Dharma · AI Companion

一切法不生

sarva-dharmānutpāda

「一切法不生」指一切诸法本性离生灭造作、无起无得之真实理;密教以阿字为其种子表征。AI-generated

Type ViewDifficulty AdvancedTruth-level span II · emptiness ⇢ IV · beyond wordsInitial AI estimate · evolves with use

一切法不生由性空通离言,密教以阿字表征,故可至第四重。

A Contemporary ReadingAI-generated

What This Concept Is Really Saying

When contemporary people first hear "all dharmas are unborn," they tend to take it in one of two directions: either "so nothing really exists" (nihilism), or "things arise and pass, all is impermanent." Both reactions are natural — and both miss the mark of what the 摩訶毘盧遮那成佛神變加持經 (Mahāvairocana Sūtra, 大日經) is actually saying. 本不生 (originally unborn) is a *sharper* diagnosis than impermanence (無常). Impermanence observes that things come and go (生滅). 本不生 observes that arising itself — the moment-by-moment gesture by which something supposedly comes into being — was never actually substantiated in the first place. It is not the claim "things were born and then died," but the more radical claim "the 'birth' was never a real purchase."

This Mahāyāna diagnosis has a long history before the 大日經: it is essentially the same investigation 龍樹 (Nāgārjuna) made famous in the 中論 — examining whether things arise from self, from other, from both, or from no cause — concluding that arising is never established. The 大日經 is not inventing this idea; it is giving that established insight an esoteric practice-shape (字門觀, mandala, mantra, mudra, visualization), so that the truth is no longer just a thesis to assent to but something to stabilize, contemplate, and embody.

The Three Tightly-Linked Terminological Forms

The 大日經 itself uses three linked terms for this truth. They are not redundant — they weight the experience differently, and the 註疏 (commentaries) most often work with 本不生 as the master term:

- 一切法本不生 — *all dharmas are originally unborn* (adya-samutpāda-rahita). The 本 is doing real work. It says: even before you point to any moment in time, this is already the way things are. Not "there was a beginning that ended," but "there was never a 'beginning' that firmly began." - 一切法不生 — *all dharmas are unborn* (anutpāda). A more general predicate that can be applied as a quality. - 自性本寂 — *self-nature is originally quiescent* (prakṛti-śānta). The same insight viewed from the angle of self-nature already being still.

All three phrases sit side by side in the visualization chapters of the sūtra. They are not different doctrines. They are different handles on the same recognition.

阿字 (A) — The Seed-Syllable of 本不生

In esoteric sūtras (密教經典), abstract truths are not left floating. They are tied to a 種子字 (seed-syllable) so that the practitioner can stabilize the insight in body-and-mind. The sūtra's most concentrated line on this concept is itself a foundational text:

阿字門,所謂一切法本不生故。」 *The A-syllable gate [means this]: because all dharmas are originally unborn.*

When you sit into 阿字觀 (A-syllable contemplation), you are not memorising a letter. You are stabilizing the entire doctrine of non-arising in one syllable. The 大日經疏 spells out why 阿 was chosen:

- 阿 carries the meaning of 本初 (the "original-begin"). But here, "original-begin" does *not* mean "the first moment in time." It means the principle by which anything could begin at all — and that principle is precisely 本不生. So the very first sound of speech testifies: nothing truly began. - 離阿聲則無餘字 — "without the sound of A, no other syllable exists." 阿 is the mother of all mantras, the source of all mantra-speech.

Multi-letter seed-meanings for 阿 exist in the technical literature (inclinations toward meanings like no, surprise, desire, excess), but the operative meaning here is 本不生. The contour of the meditation: settle into the silent A before any utterance, then let all utterances unfold from that silence — without ever reifying a real "first utterance." The metaphor is not "an alphabet lesson" but the silence that mothers every word.

