Dharma · AI Companion

自然智

svayambhū-jñāna

不由他教而自然证得的智慧。AI-generated

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

自然智为佛不共智,须借大乘般若性空为基(2),至法尔无功用之佛内证智、通于离言(4);密教本初自然智一读属他系,不并入。

A Contemporary ReadingAI-generated

This Concept in Essence

In the landscape of Buddhist liberation, Svayambhū-jñāna (自然智 / 无师自然智, *Spontaneous or Unproduced Wisdom*) occupies a unique and radical position. Rather than a set of facts acquired through external study or a technical skill bestowed by an outside master, it is defined as the supreme, unblemished wisdom inherent in the original nature (*svabhāva*) of every sentient being. It requires no external teacher to ignite, operates without dependence on foreign conditions, and possesses the innate power to sever primordial ignorance (*avidyā*) to reveal the Tathāgata’s ultimate intrinsic enlightenment (*benjue* 本覺).

To understand where Svayambhū-jñāna stands in the path of liberation, one must grasp a foundational Buddhist premise: spiritual awakening is not an act of *accumulation*, but an act of *uncovering*.

In the *Avataṁsaka Sūtra* (華嚴經), this principle is illuminated through the famous metaphor of the Great Sutra Scroll in a Single Micro-particle (微塵大經卷喻). The scriptures describe a vast, infinite sutra scroll—equal in volume to a cosmic world system of three thousand great thousand worlds—containing a complete record of every event, principle, and phenomenon in existence. Yet, through an extraordinary mystery, this monumental scroll resides entirety inside a single tiny speck of dust. In the exact same way, the infinite, unhindered wisdom of the Buddha is fully present inside the body and mind of every ordinary being (*zhongsheng* 眾生).

Why, then, do we not experience this luminous wisdom? The sūtra answers: solely because of "delusive thoughts, inverted views, and attachments" (*wangxiang diandao zhizhuo* 妄想顛倒執著). We are like a person carrying an endless treasury while begging for scraps. Once an individual thoroughly abandons these habitual delusions (*yongli wangxiang* 永離妄想), this inherent wisdom does not need to be imported from outside—it naturally manifests (*zi ran xian qian* 自然現前).

To guard against confusing this supreme wisdom with ordinary mental sharpness, the canonical texts—most notably the *Māhapratisaṁsarā* section of the *Ratnakūṭa Sūtra* (大寶積經)—draw an uncompromising, strict boundary between Cognitive Consciousness (*Vijñāna* / 識) and Liberative Wisdom (*Jñāna* / 智):

* Vijñāna (識 - Consciousness): Refers to mental activity that arises from external objects (*jǐngjièi* 境界), intentional focus (*zuòyì* 作意), and dualistic discrimination (*fēnbié* 分別). It operates entirely within the realm of conditioned (*yǒuwéi* 有為), arising-and-ceasing (*shēngmiè* 生滅) phenomena. It is reactive, conditional, and bound to subject-object duality. * Jñāna (智 - Wisdom): Refers to an awareness characterized by "non-grasping and non-holding" (*wúqǔ wúzhí* 無取無執), "having no objective reference point" (*wúyǒu suǒyuán* 無有所緣), and "devoid of conceptualization or discrimination" (*wúsuǒ liǎobié, wúyǒu fēnbié* 無所了別、無有分別). It directly penetrates the unconditioned (*wúwéi* 無為), the unarising and unceasing (*bùshēng bùmiè* 不生不滅), and remains fundamentally unlocalized (*wúsuǒzhù* 無所住).

The *Śūraṅgama Sūtra* (大佛頂首楞嚴經) deepens this through the haunting parable of Yajñadatta Searching for His Head (*Yǎnruòdáduō kuángzǒu xúntóu* 演若達多狂走尋頭). Yajñadatta woke up one morning, looked in a mirror, and loved the face he saw. But because he couldn't see his own head directly with his own eyes, he panicked, assumed his head was lost, and ran wildly through the city asking everyone where his head had gone. His head was never missing; it was naturally there all along (*tóu běn zìrán* 頭本自然). His frantic quest was itself the madness. The moment his frantic mind ceased, he realized his head had been right where it always was. Svayambhū-jñāna is that very "head"—it is not something you go out to buy, earn, or install; it is the intrinsic lucidity that remains when the frantic search of the dualistic mind stops.


