這個概念在說什麼
**The setup in the *Laṅkāvatāra*.** In the *Laṅkāvatāra Sūtra* (《楞伽阿跋多羅寶經》, Taishō T670), the Buddha tells the bodhisattva Mahāmati (大慧) that there are "two penetrations" (二種通相, also 二種法通) running through the entire path — for śrāvakas, pratyekabuddhas, bodhisattvas, and for every tathāgata past, present, and future. They are:
1. 宗通 (Siddhānta-prativedha) — "penetration of the principle": the direct, non-verbal realization of the self-awakened ground, far from conceptual elaboration, moving toward the undefiled realm. 2. 說通 (Deśanā-prativedha) — "penetration of teaching": the skillful, articulate explanation of the Dharma that fits each sentient being's capacity and leads them toward liberation.
The sūtra fixes the division in a single verse that anyone who wants to teach should be able to recite: 「謂我二種通，宗通及言說，說者授童蒙，宗為修行者。」 "Of my two penetrations, principle and discourse — discourse instructs the beginner, principle is for the practitioner."
This is not a ranking. It is a division of labor. 宗通 is what the realized being *is*; 說通 is what happens when that being turns toward others. Without 宗通, 說通 is fluent talk with nothing behind it. Without 說通, 宗通 is a private attainment no one else can benefit from. The bodhisattva is asked to master both.
The classical definition, in full. The *Laṅkāvatāra* defines 說通 twice, once broadly and once concisely, and both are needed:
- Broad formulation: 「說九部種種教法，離異不異、有無等相，以巧方便，隨順眾生如應說法，令得度脫。」 "One expounds the nine categories of teaching in their variety, free from the marks of identity and difference, existence and non-existence; with skillful means, one teaches each being as they are able to receive, so that they cross over to liberation." - Concise formulation: 「隨眾生心之所應，為說種種眾具契經。是名說通。」 "According to what suits the minds of sentient beings, one explains the many kinds of sūtras. This is called 說通."
The short version looks deceptively simple — "just say what fits." The long version adds the hard part: a *full repertoire*, *freedom from conceptual fixation*, *skillful means*, and an explicit *goal of liberation* (度脫). Each addition prevents 說通 from collapsing into one of its common counterfeit forms.
A five-part anatomy of 說通. Read closely, the broad formulation is doing five things at once. To keep them straight:
1. 九部教法 (the nine categories of teaching). 說通 draws on the full repertoire of scriptural genres, not just exposition. The classical nine are: 修多羅 (*sūtra*, prose discourses), 祇夜 (*geya*, mixed verse-and-prose restatements), 和伽羅那 (*vyākaraṇa*, prophecies of future Buddhahood), 伽陀 (*gāthā*, independent verses), 優陀那 (*udāna*, "self-uttered" inspired sayings), 尼陀那 (*nidāna*, accounts of causes and conditions), 阿波陀那 (*avadāna*, tales of heroic deeds), 伊帝曰多伽 (*itivṛttaka*, "thus-it-was-said" accounts), 闍多伽 (*jātaka*, birth-stories). Some canons add 毘佛略 (*vaipulya*, extended exposition) and others to form the 十二部. The point is that the repertoire is wide *because sentient beings are various* — a grieving person may need a jātaka, a philosopher a vyākaraṇa, a child a parable, a contemplative a *udāna*. Limiting oneself to a single genre is already a failure of 說通.
2. 離異不異、有無等相 (freedom from the marks of identity/difference, existence/non-existence). 說通 is not "any explanation that lands." The *speaker's mind* must itself be free from one-sided conceptual fixation while speaking. A teacher who, while lecturing on emptiness, secretly holds "my view is the right view, theirs is wrong" is not doing 說通; they are doing its mirror image. This criterion is what disqualifies much of what circulates as "Dharma content" today — fluent, accurate, and secretly polemical.
3. **善巧方便 (*upāya-kauśalya*, skillful means).** This is the larger Mahāyāna principle, famously elaborated in the Lotus Sūtra's *Upāya* chapter (《法華經·方便品》): the Dharma is one, its expressions are many, and the bodhisattva picks the form that fits the listener. What 說通 adds is that this adaptation is itself *liberating*, not merely rhetorical. Skillful means here is closer to a doctor's dosing than to a salesperson's pitch.