本不生 as 金剛智體 and 大空

The commentary delivers one of its densest lines:

法本不生故,雖具足萬行而無所行,是名無師自覺;此即大空遍一切處,於三界不動而至薩婆若,故爾為大乘。

Translation: *Because dharmas are originally unborn, one may fulfill all practices yet not dwell in any practice. This is the unsought self-awakening. It is precisely the great emptiness pervading all places — unmoving through the three realms yet reaching 薩婆若 (sarvajñā, all-knowing wisdom). Hence it is the Great Vehicle.*

This sentence — 雖具足萬行而無所行 — is a practical instruction, not just metaphysics. "Practice everything, but don't inhabit any practice as a self." Emptiness here is not a void; it is a body-of-wisdom with no fixed essence that can still manifest any skillful means. This is the same shape as a famous line from the 維摩詰經 — 「從無住本立一切法」 ("from an unestablished ground, all dharmas are set up") — functions are set up precisely *because* no substrate is held. 不生 and full functioning are not opposed; they are the same body.

Even the Two Obscurations Are Originally Unborn

The commentary gives a striking culinary metaphor in the food-mantra (飲食真言) discussion:

阿字為本初,由此本初即有二種塵垢(煩惱障智障),戲論喧聒由此而起;今以諸法本不生故,二塵亦本不生,即開甘露門成涅槃飯。又以諸法無造作故,內證之味不從他得。

The very first stirring of conceptual activity (戲論) carries two dusts with it: 煩惱障 (kleśāvaraṇa — affective obscuration: greed, anger, deluded passion) and 智障 (jñeyāvaraṇa — cognitive obscuration: subtle obstruction to full knowing). The instinctive reading is "I have to fight these." The Mahāyāna radicalization is: through realizing that all dharmas are originally unborn, the two obscurations are also originally unborn. The dusts, too, were never substantively established. This is not the same as denying the feeling of anger when it shows up. It is denying the metaphysical *solidity* anger presents. Once that claim is seen-through, the commentary says, the nectar-gate (甘露門) opens and the meal itself becomes nirvāṇa-food (涅槃飯) — "the inner-tasted flavor is not obtained from elsewhere" (內證之味不從他得) — meaning you don't have to run anywhere to find liberation; the shift is already complete in the seeing.

This is one of the counter-intuitive clinical insights of the esoteric tradition: you don't get free of obstacles by overpowering them; you get free of them by seeing that the obstacles' claim to "real solid existence" was never honored in the first place.

不生 and 如如 — The A–Ṭa Pairing

Esoteric contemplation often works by seed-pairs. 阿 (originally) pairs with (ta) — which represents 如如 (tathatā, suchness — "such-as-such-ness"). The commentary:

多是諸法如如義;以一切法本不生故,即此如如亦不可得,故如來觀一切法畢竟非如非異,雖不可見而亦明見。

This is a very subtle move. Suchness is often described as the ultimate truth that things are just as they are. But here, *because* all dharmas are 本不生, even 如如 is unobtainable. The Tathāgata observes all dharmas as 畢竟非如非異 — "ultimately neither the same nor different." You cannot freeze them as "this is just what is" (which would harden into eternalism 常見), nor as "totally different from what appears" (which would slide into nihilism 斷見). The 明見 — *clear seeing* that occurs despite our inability to possess these dharmas as objects — is what's pointed at.

In practitioner language: 阿 is the silent empty vessel; 多 is the vessel's "as-it-is-ness"; together they protect each other from collapsing into either void or substance. This is not unlike the way Madhyamaka philosophy protects suchness from reification, but here it is made into an iconographic, contemplative pair.

本不生 as 毘盧遮那's Self-Realized Dharma-Body

The deepest ontological claim is:

一切法門及菩薩皆從毘盧遮那自體自證之心出,以加持力而現種種事能;實則體性不生,同於阿字之法體,故一切真言皆住於阿字。

Every dharma-gate and every bodhisattva emanates from 毘盧遮那 (Vairocana)'s 自體自證之心 — the mind that is *self-evident to itself*. Through 加持 (adhiṣṭhāna, empowerment), this displays all manner of functioning. But its real 体性 (essential nature) is 不生 — identical with the 阿字 dharma-body. Therefore every mantra abides in 阿字.

The takeaway: every authentic spiritual realization you have access to, every mantra, every dharma-gate, every bodhisattva-skill — its final nature is unoriginated. The skill is not in producing some new and unprecedented thing called "unborn." The skill is in seeing what you can already touch as already unborn.