A Walkthrough of Daily Life

To understand how Svayambhū-jñāna functions—and where we constantly confuse it with something else—let us trace a modern, ubiquitous experience: working on a high-stakes project while navigating smartphone notifications.

Step 1: The Trigger & The Birth of *Vijñāna* (識 - Consciousness)

You are sitting at your desk late at night. Suddenly, your phone screen lights up with a Slack notification from your manager: *"We need to talk about the quarterly numbers tomorrow morning."*

* **The Object (*Jǐngjièi* 境界)**: Light emitting from a screen displaying text. * **Intentional Focus (*Zuòyì* 作意)**: Your attention snaps immediately to the phone. * **Discrimination (*Fēnbié* 分別)**: Within milliseconds, your mind categorizes the message: *"Is my job in danger? Did I make a mistake?"* * **The Reaction (*Shēngmiè / Yǒuwéi* 生滅 / 有為)**: Cortisol surges through your body. Your heart rate accelerates. A narrative unfolds in your head about failure, mortgage payments, and future embarrassment.

*Where people mistake the concept:* Most people call this rapid processing "intelligence" or "sharp intuition." They think, *"I am so perceptive; I immediately foresaw all the potential catastrophes!"* But in the Buddhist framework, this entire sequence is purely Vijñāna (識). It is conditioned, reactive, born from external objects, and rooted in self-referential grasping (*zhí* 執).

Step 2: The Loop of Conceptual Delusion (*Wàngxiǎng Zhízhuó* 妄想執著)

To cope with the anxiety, you open five tabs on your computer, check spreadsheet algorithms, search online for interview questions, and draft defensive emails. You are frantically looking for security—just like Yajñadatta running through the streets asking strangers where his head is. You assume that peace will only arrive *after* you accumulate enough information or secure an external guarantee.

Step 3: The Flash of *Svayambhū-jñāna* (自然智 - Spontaneous Wisdom)

Suppose that amid this frantic spiral, you suddenly take a breath. In that brief pause, a quietly luminous, spacious awareness notices the whole scene: It notices the physical tightness in your chest. It notices the frantic narrative spinning in your brain. It notices the blue light of the screen.

Crucially, this underlying awareness itself is not anxious. It does not push the notification away, nor does it cling to it. It has "no objective reference point" (*wúyǒu suǒyuán* 無有所緣) and is "devoid of conceptual grasping" (*wúqǔ wúzhí* 無取無執). It is simply aware—clear, mirror-like, and unshakeable.

This spacious, non-reactive clarity is an expression of Svayambhū-jñāna—the unproduced, innate wisdom (*běnjué* 本覺). * **Why is it "Unproduced/Spontaneous" (*Zìrán* 自然)?** Because you didn't have to download a mindfulness app or consult a guru to create this awareness. The awareness was already there, illuminating the anxiety, just as sunlight illuminates both clean air and dust particles. * **Why is it "Without a Teacher" (*Wúshī* 無師)?** No mentor taught your mind how to be aware. The capacity for luminous awareness is built into the very fabric of consciousness itself.

When you rest in this intrinsic wisdom, the Slack message remains just text on a screen. Action can still be taken—you might calmly review your files—but the existential terror vanishes because you are no longer mistaking the temporary storm of *Vijñāna* for the sky of your mind.


Why Modern People Need It

We live in an age characterized by an unprecedented addiction to external seeking (*wàiqiú* 外求). Modern culture conditions us to believe that every internal deficit can be solved by an external acquisition: another degree, another self-help framework, another supplement, or a better productivity system.

