般若心經 義疏通講

A Sūtra "Condensed Down to Nothing but Its Heart"

The Heart Sūtra (Prajñā-pāramitā-hṛdaya-sūtra) is only two hundred sixty characters, and it is the most recited of all sūtras in the Chinese tradition. It is this short because it was condensed to begin with — the ancient masters say that the Mahā-prajñāpāramitā-sūtra is vast in its many fascicles, and, fearing that readers might lose heart at the size of it, the most solid and most essential purport within it was drawn out and made into this separate sūtra. The word 「心」 ("heart") means exactly this: not the "heart" of psychology, but the heart as core, as pivotal essence. So to read the Heart Sūtra is to read the very heart of the whole of Prajñā.

And precisely because it is a distillation of essentials, it has neither the "opening section" (序分, 「如是我聞…」, "Thus have I heard…") nor the "circulation section" (流通分, 「信受奉行…」, "received it in faith and put it into practice…") that ordinary sūtras carry. The three houses of ancient masters — Kuiji, Woncheuk, Fazang — all judge it so. It opens its mouth straight onto the main matter, clean and direct.

One Path, from "the Cognition that Observes" to "the Fruit Attained"

Do not be misled by its brevity: it is a complete path. Following Woncheuk's textual division, the whole sūtra falls into three divisions and nine sections:

First, it establishes the cognition that observes (the first division). Avalokiteśvara the bodhisattva (who is observing) → coursing in the deep prajñā (what one observes with: the deep cognition that is nondiscriminating, nirvikalpa) → seeing the five aggregates as all empty (what is seen: the emptiness of body and mind) → crossing beyond all suffering (the result of the observing: deliverance from suffering). Four lines, sweeping in one breath through how a practitioner takes up prajñā, illumines and breaks through the grasping at the substantial, and escapes the sea of suffering.

Next, it speaks of the object observed (the second division). Then it slows down and tells in detail what that "emptiness" actually is: 「色不異空」, 「色即是空」 ("form is not different from emptiness," "form itself is emptiness" — emptiness does not cancel form away) → 「是諸法空相，不生不滅」 ("these dharmas have the mark of emptiness, neither arising nor ceasing" — even arising and ceasing, defilement and purity, find no footing on it) → a string of "no's" that negate, one gate at a time, the five aggregates, the twelve sense-fields, the eighteen elements, the twelvefold dependent origination, the Four Truths, and at last even "cognition" and "attainment."

Finally, it discloses the fruit attained (the third division). At the last it draws everything to a close: 「以無所得故」 ("because nothing is attained" — releasing the very last hand's grip) → 「心無罣礙」, 「究竟涅槃」 ("the heart with no snag and no hindrance," "final nirvāṇa" — the bodhisattva's fruit) → the buddhas of all three times realizing supreme awakening (the buddhas' fruit) → a single mantra (compressing the whole sūtra into one utterance and sending you off down the road).

To let go down to nothing-being-gained, and yet what is gained is great sovereign freedom and a thoroughgoing awakening — this is the very thing the Heart Sūtra means to tell you.

Why Read Through the Mirror of "Yogācāra"

This book's exposition layer reads the Heart Sūtra through the mirror of Yogācāra. This needs explaining, lest it be misunderstood.

Prajñā speaks of "emptiness"; Yogācāra speaks of "the three natures (trisvabhāva), the three non-natures (niḥsvabhāvatā), the transformation of the basis (āśraya-parāvṛtti)" — seemingly two houses, yet what they illumine is one and the same reality. The Heart Sūtra's single line 「色即是空」 ("form itself is emptiness"), put into the words of Yogācāra, becomes "negate the wholly-imagined nature (parikalpita), keep the other-dependent (paratantra) and the perfectly-accomplished (pariniṣpanna)" — what is emptied is the "substantial existence" you yourself force onto things, not a wiping away of the world that arises through conditions. Read this way, "emptiness" cannot be misheard as annihilation; it is rather a coolness in which the grasping at the substantial is seen through while the world stays vividly alive.

And this mirror was ground by the ancient masters, not contrived by people of today. The two finest Heart Sūtra commentaries in the Chinese tradition — Kuiji's 《幽贊》 and Woncheuk's 《贊》 — are themselves readings through Yogācāra (Woncheuk even cites the two houses of Dharmapāla and Bhāviveka discussing emptiness and existence). So in reading the Heart Sūtra through Yogācāra, there is, underfoot, the ground of the ancient masters' treatise-roots.

But one line must be kept in mind: the mirror is not the sūtra. Yogācāra is one mirror in which to read the Heart Sūtra, not the source of the Heart Sūtra; Prajñā is the sūtra, Yogācāra is the mirror. We use the mirror to illumine the sūtra so as to see the sūtra more clearly — not to let the mirror usurp the sūtra, and not to rewrite the Heart Sūtra into a Yogācāra treatise. Once the seeing is done, the mirror can be set down.