The Visualization Sequence in the Sūtra Itself

The sūtra does not leave 本不生 as a doctrine to assent to. It places it inside a six-step practice. You should hold these six steps clearly because the sūtra places the truth inside the practice rather than as its prerequisite:

1. 金剛合掌 (vajra-clasped palms) and 加持印 (empowerment mudra) — settle the body and hands. 2. 想念「一切法不生,自性本寂」 — let the truth itself arise as a recitation-contemplation, spoken inwardly as a real utterance. 3. 安置並轉變阿字 — place and transform the A-syllable; it doesn't stay as ink on paper, it converts into the felt open ground. 4. 觀成大日牟尼 — visualize into Mahāvairocana, the all-illuminating. 5. 光明普現,遍至眾生界 — light pervading, reaching all beings. 6. 隨性開悟 — each being awakens according to their own nature.

Notice that the truth-recollection ("一切法不生,自性本寂") comes at step 2, before the visualization figures anything out. The visualization does not earn the truth; it rests on it. This single ordering is what prevents esoteric practice from sliding into mystical imagery without ground.

The Letter-Gate (字門) Network — One Insight from Many Sides

The sūtra unfolds the same insight through many seed-syllables. Each letter is not a separate doctrine but a different *angle* on one recognition:

| Seed | Aspect of the same insight | |---|---| | (a) | All dharmas originally unborn — 本不生 | | (va) | All dharmas unobtainable — 不可得 | | (ka) | All dharmas free from fabrication — 遠離造作 | | (kha) | All dharmas equal to space — 等虛空 | | (ga) | Action unobtainable — 行不可得 | | (gha) | All dharmas one-merged-but-unobtainable — 一合相不可得 |

And the sūtra's sweeping series of negations continues the same thrust: 一切法離生滅, 生不可得, 界不可得, 勝義諦不可得, 諸觀不可得, 諸乘不可得, 諦不可得, 離因. Every direction you might reach for a stable substrate — birth, foundation (界), supreme truth (勝義諦), all views (諸觀), all vehicles (諸乘), the truth itself (諦), cause (因) — is gently shown to lack the solid bottom usually assumed. The letter-gates are a complete contemplative matrix where every conceptual foothold is exposed. They are not an alphabet meditation.


A Walk-Through in Contemporary Life

This is where we pull the abstract into the everyday. We'll take one scene most people will recognize and walk through all six visualization steps with it. Then we sketch a few shorter mappings.

Scene. It is late evening. You are about to write an important message — to your partner, your parent, your boss, your future-self in a journal — about something that has been quietly bothering you for weeks. You have the whole evening free. You notice your chest tighten as you open the message app.

Step 1 — 金剛合掌 (Settle). You put the phone down. Maybe you literally put your hands together, maybe you just close your eyes and feel the body. Nothing fancy. The point is one body, one breath, before any utterance. The 金剛 (vajra) here is not a metaphor for toughness; it is the empty-firm quality of being unbroken from moment to moment.

Step 2 — 想念「一切法不生,自性本寂」. Don't immediately narrate *why* the message needs to be written. Rest in the realization that the discomfort was never a thing that has been quietly *traveling* with you across weeks. It keeps presenting as if it has a long history with you, but on close inspection it was never substantially born; each moment of tightness arises newly, moment by moment, without a permanent carrier. This is 本不生: not "I had this feeling and now I am letting go of it," but seeing that the feeling's claim to a stable history is not actually honored by the moment-by-moment texture of experience. The 自性本寂 part is the felt counterpart: even now the chest is also spacious.

Step 3 — 安置並轉變阿字. 阿 in this moment could be the first breath-out — the silent A before the first word. You don't latch onto a thought; you let 阿 be the field itself. You might literally offer a sound: *ahhhhh*, low, open, almost a sigh. The syllable converts from "phoneme" into the unconditioned quality of awareness itself. The room is no longer waiting for your performance; it is already what-it-is.

Step 4 — 觀成大日牟尼 (Visualize the source). Not a Hollywood image. As the 阿 settles, you orient toward Mahāvairocana as the all-illuminating: the very thing that lets the tightening be known, the spaciousness be known, the recipient of the eventual message be known — all of it already functioning, none of it a recent invention. You touch what was never absent.