Svayambhū-jñāna offers a radical, liberating alternative. It reminds us that our fundamental lack of peace is not a data deficiency, but a recognition failure.

``` +-----------------------------------------------------------------------------------+ | THE ARCHITECTURE OF AWARENESS | +-----------------------------------------------------------------------------------+ | | | [ EXTERNAL WORLD / DATA ] ---> Vijñāna (識 - Consciousness) | | • Driven by inputs & algorithms | | • Operates via dualistic discrimination | | • Bound to birth & death (anxiety/craving) | | | |-----------------------------------------------------------------------------------| | | | [ INHERENT NATURE ] ---> Svayambhū-jñāna (自然智 - Unproduced Wisdom) | | • Unconditioned, clear awareness (*Benjue*) | | • Non-grasping, non-localized (*Wushuozhu*) | | • Inherent in all beings; uncovered, not built | | | +-----------------------------------------------------------------------------------+ ```

1. The Paradox of AI and Cognitive Science

Today, Large Language Models and AI systems process vast oceans of information at lightning speed. To the untrained eye, AI seems to exhibit incredible "wisdom." However, using canonical Buddhist taxonomy, AI is the ultimate manifestation of Vijñāna (識): * It relies entirely on external boundaries (*jǐngjièi*—training data). * It operates through mathematical discrimination (*fēnbié*—pattern prediction). * It resides strictly in the conditioned realm (*yǒuwéi*).

AI can synthesize knowledge, but it lacks Jñāna (智)—it has no unconditioned, non-grasping, self-aware lucidity (*míngxìng* 明性). Modern neurosciences and artificial intelligence research aim to reduce human mind-states to algorithmic data processing and neural firing patterns. While neuroscience excels at mapping the brain's functional mechanics (the physical correlates of *Vijñāna*), empirical science operates under an inherent epistemological limitation: it attempts to observe awareness through externalized objects and empirical measurements. It cannot observe the unconditioned nature of *Jñāna* itself, because *Jñāna* is not an object to be seen, but the very subjective light by which seeing occurs (*jiànjiàn zhī shí, jiàn fēi shì jiàn* 見見之時,見非是見).