4. 隨順眾生如應說法 / 隨眾生心之所應 (responding to what each being is actually able to receive). The orientation is toward the listener, not the speaker's preferences, not the tradition's prestige, not the moment's fashion — the listener's actual capacity and need, *as it is now*.
5. 令得度脫 (bringing the listener across to liberation). The non-negotiable purpose. If the explanation does not move the listener, even by one degree, toward release from bondage, it is not 說通, however moving or correct it sounds. This is what separates 說通 from academic philosophy, partisan rhetoric, aesthetic performance, or even good psychotherapy that has lost its telos.
The contrast with 宗通, by design. The *Laṅkāvatāra* uses 宗通 as a foil to throw 說通 into relief. 宗通 is described as 「緣自得勝進相，遠離言說文字妄想，趣無漏界自覺地自相，遠離一切虛妄覺想，降伏一切外道眾魔，緣自覺趣光明暉發」 — based on one's own attainment, far from verbal and conceptual elaboration, moving toward the undefiled realm, transcending all delusive perception, subduing heterodox paths. It 「超度一切心、意、意識」 — surpasses mind, mentation, and consciousness themselves; it is 「離因成見相」 — free from views of cause-and-effect fabrication; it is 「自覺聖境界」 — the self-awakened holy realm.
Read the two side by side and a strange thing appears: 宗通 is described almost entirely in negative terms (far from, surpassing, free from), while 說通 is described almost entirely in positive, active terms (expounds, adapts, instructs, liberates). One is the realized ground that has no need of language; the other is the activity that takes shape precisely *as* language. The bodhisattva needs both hands.
A warning the sūtra itself raises. The text is emphatic that ignorant beings get tangled in 說通 in exactly the way one might expect: they 「執著方便之說」 — *cling to the expedient teaching itself*, mistaking the finger for the moon. They 「於自宗四句清淨通相不善分別」 — fail to discriminate the four-cornered clean penetration (the *catuṣkoṭi*: being, non-being, both, neither) that 宗通 involves. The bodhisattva is exhorted to master *both* so that "future ordinary beings, śrāvakas, and pratyekabuddhas" are not led astray by the very teaching meant to free them. This warning is not peripheral; it is one of the reasons the sūtra spends so much energy on the pair.
生活裡的走查 (A Walk-Through in Contemporary Life)
說通 looks abstract until you start to map it onto what you actually do whenever you try to *help someone understand something*. Let's walk it slowly through situations most readers will recognize.
Scene 1 — A friend whose parent has just died. They say: "I should have called more. I wasted so much time."
The first thing to notice is what *not* to do. The textbook Buddhist reply — "everything is impermanent; attachment is the source of suffering" — would be a precise technical description of their condition delivered with essentially zero 說通. It is accurate; it is irrelevant; it may even be a small violence. Why? Because it ignores element 4 (*隨順* — the listener's actual capacity in this moment is to be heard, not lectured) and because it violates element 2 (*離相*) in the speaker, who is secretly holding "I see the truth and you don't," which is precisely the conceptual fixation 說通 is supposed to be free of.
A 說通 response might be: silence at first; then a single sentence that opens rather than closes ("That sounds really painful"); later, maybe a story — a *jātaka*-style reminiscence of their parent told back to them so they can feel their parent's life had meaning; weeks later, when the ground can finally receive it, a brief teaching on impermanence that lands like rain, not like a hammer. The repertoire (九部) was used *as the situation changed*. Skillful means (方便) meant *changing genre* as the friend changed. The purpose (度脫) was not to win a theological point but to help them move, however slightly, through grief.
Scene 2 — A junior colleague keeps making the same mistake at work. The temptation is to explain the principle clearly, once, and assume comprehension. That is 宗通 being mistaken for teaching — *your* direct grasp of the situation, paraded in front of another person as if it would automatically be theirs.
The classical failure here is what the sūtra calls 「執著方便之說」 — the manager who has *one* preferred script ("here's how I would have done it") and forces it on everyone. A technique that worked for them has been hardened into a universal law. A 說通 approach asks: what is this particular person's mental model? Are they missing a piece of vocabulary? Emotionally blocked? Misreading the social context? Each diagnosis calls for a different genre — sometimes a parable (*avadāna*), sometimes a prophecy of their future competence (*vyākaraṇa*), sometimes just a question that lets them see for themselves (*udāna*-like). And element 2 still applies: hold no fixed view of where they "should" be.