Step 5 — 光明普現 (Light pervading). From this very-ground, the message begins to write itself. You no longer feel the compulsion to perform an old grievance; you feel the freer slope of saying what is actually *true now*. The "light" is not supernatural; it is the recognition that things are no longer in the dark of habitual reenactment.

Step 6 — 隨性開悟 (Awakening according to one's nature). Whoever receives the message — partner, parent — will respond according to their own nature, not according to your pre-written expectations. You can't supply their awakening. The sūtra already says: you don't have to.

A few shorter mappings:

- Morning commute / inbox overwhelm. When 50 emails feel like a wall that has been quietly building for months, 本不生 is not telling you the emails are unimportant. It is pointing out that the "wall" is being *rebuilt every second* by the same conceptual gesture; it was never a permanent structure with yesterday as its birthday. Now you can read the inbox freshly without the wall. - Doomscrolling / algorithmic feeds. The feed presents each item as if it just now *occurred*. The contemplative mirror is: was this item ever "born" in the way the red-dot badge insists? It is recomposition from countless inputs. The "newness" is a UI gesture, not a metaphysical claim. Seeing this is not cynicism about news; it is unhitching from a specific deception that the interface runs on you. - Creative work and the tyranny of the blank page. "I have to start from scratch" is the cult of origination. 本不生 says: the materials you are working with have been quietly present for years; the "I" who begins is also a series of momentary configurations; what will be written is not being born by you but uncovering through you. This tends to lower the activation energy in concrete ways. - Anxiety about origins — "how did I become this person." The story you construct about how your personality got formed is itself being re-narrated moment by moment. 本不生 is not "you had no childhood"; it is "the 'you' that the story was constructing was never a substrate." This is disorienting at first and relieves enormous pressure over time. - Closeness in relationships. "I want this person to be the way they were when we met." That "first meeting" never substantially existed in the form the memory supplies. Recognizing this does not devalue the meeting — it frees the person (and you) from a phantom of the origin you fell in love with. The person actually in front of you is far more vivid than the pattern-of-origin you keep redrawing.

Where the mapping most often goes wrong

- Mapping "unborn" to "things don't exist." That is nihilism (斷見). The sūtra explicitly pairs 本不生 with 大空遍一切處 *and* 萬行 (full practice). Things function fully; their self-nature simply has no fixed core. - Mapping "originally unborn" to "I never had this problem / this feeling." That is bypass, not realization. The 二障亦本不生 lesson only works if you are also taking the obscuration seriously. The instruction is to see that the obscuration was never substantively established, *not* to pretend the obscuration was not there. - Mapping 阿 to "magic letter." 阿字觀 is not a charm. It is a stabilized mirror of the entire doctrine of non-arising in one syllable. Used as a charm it flattens to superstition; used as a contemplative door-key, it is dense. - Mapping 字輪觀 to "alphabet meditation." The seed-syllables are not pronunciation drills. Each is a distinct angle on the same insight. Treating them as separate doctrines misses the unified contemplative work entirely.


Why People Living Now Particularly Need This

(1) Continuous-piping reality. Contemporary life is a continuous stream of "new things" — feeds, releases, drops, updates, launches. The default metaphysics of the contemporary nervous system becomes "things constantly come into being." 一切法不生 is the corrective to a civilization-nervous-system that is addicted to a specific claim — the claim of origination. It is not telling you to disengage. It is freeing you from a particular, very expensive bill of goods that the stream runs on you.

(2) Generative AI as a careful mirror. Generative models produce "newness" — and yet any careful look at them shows that what is produced is recomposition, not origination. This is a striking contemporary analogue, and it is not a scientific proof of 不生. Too many variables differ (statistical recombination is not the same as unsubstantiated arising; machine "making" is still *a kind* of doing). But it is a useful everyday gesture: when you can't quite believe a thing "truly emerged," that very sense of "where did this come from" is the question 本不生 is responding to from a Buddhist angle. The mirror helps; it does not settle it.