Understanding Svayambhū-jñāna protects modern individuals from reducing their human dignity to mere biological algorithms. It asserts that at your core, you are not a machine requiring constant software updates, but a vessel of innate, uncreated light.

2. Curing "Self-Improvement Exhaustion"

The modern self-help industry often exacerbates anxiety by telling people they are fundamentally broken and need to "build" a new self. The doctrine of Svayambhū-jñāna reframes spiritual and psychological growth: you are not a ruined house that needs to build a foundation from scratch; you are a palace covered in temporary dust. The work of liberation is not adding concrete, but sweeping away the dust of delusion (*chú wàngxiǎng* 除妄想).


Common Misunderstandings & Clarifications

Because the term "Natural/Spontaneous Wisdom" (*Zìrán Zhì* 自然智) contains words that overlap with everyday language and non-Buddhist philosophies, it is frequently misconstrued. Here are three critical clarifications:

Misunderstanding 1: Confusing "Spontaneous Wisdom" (*Zìrán*) with Heterodox Naturalism or Daoist "Spontaneity"

* The Error: Assuming that because wisdom is "natural" (*zìrán*), one should simply follow raw physical impulses, reject moral discipline, or adopt a fatalistic belief that everything is automatically fine without any practice. * The Canonical Clarification: This was precisely the confusion raised by Venerable Ānanda in the *Śūraṅgama Sūtra*. Ānanda asked whether this inherent, unceasing nature was identical to the "Naturalism" (*Zìrán* 自然) taught by contemporary non-Buddhist Indian schools. * The Buddha explicitly refuted this. Heterodox naturalism postulates an ultimate, static ontological substance called a "nature entity" (*zìrán tǐ* 自然體) or primary cause. The Buddha explained that true innate wisdom is "neither cause nor condition, nor spontaneity nor non-spontaneity... transcending all marks, yet identical with all phenomena" (*fēi yīn fēi yuán, yì fēi zìrán, fēi bù zìrán... lí yīqiè xiàng, jí yīqiè fǎ*). * Furthermore, "without a teacher" (*wúshī*) does not mean discarding spiritual teachers or practice. As the *Ratnakūṭa Sūtra* records, rowers of the spiritual vessel achieve Svayambhū-jñāna by diligently practicing insight/contemplation (*Vipassanā* / 毘舍那) and cultivating deep roots of merit across time. The practice does not *create* the wisdom; rather, practice removes the obstructions that obscure it.