Scene 3 — A child afraid of the dark. You do not deliver a Madhyamaka analysis of dependent origination. You turn on a small lamp; you tell a story; you sit beside them. This is 說通 in miniature. The sūtra's nine genres were, historically, developed precisely because children's minds, philosophers' minds, grieving minds, curious minds, and so on need different containers. The parent who reads a graduate lecture on light and shadow is failing element 4 (capacity) and possibly element 5 (purpose) at the same time.
Scene 4 — Posting a Dharma talk online. This is the contemporary stress test for 說通. The audience is not one person whose capacity you can read; it is thousands, with wildly varying capacities, and the algorithm rewards what is sharpest, not what is most fitting. Almost every common failure mode corresponds to a classical criterion being violated:
- A video titled "Why your meditation is wrong" — accurate perhaps, but ignores capacity (element 4), and asserts an "awakened vs. deluded" split (element 2). - A long thread defending the "true view" against the "false view" — element 2 violated; the speaker is *clinging* to their view while preaching freedom from views. - A beautifully produced reel that moves no one toward liberation — element 5 violated; it is aesthetic performance. - An endless "beginner's guide to emptiness" that never gets past the warm-up because the teacher is secretly addicted to beginners — element 3 violated; the skillful means has become a comfort zone.
The *Laṅkāvatāra*'s warning about ignorant beings "clinging to the expedient teaching" reads as if written for this predicament.
Scene 5 — A therapist, chaplain, or end-of-life companion. This is where 說通 lives or dies. The work is to be present in such a way that another being can take even one step. The classical criteria map almost perfectly: read the room (隨順), use whatever language or silence is fitting (九部), hold no fixed view about where they "should" be (離相), serve their actual crossing over (度脫) — not your idea of crossing over.
Scene 6 — Explaining a difficult concept in any field — math, music, code, grief, meditation. The recurring temptation is to dump everything. 說通 says: which single piece, *right now*, can this listener actually receive and use? You might be teaching a child fractions, a junior engineer a code review, or a new meditator the breath — the principle is identical. The classical formulation "隨眾生心之所應" applies to every act of teaching, not only to religious instruction.
Where contemporary readers most often map this wrong:
- Mapping 說通 onto "good rhetoric." No. Rhetoric can serve any purpose, including manipulation. 說通 is bound to element 5. - Mapping 說通 onto "say whatever the audience wants to hear." No. That violates elements 2 and 5. The speaker must be free of fixed views *and* serve liberation, not flattery. - Mapping 說通 onto "explaining intellectually." No. The nine genres include story, prophecy, verse, inspired utterance — only one is intellectual exposition. - Mapping 說通 onto "missionary activity." No. The goal is each being's crossing over (度脫), not the expansion of a group.
當代人為什麼需要它 (Why Contemporary People Need It)
說通 is not an antiquarian curiosity. Three features of the contemporary environment make it structurally indispensable.
1. The attention economy makes skillful means look like manipulation, and manipulation look like skillful means. Online, the most "fitting" message is usually the one that captures attention — which often means the one that flatters, frightens, or outrages. A practitioner of 說通 has to keep asking: *fitting for what purpose?* The classical criteria give a sharp answer: fitting for the listener's *liberation* (度脫). Anything that fits the listener's appetite but worsens their bondage — rage-bait that hardens identity, comfort content that confirms avoidance, ideology that flatters the in-group — is, by definition, not 說通, however well-targeted it appears. This criterion — purpose — is what today is most often missing from communication, both religious and secular.
2. Specialization has fragmented us into mutually unintelligible jargons. Doctors, lawyers, engineers, theologians, software developers, parents, adolescents — each has its own 契經, its own sūtra-corpus, and very little ability to translate across. A great deal of contemporary suffering comes from being unable to make oneself understood across these divides. 說通 names a capacity any serious teacher, doctor, or manager must develop: the art of *translating without distortion*. The classical "離異不異、有無等相" is precisely the discipline that prevents translation from collapsing into either dumbing-down ("what I really mean is…") or asserting the superiority of one's own dialect.
3. We have unprecedented access to texts, teachers, and AI explanations, and almost no training in receiving them. A Buddhist teacher in the contemporary world might publish a book, give a podcast, post a thread, appear on a panel — and be received by listeners with vastly different capacities, none of whom can be assumed to have any prior practice. The temptation to imagine "the audience" as a single thing — and to teach to that imagined audience — is the direct contemporary form of the *Laṅkāvatāra*'s warning about ignorant beings who cling to the expedient teaching. A practical remedy is to develop, alongside any subject-matter expertise, an explicit sensitivity to capacity — like a doctor dosing medicine by body weight rather than by enthusiasm.
