist in ancient Greece could not calculate the path of a falling apple. There is no guarantee that adequacy is possible given your hardest effort; therefore spare no thought for whether others are doing worse. If you compare yourself to others you will not see the biases that all humans share. To be human is to make ten thousand errors. No one in this world achieves perfection.
The ninth virtue is perfectionism. The more errors you correct in yourself, the more you notice. As your mind becomes more silent, you hear more noise. When you notice an error in yourself, this signals your readiness to seek advancement to the next level. If you tolerate the error rather than correcting it, you will not advance to the next level and you will not gain the skill to notice new errors. In every art, if you do not seek perfection you will halt before taking your first steps. If perfection is impossible that is no excuse for not trying. Hold yourself to the highest standard you can imagine, and look for one still higher. Do not be content with the answer that is almost right; seek one that is exactly right.
The tenth virtue is precision. One comes and says: The quantity is between 1 and 100. Another says: The quantity is between 40 and 50. If the quantity is 42 they are both correct, but the second prediction was more useful and exposed itself to a stricter test. What is true of one apple may not be true of another apple; thus more can be said about a single apple than about all the apples in the world. The narrowest statements slice deepest, the cutting edge of the blade. As with the map, so too with the art of mapmaking: The Way is a precise Art. Do not walk to the truth, but dance. On each and every step of that dance your foot comes down in exactly the right spot. Each piece of evidence shifts your beliefs by exactly the right amount, neither more nor less. What is exactly the right amount? To calculate this you must study probability theory. Even if you cannot do the math, knowing that the math exists tells you that the dance step is precise and has no room in it for your whims.
The eleventh virtue is scholarship. Study many sciences and absorb their power as your own. Each field that you consume makes you larger. If you swallow enough sciences the gaps between them will diminish and your knowledge will become a unified whole. If you are gluttonous you will become vaster than mountains. It is especially important to eat math and science which impinge upon rationality: evolutionary psychology, heuristics and biases, social psychology, probability theory, decision theory. But these cannot be the only fields you study. The Art must have a purpose other than itself, or it collapses into infinite recursion.
Before these eleven virtues is a virtue which is nameless.
Miyamoto Musashi wrote, in The Book of Five Rings:\[4\]
The primary thing when you take a sword in your hands is your intention to cut the enemy, whatever the means. Whenever you parry, hit, spring, strike or touch the enemy’s cutting sword, you must cut the enemy in the same movement. It is essential to attain this. If you think only of hitting, springing, striking or touching the enemy, you will not be able actually to cut him. More than anything, you must be thinking of carrying your movement through to cutting him.
Every step of your reasoning must cut through to the correct answer in the same movement. More than anything, you must think of carrying your map through to reflecting the territory.
If you fail to achieve a correct answer, it is futile to protest that you acted with propriety.
How can you improve your conception of rationality? Not by saying to yourself, “It is my duty to be rational.” By this you only enshrine your mistaken conception. Perhaps your conception of rationality is that it is rational to believe the words of the Great Teacher, and the Great Teacher says, “The sky is green,” and you look up at the sky and see blue. If you think, “It may look like the sky is blue, but rationality is to believe the words of the Great Teacher,” you lose a chance to discover your mistake.
Do not ask whether it is “the Way” to do this or that. Ask whether the sky is blue or green. If you speak overmuch of the Way you will not attain it. You may try to name the highest principle with names such as “the map that reflects the territory” or “experience of success and failure” or “Bayesian decision theory.” But perhaps you describe incorrectly the nameless virtue. How will you discover your mistake? Not by comparing your description to itself, but by comparing it to that which you did not name.
If for many years you practice the techniques and submit yourself to strict constraints, it may be that you will glimpse the center. Then you will see how all techniques are one technique, and you will move correctly without feeling constrained. Musashi wrote: “When you appreciate the power of nature, knowing the rhythm of any situation, you will be able to hit the enemy naturally and strike naturally. All this is the Way of the Void.”
These then are twelve virtues of rationality:
Curiosity, relinquishment, lightness, evenness, argument, empiricism, simplicity, humility, perfectionism, precision, scholarship, and the void.
1\. Patricia C. Hodgell, Seeker’s Mask (Meisha Merlin Publishing, Inc., 2001).
2\. Cleaver, Immediate Fiction: A Complete Writing Course.
3\. Antoine de Saint-Exupéry, Terre des Hommes (Paris: Gallimard, 1939).
4\. Musashi, Book of Five Rings.
The first publication of this post is here.