Misunderstanding 2: Equating "Spontaneous Wisdom" with Gut Instincts or Emotional Intuition

* The Error: Thinking, *"I had a sudden hunch or emotional impulse, so that must be my inner Svayambhū-jñāna speaking!"* * The Canonical Clarification: Most "gut feelings" or visceral intuitions are simply subconscious operations of Vijñāna (識)—rapid, unexamined reactions conditioned by past karmic habits (*yèqì* 業氣), hidden fears, or buried desires. * As defined in the *Ratnakūṭa Sūtra*, true *Jñāna* is strictly characterized by being devoid of conceptual grasping, devoid of subjective projection, and unattached to any local reference point (*wúqǔ wúzhí, wúyǒu suǒyuán, wúsuǒ liǎobié*). If an "intuition" carries subtle fear, defensive pride, or self-centered desire, it is an operation of subtle conceptual consciousness (*wàngxīn jìdù* 妄心計度), not Svayambhū-jñāna.

Misunderstanding 3: Viewing Svayambhū-jñāna as a New Reward Earned at the End of the Path

* The Error: Conceptualizing Svayambhū-jñāna as a trophy or a magical power that will be handed to you in the distant future after decades of painful effort. * The Canonical Clarification: If wisdom could be newly produced by cause and effect, it would be a conditioned phenomenon (*yǒuwéi fǎ* 有為法), which means it would eventually decay and vanish. * The *Avataṁsaka Sūtra* underscores that Svayambhū-jñāna is *already fully present* within your mind right now. Like the sun obscured by dark clouds, the sun does not come into existence when the wind blows the clouds away; the sun was shining with full wattage the entire time. Liberation is simply the courage to stop chasing the clouds and recognize the uncreated light that is already watching.

Canonical EntryAI-generated

一、定义与核心要义

「自然智」(svayambhū-jñāna),又称无师自然智,是指众生自性本具、不假外求、非由外在导师灌输而自性自悟的无上清净智慧。在经典中,它常与「无师智」、「一切智」并提,被视为断除无明、超脱生死、利乐一切世间的根本力量。此智慧在众生位因妄想执着而隐没,若能永离妄想,则此本具之智自然现前。

二、主要阐述

1. 众生本具与离妄现前 经典一致强调自然智是众生本自具足的,而非从外得。在《大方廣佛華嚴經》中,这一原理通过著名的「微塵大經卷」喻得到了生动阐释:如来智慧如同量等三千大千世界的大经卷,其中书写了三千大千世界中的一切事物,而这部巨大的经卷却完整地「全住在一微塵中」。这比喻无量无碍的如来智慧「具足在於眾生身中」 或「遍在眾生心」。然而,凡夫因「妄想顛倒執著」而不知不見,无法证得。一旦众生能够「永離妄想」或「除妄想」,则「一切智、自然智、無礙智則得現前」,使此本具的智慧得以出现并饶益大众。同样,《大佛頂首楞嚴經》也指出,众生的见、闻、觉、知等了别之性「圓滿湛然,性非從所」,本非从外而来,与地、水、火、风、空等「七大」一样,「性真圓融,皆如來藏,本無生滅」。这种本具的智慧与觉性被称为「精真妙明本覺圓淨」或「本覺妙明真精」,它不留生死与尘垢。