(3) Memory reconsolidation as another careful mirror. Cognitive neuroscience has shown that every act of recall is reconsolidation: the memory is re-stored, slightly altered, each time it is used; it is not retrieved as a fixed object. The "solid past" is, on close inspection, never delivered as a solid object. This is consonant with 本不生 at the *experiential* level. Its limits must be clearly marked: this finding is about specific kinds of memory under specific conditions, not about everything always; it makes claims about cognitive process, not about ultimate truth. Used as a mirror it is illuminating; used as a proof it is a category error.

(4) The pressure of the personal-origin story. Identity work in many contemporary communities leans on building a coherent origin story ("where I come from," "how I became," "my trauma origin," "my gift origin"). Done unreflectively, it locks the practitioner into a metaphysics of origination: there is a self whose history can be narrated, and the narration's job is to make that self coherent. 本不生 liberates without obligating the practitioner to nihilism about their own history. It says: there is no fixed substrate that the story is about. The narrative work becomes freer, less persecutorial, less defended-against.

(5) Burnout and moral-origin stories ("I should be this kind of person because that's who I am"). Many contemporary forms of suffering come from reifying a self-narrative. "I am a caretaker because I was parentified at six." The narrative is useful; the reification of it as identity-substrate is the part 本不生 loosens. You can still act from love; you don't have to defend an origin-story to do so.


Common Misreadings and Corrections

| Misreading | Correction | |---|---| | "Unborn means the world is an illusion." | No. 本不生 is paired with 萬行 (full practice). The world functions fully; its self-nature simply has no fixed core (法體無實性). | | "Unborn is just a fancier word for impermanent (無常)." | Not the same. Impermanence is 生滅 — things arise and decay. 本不生 is non-arising — arising itself was never substantively established. Sharper diagnosis. | | "Originally unborn means the world pre-existed in some eternal state." | No. 本 does not mean "previously existed." It means "at no point was a fixed origination ever supplied." | | "Just relax; don't worry about anything." | No. Relaxation can be a surface experience. 本不生 includes 雖具足萬行 — full, unflinching practice. Relaxation without the gazing-through part is not the teaching. | | "The 阿 character is a magic charm." | No. 阿字觀 is a stabilized mirror of an entire Mahāyāna doctrine in one syllable. Use it as a charm and it collapses; use it as a doorway and it is dense. | | "This is only a Tantric / esoteric idea." | No. 本不生 sits at the heart of mainstream Mahāyāna philosophy. The 大日經 is providing an esoteric *practice-form* for an insight already established across the tradition (e.g., the 中論 examination of arising). | | "Once you see this, you can't do anything anymore." | No. 雖具足萬行而無所行: *practice everything, cling to nothing.* Emptiness and full functioning are the same body. 大空遍一切處. | | "It only applies in special meditation states." | No. The sūtra places it inside an everyday-feeling six-step practice that any trained practitioner can enter — body and breath first, then contemplation of the truth, then the syllable, then the visualization, then release into the world. | | "The two obscurations being 'originally unborn' means I don't have to work on them." | No. The instruction is to see that the obscurations' solid status was never honored — *while* still engaging them. Bypassing "they were never there" is itself a form of obscuration. |


A useful closing phrase to hold through all the elaborate structure is the sūtra's own short line, the practitioner-breath of the entire path:

一切法不生,自性本寂。 *All dharmas are unborn; self-nature is originally quiescent.*

It is short enough to breathe, and deep enough to be the entirety of the path. Held long enough — not as a slogan but as the actual texture of how things are appearing to you — and you have begun to enter the meaning of 阿字門. The 大日經 does not ask you to manufacture a new state. It asks you to recognize, in the texture of this breath, what was never absent and never substantially arrived: the 大空遍一切處, the great emptiness pervading every place, unmoving through the three realms, a body you can practice within and a body you can release into the world without grasping.