第一种美德是好奇。灼烧般渴望知晓，高于庄严的探求真理之誓。感受到好奇的灼烧之痒，需要你既处于无知之中，又渴望放弃这无知。如果你在心底相信自己已然知晓，或者在心底不愿意求知，那么你的追问将毫无目的，你的技艺将失去方向。好奇心寻求自我消灭；没有哪种好奇心不想要一个答案。辉煌谜题的荣耀在于被解开，之后它便不再是谜题。对那些谈论心胸开阔、谦虚认错的人要保持警惕。有时候应当承认无知，有时候应当放弃无知。
第二种美德是放弃。P. C. Hodgell 说：「能被真相摧毁的，就应当被摧毁。」\[1\] 不要回避那些可能摧毁你信念的经历。你无法去想的念头，比你大声说出的念头更能控制你。让自己接受磨砺，在烈火中检验自己。放弃那依附于错误信念的情感，努力完整地感受那真正符合事实的情感。如果铁块向你的脸逼近，你相信它是热的，而它其实是凉的，「道」反对你的恐惧。如果铁块向你的脸逼近，你相信它是凉的，而它其实是热的，「道」反对你的镇定。先评估信念，再生发情感。让自己说：「如果铁块是热的，我愿意相信它是热的；如果它是凉的，我愿意相信它是凉的。」当心不要对你也许并不真正想要的信念产生依附。
第三种美德是轻盈。让证据之风把你随意吹动，如同一片叶子，没有自己的方向。当心，不要对证据打阵地防御战，只在被逼时才寸土寸金地让步，感到愤愤不平。尽可能快地向真相投降。在你意识到自己正在抵抗的那一刻，在你能看出证据之风从哪个方向向你吹来的那一刻，就这样做。对你的事业不忠，把它出卖给更强的敌人。如果你把证据视为约束并寻求摆脱，你就把自己卖入了自己任性的枷锁。因为你无法靠坐在卧室里闭着眼睛按照冲动在纸上画线，来绘制一座城市的真实地图。你必须走过这座城市，在纸上画出与你所见相符的线条。如果你看到的城市模糊不清，你以为可以按自己的任性把某条线稍微挪向右边或左边，这是同样的错误。
第四种美德是平正。一个想要相信的人说：「证据允许我相信吗？」一个想要不信的人问：「证据强迫我相信吗？」当心，不要只对你不喜欢的命题施加沉重的举证责任，然后以「保持怀疑是好事」来为自己辩护。如果你只关注有利的证据，从收集到的数据中挑挑拣拣，那么你收集的数据越多，你知道的就越少。如果你选择性地审查哪些论证的漏洞，或者审查得有多仔细，那么你每学会识别一种漏洞，就会变得更愚蠢一分。如果你先在一张纸的底部写下「因此，天空是绿色的！」，那么之后你在上面写什么论证都无所谓；结论已经写在那里，它要么已经正确，要么已经错误。善于论辩并非理性，而是合理化。智识若要有用，就必须用于其他目的，而非打败它自身。倾听各种假说在你面前陈情，但记住，你不是一个假说；你是法官。因此不要去为某一方或另一方辩护，因为如果你已知道目的地，你就已经到达了。
第五种美德是论辩。那些想要失败的人，必先阻止朋友帮助他们。那些睿智地微笑着说「我不会争论」的人，把自己从帮助中排除出去，退出了共同的努力。在论辩中追求精确的诚实，为了他人，也为了你自己：扭曲你对他人所说的那部分自我，也扭曲了你自己的思维。不要以为接受对方论证是给了他人恩惠；恩惠是给了你自己。不要认为对各方公平意味着把自己在各立场之间均衡地居中；真相不会在辩论开始之前被均分给各方。你无法通过拳脚相加或侮辱他人来推进事实性问题。寻求一种检验，让现实来裁判你们之间的争论。
第六种美德是经验主义。知识的根在观察，其果实是预测。没有根的树如何生长？没有果实的树如何滋养我们？如果一棵树在森林里倒下而无人听见，它发出声音了吗？一个人说：「发出了，因为它在空气中制造了振动。」另一个人说：「没有发出，因为没有任何大脑在进行听觉处理。」尽管他们争论，一个说「有」，一个说「没有」，但两人对于这片森林并不预期任何不同的经验。不要问该信奉哪些信念，而要问该预期哪些经验。始终清楚你们所争论的是哪种经验上的差异。不要让论辩漂移，变成关于别的东西，比如某人作为理性者的德行。Jerry Cleaver 说：「搞垮你的不是没能运用某种高层、复杂、精妙的技术，而是忽略了基础。没有盯住球。」\[2\] 不要被文字蒙蔽。当文字被减去，预期便留了下来。
第七种美德是简洁。Antoine de Saint-Exupéry 说：「完美不是在没有什么可以添加时实现的，而是在没有什么可以去掉时实现的。」\[3\] 简洁在信念、设计、计划和论证中都是美德。当你持有一个带有众多细节的庞大信念时，每增加一个细节，就多一次信念出错的机会。每一项规定都增加你的负担；如果你能减轻负担，你就必须这样做。没有哪根稻草没有能力压断你的背。关于人工制品，有句话说：最可靠的齿轮是从机器里被设计掉的那一个。关于计划：缠绕成团的蛛网会断裂。一条千环之链，如果每一步都正确，就会抵达正确的结论；但如果一步出错，它可能把你带向任何地方。在数学中，一座好行为的高山无法弥补一桩罪过。因此，在每一步都要小心。