2. 无师自悟与修行成就 自然智具有「无师」的独特特质。在《大方廣佛華嚴經》中,行者若能信解并随顺悟入此不可思议的智慧法门,便能「住無師法,深入如來無礙境界」。菩萨在成就相关功德后,便能「以自然智離一切世間垢」,并且「少作功力,得無師自然智」。在《大寶積經》中,自然智与「無師智」并提,是众生破除无明壳、超于天人、利乐世间的希有智慧。关于其成就路径,经中指出佛陀依凭「毘舍那」(即观)审视一切法,菩萨通过随顺学习此方法便能「成就自然智」;同时,行者也需要「往昔供養自然智」,并历经多劫勤修苦行,以求得最胜的「諸慧蘊」。

3. 智慧的体性与识智之辨 为了阐明自然智的无分别与无执着特征,经典对「识」与「智」进行了严格辨析。《大寶積經》指出,凡是从境界、作意、分别而生,且住于有为、生灭法中的称为「識」;而「無取無執、無有所緣、無所了別、無有分別」,且能了达无为之法、不生不灭、无所住的,才被称为「智」。此外,《大方廣佛華嚴經》从本体论上厘清,智慧与无智的体性各异(「其體各殊異」),「無有從無智,而生於智慧」,两者「究竟無和合」。本具的「自然智」正是对治与消灭「無智」的根本力量,如同阿伽陀药能灭一切毒。

三、不同部类与译本的表述差异

在不同部类及译本中,对于相关概念和术语的翻译与表述存在明显的差异: 1. 五蕴的称呼:在指代「五蕴」时,《大寶積經》既使用了「五陰」(如「不得五陰六衰四大」),也使用了「慧蘊」(如「最勝諸慧蘊」) 的表述。而《大佛頂首楞嚴經》则统一使用「五陰」称呼「五蘊」,并指出「五陰本因同是妄想」,详细剖析了「堅固第一妄想」、「虛明第二妄想」与「融通第三妄想」等不同层次。 2. 授记的译名:《大寶積經》中将「授记」译为「受決」或「授決」,并以此阐述「住於自然」的深义。 3. 观的译名:《大寶積經》将「毗婆舍那」(观)译为独特的「毘舍那」。 4. 觉性与智慧的特定术语:《大方廣佛華嚴經》常使用「無師法」与「無師自然智」。而《大佛頂首楞嚴經》则使用了一系列独特的密教部术语,如「妙覺明性」、「本覺」、「本覺妙明真精」、「精真妙明本覺圓淨」 以及「性識明知、覺明真識」 等,来指代众生本具的清净觉性。在描述觉性的自我证知时,该经还使用了「見見之時,見非是見,見猶離見」的独特表述。

四、与相关概念的关系

1. 与「无师智」、「一切智」的关系 自然智与「无师智」、「一切智」相辅相成。在《大寶積經》中,自然智属于「最上清淨之法」,菩萨契入「清淨自然之智」后,能转无上清净法轮,并渐次为无量众生摄取无上「一切智智」。佛陀本身即具足自然智,但经中同时强调,佛陀与此「自然智」的本性皆是「亦如幻」的,体现了其无自性的空寂本质。 2. 与外道「自然」及世间「因缘」的关系 这是《大佛頂首楞嚴經》论述的重点。该经严格区分了本具的觉性与外道所执的「自然」及世间的「因缘」。阿难曾疑惑此不生不灭的觉性是否等同于外道「自然」,佛陀予以否定,指出若觉性是「自然」,则必须有其「自然體」。佛陀阐明,世间因缘相并非第一义,而「精覺妙明」之性是「非因、非緣,亦非自然、非不自然;無非、不非,無是、非是;離一切相,即一切法」。凡将觉性惑为因缘或自然者,皆是「識心分別計度,但有言說,都無實義」,本质上都是众生的「妄心計度」。经中以「演若達多狂走尋頭」喻论证,其头本来就自然存在(「頭本自然,本自其然」),非因缘得失;一旦狂心止息,则「因緣、自然俱為戲論」。这种非和合的本然之性,超越了「和合」与「本然」的相对概念(「本然非然,和合非合,合、然俱離」)。 3. 与「住于自然」及「受决」的关系 在《大寶積經》中,「自然」一词被赋予了形而上的延伸。密迹金刚指出,「受決」(授记)实际上是「無所逮」,而其立足点正是「住於自然」。这里的「自然」被等同于「無二本際、無我本際、無人壽命」,即超越了自我、寿命及二元对立的本际状态。

五、代表性原文引用

1. 《大方廣佛華嚴經》:「無一眾生而不具有如來智慧,但以妄想顛倒執著而不證得……若離妄想,一切智、自然智、無礙智則得現前。」 2. 《大寶積經》:「若有眾生求自然智、無師智者,當為開示此最上清淨之法。菩薩摩訶薩入此清淨自然之智,能轉無上清淨法輪,漸次能為無量眾生攝取無上一切智智。」 3. 《大寶積經》:「從境界生、從作意生、從分別生,住於有為、生滅法中,是名為識。無取無執、無有所緣、無所了別、無有分別,了達無為、不生不滅、無所住者,是名為智。」 4. 《大佛頂首楞嚴經》:「精覺妙明,非因非緣,亦非自然,非不自然,無非不非,無是非是,離一切相,即一切法。」 5. 《大佛頂首楞嚴經》:「妙覺湛然,遍周法界……此見及緣,元是菩提妙淨明體,云何忽有山河大地諸有為相?」

By SutraAI-generated

大方廣佛華嚴經(八十華嚴)T0279 · 華嚴部

《大方廣佛華嚴經(八十華嚴)》論「自然智」,主要有兩個層面:一是眾生本具而為妄想所覆,離妄即現;二是菩薩聞法悟入後,以極少功力證得「無師自然智」。

第一,自然智為一切眾生本具之智。經云:「無一眾生而不具有如來智慧,但以妄想顛倒執著而不證得;若離妄想,一切智、自然智、無礙智則得現前。」 此處自然智與一切智、無礙智並列為三,同屬眾生身中本自具足之如來智慧,非從外得。其所以不現前,唯因妄想顛倒執著障蔽;一旦離妄,三智同時現前,不假修成。經以大經卷住於微塵為喻:如來智慧「無量無礙,普能利益一切眾生,具足在於眾生身中」,凡愚以妄想執著故不知不覺、不得利益。如來以無障礙清淨智眼普觀法界,教以聖道,令眾生「永離妄想執著,自於身中得見如來廣大智慧與佛無異」。是知本經立自然智之要義,首在「本具」與「離妄即現」,非關漸次修證。