Canonical EntryAI-generated

一、定义与核心要义

「一切法不生」又作「一切法本不生」,意谓一切诸法于究竟实相中本无生灭、不可得、离造作。此概念在密教经典中并非仅作抽象之理则陈述,而是与阿字观、字门、三昧道等具体观行直接结合,以阿字为「本不生」之种子表征,使此真实成为修观与加持的根本内容。

二、主要阐述

(一)阿字为本不生之种子 《大日经》以「阿字门」标举「一切法本不生」:「阿字门,所谓一切法本不生故」。阿字为「本初」义,表一切法本不生;离阿声则无余字,故阿字为诸字之母、一切真言之生处。此为密教字轮观之根本。

(二)本不生即同金刚智体 法本不生故,虽具足万行而无所行,是名无师自觉;此即大空遍一切处,于三界不动而至萨婆若,故尔为大乘。

(三)由本不生而二障亦本不生 以饮食真言为例:阿字为本初,由此本初即有二种尘垢(烦恼障与智障),戏论喧聒由此而起;今以诸法本不生故,二尘亦本不生,即开甘露门成涅槃饭。又以诸法无造作故,内证之味不从他得。

(四)本不生与「如如」之关系 如来眼真言以多字为体,多是诸法如如义;以一切法本不生故,即此如如亦不可得,故如来观一切法毕竟非如非异,虽不可见而亦明见。

(五)本不生为毘卢遮那自证之法体 一切法门及菩萨皆从毘卢遮那自体自证之心出,以加持力而现种种事能;实则体性不生,同于阿字之法体,故一切真言皆住于阿字。

(六)字门与三昧道中的展开 阿字之加持使空中流散的假立成就三昧道;阿字住于种种庄严、布列图位,并因「一切法本不生」而「显示自形」。一系列字形分别显示诸法不可得、远离及无相等侧面:嚩字表示不可得,迦字表示诸法远离造作,佉字表示一切法等虚空,誐字表示行不可得,伽字表示诸法一合相不可得;又说一切法离生灭、生不可得、界不可得、胜义谛不可得、诸观不可得、诸乘不可得、谛不可得及离因。

(七)观想次第中的展开 由金刚合掌与加持印,想念「一切法不生,自性本寂」之真实,安置并转变阿字,进而观成大日牟尼及其光明普现、遍至众生界而随性开悟。

三、不同部类与译本的表述差异

(一)就同经而言,《大日经》本身兼用三种紧密相联的术语形式:「一切法本不生」「一切法不生」「自性本寂」。「本不生」侧重法体本来不生之义;「不生」为更一般之陈述;「自性本寂」则从体性寂静一面加以补充。三者并行于本经观想次第之叙述中。

(二)就经疏对照而言,《大日经》以「阿字门」「一切法本不生」标举此义;《大日经疏》则承此而以「本不生」为主,并辅以「体不生」「法体」「无造作」等表述,将此义落于字门观行中。疏中以阿字种子与真言心相配,发挥字轮观之深旨。

(三)疏中复以多字为如如义,与阿字之不生义相配:阿为本初,多为如如,二字共同构成对诸法体性的双重展开。

四、与相关概念的关系

(一)与阿字:阿字为「一切法本不生」之种子,二者关系密不可分。经文以「阿字门,所谓一切法本不生故」明其内在联结。

(二)与金刚智体、大空:法本不生故同于金刚智体,即是大空遍一切处。此义于三界不动而至萨婆若,故为大乘之根本。

(三)与二障(烦恼障、智障):以诸法本不生故,二障亦本不生;由此开甘露门成涅槃饭。

(四)与如如:多字表如如义;以一切法本不生故,如如亦不可得,故诸法毕竟非如非异。

(五)与毘卢遮那自证:一切法门及菩萨皆从毘卢遮那自体自证之心出,体性不生,同于阿字之法体。

(六)与三昧道、三昧门、种子心、字轮观:阿字之加持成就三昧道;字门展开诸法不可得之义;此皆「本不生」在观行脉络中的具体落处。

五、代表性原文引用

- 《大日经》:「阿字门,所谓一切法本不生故。」 - 《大日经》:「一切法不生,自性本寂。」 - 《大日经疏》:阿字为本初义,表一切法本不生;离阿声则无余字,故阿字为诸字之母、一切真言之生处。 - 《大日经疏》:法本不生故,虽具足万行而无所行,是名无师自觉;此即大空遍一切处,于三界不动而至萨婆若,故尔为大乘。 - 《大日经疏》:阿字为本初,由此本初即有二种尘垢(烦恼障与智障),戏论喧聒由此而起;今以诸法本不生故,二尘亦本不生,即开甘露门成涅槃饭。 - 《大日经疏》:多是诸法如如义;以一切法本不生故,即此如如亦不可得,故如来观一切法毕竟非如非异,虽不可见而亦明见。 - 《大日经疏》:一切法门及菩萨皆从毘卢遮那自体自证之心出,以加持力而现种种事能;实则体性不生,同于阿字之法体,故一切真言皆住于阿字。