A note on AI and the life sciences, kept carefully inside their limits. Large language models are extraordinarily fluent at producing text that *looks like* 說通. They can generate jātakas, summarize sūtras, and adapt their tone to the prompt. This is useful and dangerous. Useful because the formal skill of articulation can be supported; dangerous because element 5 (令得度脫) requires an orientation to another being's actual liberation that current AI does not have, and because element 2 (離相) requires the speaker to be free of the very conceptual fixations that training corpora are saturated with. An AI can mimic 說通's surface; it cannot perform its function. A human teacher who uses such tools still bears full responsibility for elements 4 and 5.
Neuroscience offers suggestive parallels — humans are highly attuned to *felt* attunement from another consciousness; we can detect, sometimes subliminally, whether someone is speaking from a place of relative freedom or a place of self-display. This is suggestive but not proof. What 說通 names is not a brain state; it is a *practice*, requiring cultivated freedom from conceptual fixation and a sustained orientation to another's release. The two registers are compatible; they are not interchangeable.
常見誤讀與澄清 (Common Misreadings and Clarifications)
Misreading 1: "說通 means being good at explaining." 說通 is not eloquence, and not pedagogy in the ordinary sense. Element 2 (離相) requires the speaker's mind to be free from one-sided views, and element 5 (度脫) requires the explanation to actually serve the listener's liberation. A skilled rhetorician who uses their skill to sell, persuade, or impress is failing elements 2 and 5 at once. 說通 is closer to *translation in service of another's crossing over* than to "good communication."
Misreading 2: "說通 is just 'say whatever works.'" This treats element 4 (capacity) as the only criterion and erases elements 2 and 5. The classical text is explicit that the speaker must be free of conceptual fixation *and* must aim at liberation. "Whatever works" in service of comfort, ideological victory, or self-image is precisely what 說通 is meant to guard against — it is the very "clinging to the expedient teaching" the sūtra warns about.
Misreading 3: "說通 is the lesser of the two, a kind of apologetics for beginners." The verse 「說者授童蒙，宗為修行者」 is hierarchical only in the sense that everyone begins as a child; it is not a statement of inferiority. A fully realized being continues to need 說通 whenever they turn toward others. The *Laṅkāvatāra* warns that those who fail to understand *either* are in trouble; the sūtra is asking the bodhisattva to master both, not to rank them.
Misreading 4: "說通 is for monastics and teachers, not for ordinary people." If the definition is read literally — "expound the nine divisions of teaching to sentient beings" — yes, that is what teachers do. But the *form* of 說通 is something every adult practices whenever they try to help another human being learn something: a parent, a friend, a manager, a nurse, a coder reviewing a junior's pull request. The classical criteria — capacity, repertoire, freedom from one's own fixation, orientation to the other's liberation — apply to every such act.
Misreading 5: "說通 is about converting others." The classical purpose is 「令得度脫」 — bringing the other across to *their own* liberation, not recruiting them to a group, view, or teacher. 說通 that ends in the listener having adopted *your* view rather than found *their own* release is failing element 2, because the speaker has reinstalled exactly the conceptual fixation the teaching was meant to undo.
Misreading 6: "Once I understand the Dharma, I don't need 說通." Even within the *Laṅkāvatāra*'s framing, every realized being who turns to teach is exercising 說通. The question is never whether to do it, but whether to do it well — i.e., with the full classical repertoire, with freedom from one's own view, with attention to the listener's actual capacity, and with the orientation to liberation.
Misreading 7: "宗通 is what really counts; 說通 is just the wrapper." This treats the two as separable. The classical text treats them as a pair. 宗通 without 說通 is a silent lamp in a locked room; 說通 without 宗通 is an articulate stranger guessing at what might help. The bodhisattva is asked to be both.
A short way to hold all of this: 說通 is the practice of speaking in such a way that another being can take one step they could not take before — and the discipline of doing so without, in the act of speaking, reinforcing the very fixations the speaking is meant to undo. The *Laṅkāvatāra*'s almost throwaway phrase — 「說者授童蒙」 — is not a diminishment but a definition of what teaching is for: those who are not yet where they could be, addressed in a way they can actually use, by someone who has not, in the meantime, lost their own way.