第八种美德是谦逊。谦逊是为预期自己的错误而采取具体行动。承认自己的可错性却无所行动，不是谦逊，而是在炫耀自己的谦虚。谁最谦逊？那些最善于为自己信念与计划中最深刻、最灾难性的错误做好准备的人。因为这个世界上有许多人对理性的把握糟糕透顶，理性的初学者会赢得论辩，并对自己的能力产生夸大的看法。但高人一等是没用的：生活不是曲线评分制。古希腊最好的物理学家也算不出一个苹果落下的轨迹。没有任何保证说，凭你最大的努力就足够了；因此不要去想别人是否做得更差。如果你把自己与他人相比，你就看不见所有人类共有的偏差。身为人类就是犯一万个错误。这个世界上没有人能达到完美。
第九种美德是完美主义。你在自己身上纠正的错误越多，你注意到的就越多。当你的心智变得更寂静，你听到的噪音就越多。当你注意到自己身上的一个错误，这标志着你准备好寻求晋升到下一个层级。如果你容忍那个错误而不去纠正它，你就不会晋升到下一个层级，也不会获得注意新错误的技能。在每一门艺术中，如果你不寻求完美，你就会在迈出第一步之前便停下来。即使完美不可能实现，这也不是不去尝试的借口。把自己对准你能想象到的最高标准，然后继续寻找更高的。不要满足于差不多正确的答案；寻求完全正确的。
第十种美德是精确。一个人说：这个量介于 1 到 100 之间。另一个人说：这个量介于 40 到 50 之间。如果这个量是 42，两人都是正确的，但第二个预测更有用，且把自己暴露于更严格的检验。一个苹果的真实情况未必适用于另一个苹果；因此关于一个单独苹果所能说的，多于关于世界上所有苹果所能说的。最窄的陈述切得最深，那是刀刃的利口。就像地图一样，绘图艺术也是如此：「道」是一门精确的艺术。不要走向真相，而要舞向它。在那支舞的每一步，你的脚都落在恰好正确的地方。每一块证据把你的信念移动恰好正确的量，不多也不少。什么是恰好正确的量？要计算这个，你必须研究概率论。即使你不能做那道数学，知道那道数学存在这一事实，就告诉你这个舞步是精确的，其中没有任何空间容纳你的任性。
第十一种美德是博学。研习众多科学，将其力量吸纳为你自己的。你吸纳的每一个领域都使你更宏大。如果你吞下足够多的科学，它们之间的空隙将会缩小，你的知识将成为一个统一的整体。如果你贪婪，你将变得比山岳更广阔。尤其重要的是吸纳那些切近理性的数学与科学：演化心理学、启发法与偏差、社会心理学、概率论、决策理论。但这些不能是你所研习的唯一领域。这门艺术必须有超越自身的目的，否则它会陷入无穷递归而崩溃。
在这十一种美德之前，有一种无名的美德。
宫本武藏在《五轮书》中写道：\[4\]
当你持剑在手，首要之事是斩敌的意志，无论以何种方式。无论何时你格挡、击中、弹跳、攻击或触碰敌人的斩击之剑，你都必须在同一动作中斩敌。获得这一点至关重要。如果你只想着击中、弹跳、攻击或触碰敌人，你实际上将无法斩敌。最重要的是，你必须想着将你的动作贯穿到斩敌这一点。
你推理的每一步都必须在同一动作中直抵正确答案。最重要的是，你必须想着将你的地图贯穿到映照疆域这一点。
如果你未能达到正确答案，抗议自己行事得当是徒劳的。
你如何能改进自己对理性的理解？不是通过对自己说「我有责任去理性」。如此你只会奉祀你错误的理解。也许你对理性的理解是：相信伟大老师的话是理性的，而伟大老师说「天空是绿色的」，你抬头看天却看到蓝色。如果你想「天空看起来也许是蓝色的，但理性是相信伟大老师的话」，你就错过了一个发现自己错误的机会。
不要问这样做或那样做是否合乎「道」。问天空是蓝的还是绿的。如果你过多谈论「道」，你就不会获得它。你可以尝试用诸如「映照疆域的地图」或「成功与失败的经验」或「贝叶斯决策理论」这样的名称来命名最高原则。但也许你对这种无名美德描述有误。你将如何发现自己的错误？不是通过将你的描述与自身对比，而是通过将它与你未曾命名的那个东西对比。
如果你多年修炼这些技法并服从于严格的约束，也许你将得以一瞥那个中心。那时你将看见一切技法如何归为一种技法，你将能不感到约束地正确行动。武藏写道：「当你领会自然的力量，了解任何情境的节律，你将能够自然地击中敌人，自然地攻击。这一切都是虚空之道。」
以下便是理性的十二种美德：
好奇、放弃、轻盈、平正、论辩、经验主义、简洁、谦逊、完美主义、精确、博学，以及虚空。
1\. Patricia C. Hodgell，《寻觅者的面具》（Meisha Merlin Publishing, Inc.，2001年）。
2\. Cleaver，《即时小说：完整写作课程》。
3\. Antoine de Saint-Exupéry，《南方邮件》（巴黎：Gallimard，1939年）。
4\. 武藏，《五轮书》。
本文最初发表于此处。