第二,自然智與「無師」義合,稱「無師自然智」。經云菩薩聞此如來無量不可思議無障無礙智慧法門,信解悟入,則能「住無師法,深入如來無礙境界」;又能「以自然智離一切世間垢」。此處自然智之功用,在離世間垢染,與以菩提心入十方網、以大觀察知三世諸佛同一體性等並列,為菩薩成就功德之一門。經末總結云:「菩薩摩訶薩成就如是功德,少作功力,得無師自然智。」「少作功力」正顯「自然」之義——非由多劫勤苦造作而得;「無師」則顯「不由他教」之義——非從師授而後知。本經以「無師自然智」一語,將自然智之兩重涵義(不待師教、不假造作)合為一名,此為本經論述該概念之獨特複合用語。

第三,就術語形式言,本經徑用「自然智」,又複合為「無師自然智」;相關所住之境則以「無師法」表述。與一切智、無礙智並舉時,三者同為離妄所現之本具智,未另立異名。

大寶積經T0310 · 寶積部

《大寶積經》論「自然智」,散見於數會,用語形式與語境各有側重,可歸納如下。

一、與「無師智」並舉,標為菩薩所求之果。無邊莊嚴菩薩啟問之緣起,即為「求自然智及無師智」之有情而發,謂此智「破無明殼超於天人,最為殊勝希有」,並與「大智無畏」「無邊知見善巧」相連,屬趣求一切智善巧地之菩薩所志。此處自然智與無師智對舉,強調不假他悟、不由師授之義。

二、與「一切智智」並列,為菩薩所入之清淨智。經云菩薩得無邊門、無量門現前,「逮得最上清淨之法,一切智智及自然智」,繼而「能入清淨自然之智,能轉無上清淨法輪」。此處用語作「自然之智」,與「一切智智」同為菩薩所逮得、所趣入者,且為轉法輪、攝取眾生之前提。

三、以「自然」為受決之所住。密迹金剛力士答寂意菩薩問,謂「住於自然,無二本際、無我本際、無人壽命。住於自然乃曰受決」。此處未逕言「自然智」,而以「自然」為本際平等、無生無滅之理境,受決即住於此自然,與前述作為智慧之自然智形成互補:智為能證,自然為所住。

四、以「自然慧」為異稱,喻不假外光之明見。經以盲人、有目之士、天眼為喻,謂「若有男子有自然慧,不用光明以成就眼,以有大智德其行如是」。此處用「自然慧」而非「自然智」,義涵相同——不待外緣光明而自成就見,屬菩薩精進行中所具之智德。同段又言「自然道寶現於世間」,以轉輪聖王七寶喻菩薩七度,「自然」兼有法爾現成之義。

五、以「自然智」為所供養之對象,近乎佛之代稱。發願偈云「往昔供養自然智,多劫勤修諸苦行,為求最勝諸慧蘊」。此處自然智非泛指智慧,而指過去佛或佛所證之智,為菩薩多劫供養、苦行所求之目標。

六、以「自然智」為佛德之稱號。偈頌云「善逝導師自然智,十力大悲智無量,智慧自在世間最」,將自然智與善逝、導師、十力、大悲並列,作為如來功德之稱謂,且置於「一切悉皆如幻化」之般若觀照下,謂佛之自然智亦如幻而無礙。

七、以「成就自然智」為菩薩隨學之果。短偈云「佛依毘舍那,能視一切法,菩薩隨順學,成就自然智」。此處自然智為菩薩隨順佛學而最終成就者,與毘舍那佛之遍視一切法相聯繫。

綜觀本經,「自然智」之術語形式有「自然智」「自然之智」「自然慧」三種,語境涵蓋菩薩所求之果、所入之智、所住之理、所供養之佛德、所成就之覺境。本經未將自然智限定於某一固定階位,而是貫穿於發心、修行、受決、成佛之全程。

大佛頂如來密因修證了義諸菩薩萬行首楞嚴經T0945 · 密教部

本經未以「自然智」為獨立術語,而是以「自然」為所破對象,將其自然觀置於因緣、自然二邊俱遣的論辯脈絡中加以遮遣。「自然」在本經中主要指外道所執之見——阿難引「先梵志娑毘迦羅所談冥諦」及「投灰等諸外道種說有真我遍滿十方」,並述佛昔於楞伽山所說「彼外道等常說自然,我說因緣非彼境界」,以自然為外道計執。阿難聞覺緣「湛然常住,性非生滅」後,疑此覺性「似非因緣與彼自然」,佛即追問:若必自然,須「甄明有自然體」——此妙明見以明為自、以暗為自、以空為自、以塞為自?若明為自應不見暗,若空為自應不見塞,則見性於明時斷滅,云何見明?阿難由是悟「必此妙見性非自然」,轉執因緣,佛復以「因明有見」「緣空有見」層層破之,終結以「精覺妙明,非因、非緣,亦非自然、非不自然;無非、不非,無是、非是;離一切相,即一切法」,不可「以諸世間戲論名相而得分別」。佛復破世間四緣(因空、因明、因心、因眼)之說,明言「我說世間諸因緣相,非第一義」,更示「見見之時,見非是見,見猶離見,見不能及」,結云「云何復說因緣自然及和合相」,斥聲聞「狹劣無識,不能通達清淨實相」。至演若達多喻,佛以迷頭狂走之事總結因緣、自然之辯:頭本自然,何因緣故怖頭狂走?本狂自然,未狂之際狂何所潛?「若悟本頭,識知狂走,因緣、自然俱為戲論」;菩提乃「三緣斷故即菩提心」之無功用道,「無生滅者名為自然」亦但生滅邊事,「本然非然,和合非合,合、然俱離,離、合俱非,此句方名無戲論法」。五陰章中,佛明言「妄元無因,於妄想中立因緣性;迷因緣者,稱為自然。彼虛空性猶實幻生,因緣、自然,皆是眾生妄心計度」,五陰本因同是妄想,自然不過是迷者於無因之妄上更起計度。全經論辯格式為層層遞破:先破自然、次破因緣、終則雙遣。用語上,本經以「自然」對舉外道之說,以「本然」為與「和合」對稱之概念(「非和合者稱本然性」),以「自然體」追問自體,以「戲論」總判因緣自然二執;始終未將「自然」與「智」連用為一正面術語,反明確以自然為須超越之妄計,此與以「自然智」為無師自證之正面表詮者語境迥異。

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