By SutraAI-generated

大毘盧遮那成佛神變加持經(大日經)T0848 · 密教部

《大毘盧遮那成佛神變加持經(大日經)》以「一切法本不生」與「一切法不生」為核心表述,並以「自性本寂」說明其義:行者應想念此一真實,於觀想中安置阿字。經文因而不是只作抽象陳述,而是把法之無生、本寂與阿字觀直接聯結,令此真實成為修觀與加持的根本內容。

本經論述此義最具特色之處,是以「阿字門」標舉「一切法本不生」。大日如來種子心以阿字為要,而經文隨即釋明:「阿字門,所謂一切法本不生故。」故本經記錄此概念時,應特別保留其自身用語「阿字門」及「一切法本不生」,不可僅以一般性的「無生」代替,因為阿字正是本經呈現此真實的特定形式。

在字門與三昧道的敘述中,阿字之加持使空中流散的假立成就三昧道;阿字住於種種莊嚴、布列圖位,並因「一切法本不生」而「顯示自形」。這表示本不生之義在本經中又與字形、圖位、莊嚴及三昧門相連:阿字不是單純的文字標記,而是在觀行敘述中顯示諸法本不生的自形。

經文又以一系列字形分別顯示諸法不可得、遠離及無相等側面:如嚩字表示不可得,迦字表示諸法遠離造作,佉字表示一切法等虛空,誐字表示行不可得,伽字表示諸法一合相不可得;又說一切法離生滅、生不可得、界不可得、勝義諦不可得、諸觀不可得、諸乘不可得、諦不可得及離因。這些語句由不同字門展開,但均圍繞諸法不由可得之生、作、因或相而成立的描述。

此外,本經把「一切法不生,自性本寂」置於大日牟尼觀想的次第中:由金剛合掌與加持印,想念此真實,安置並轉變阿字,進而觀成大日牟尼及其光明普現、遍至眾生界而隨性開悟。因此,本經對「一切法不生」的論述,同時採用「本不生」「不生」「自性本寂」三種緊密相聯的術語形式,並以「阿字」「阿字門」「種子心」「加持」「三昧道」及「三昧門」構成其具體表達脈絡。

大毘盧遮那成佛經疏(大日經疏)T1796 · 經疏部

《大日經疏》以「一切法本不生」為一核心命題,貫穿全疏對真言字輪、印契及諸尊法門的詮釋。其論述有以下數端:

一、以阿字為「本不生」之種子。阿字為本初義,表一切法本不生;離阿聲則無餘字,故阿字為諸字之母、一切真言之生處。此為密教字輪觀之根本。

二、本不生即同金剛智體。法本不生故,雖具足萬行而無所行,是名無師自覺;此即大空遍一切處,於三界不動而至薩婆若,故爾為大乘。

三、由本不生而二障亦本不生。疏中以飲食真言為例:阿字為本初,由此本初即有二種塵垢(煩惱障與智障),戲論喧聒由此而起;今以諸法本不生故,二塵亦本不生,即開甘露門成涅槃飯。又以諸法無造作故,內證之味不從他得。

四、本不生與「如如」之關係。如來眼真言以多字為體,多是諸法如如義;以一切法本不生故,即此如如亦不可得,故如來觀一切法畢竟非如非異,雖不可見而亦明見。

五、本不生為毘盧遮那自證之法體。一切法門及菩薩皆從毘盧遮那自體自證之心出,以加持力而現種種事能;實則體性不生,同於阿字之法體,故一切真言皆住於阿字。

疏中用詞以「本不生」為主,輔以「體不生」「法體」「無造作」等表述;常以阿字種子與真言心相配,將此義落於字門觀行中。

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