How to Read This Book: Five Layers

For each segment this book provides five layers, from shallow to deep, each to take what it needs:

• Source (原典): Xuanzang's word-for-word sūtra text, with not a character altered.
• Vernacular (白話): the classical Chinese said in today's language, faithful and readable, adding no doctrine.
• Exposition (義疏): through the mirror of Yogācāra, led by one live question, bringing this segment to life — this is for those willing to go deep.
• Apparatus (考據): collation across six Chinese translations, word-for-word citation of the ancient masters, terminology and Sanskrit sound — this is for scholars and collators.
• Essence (心要): one landing-piece of short prose, a held suspense plus one question, for those who only want a first taste.

You may read the vernacular alone, or read all the way through to the apparatus; you may enter through the essence, or take up the source text and chew on it carefully against the exposition. The road has its broad stretches and its narrow ones, the gates their depths and their shallows — as you please.

So push open this gate, beginning with the three words "Avalokiteśvara."

An opening easy to slide past

The whole Heart Sūtra is about "emptiness" (空) — form is empty, the five aggregates are empty, no cognition and no attainment (無智無得). Yet its very first line does not speak of emptiness; it speaks of a name: Avalokiteśvara Bodhisattva (觀自在菩薩).

Most readers take this line as a courteous opening and glide right past it. The ancient masters, in fact, weighed it heavily. Woncheuk says this is the very first matter within the "first division" (初分), called marking the person who can observe (標能觀人) — first one sets up "this person who can observe, this cognition that can observe," and only then do the later "coursing deeply, illumining and seeing, all empty" (行深、照見、皆空) have anything to rest upon. Put another way: there must first be a mirror that illumines before one can speak of what is seen within the mirror. The Heart Sūtra is not propounding some doctrine of "emptiness" out of thin air; there is one who has personally realized it, stepping forward to demonstrate how he observes.

This name "觀自在" is itself a teaching

The name was not given at random. Kuiji unpacks it for us: 「『觀』者，照義」("'observe' (觀) carries the sense of illumining") — to observe is to illumine, the very wisdom that comprehends emptiness and existence; 「『自在』者，縱任義」("'sovereign' (自在) carries the sense of free disposal") — sovereign means that this wisdom, in operation, is free, unobstructed, effortless. Woncheuk puts it still more aptly: 「內證二空，外觀三業，不依功用，任運自在」("inwardly realizing the two emptinesses, outwardly observing the three actions, not relying on effortful function, sovereign in spontaneous operation"). Inwardly, one personally realizes the emptiness of self and the emptiness of dharmas — the two emptinesses (二空); outwardly, one illumines the three actions of body, speech, and mind (三業); and this illumining requires no forcing, no contrivance — it is utterly natural. This alone is what "sovereign" means.

So the three characters 「觀自在」 amount to settling, from the outset, this sūtra's cognition that observes (能觀): it is a nondiscriminating cognition (無分別智) that illumines without clinging, and so is freely sovereign. The later "coursing in the deep prajñā" (行深般若) says this cognition is in operation; "illumined and saw the five aggregates are all empty" (照見五蘊皆空) says what this cognition illumined. The wellspring of all of it lies within this name.

This "observing," as Yogācāra sees it

Hold up the mirror of Yogācāra, and this "cognition that observes" grows clearer still. After expounding the title, Kuiji deliberately marks out the fivefold Consciousness-Only contemplation (五重唯識觀) as the framework for the whole sūtra's gate of contemplation: 「聖教所說唯識，雖無量種，不過五重。一、遣虛存實——觀遍計所執唯虛妄起，都無體用，應正遣除」("The Consciousness-Only the sacred teaching sets forth, though of measureless kinds, does not exceed five layers. First, dispelling the unreal and retaining the real — contemplating that the wholly-imagined nature (parikalpita) arises only as false fabrication, wholly without substance or function, and should be rightly dispelled").

This first layer, "dispelling the unreal and retaining the real" (遣虛存實), is precisely the observer's point of entry: dispel that layer of false fabrication your mind has set up (the wholly-imagined nature, parikalpita), and retain the layer that arises through conditions and is not nonexistent (the other-dependent and the perfectly-accomplished, paratantra and pariniṣpanna). From "illumined and saw the five aggregates are all empty" to "no cognition and no attainment" (無智亦無得), the whole Heart Sūtra dispels, layer upon layer, only the "unreal," and retains, throughout, "real-marks" (實相) — and the one who wields this cognition that dispels-the-unreal-and-retains-the-real, and wields it with sovereign ease, is Avalokiteśvara (觀自在). When the mirror illumines this far, the name and the whole sūtra link up.

The mirror of Yogācāra: one and the same matter, the name and the meaning

It is not that the bodhisattva Avalokiteśvara was conjured up out of Yogācāra teaching, nor that this name can only be understood by leaning on Yogācāra. It is one and the same cognition — "illumining without discriminating, illumining yet not grasping" (無分別而照、照而不執): the Heart Sūtra marks it with a name, 「觀自在」 (Avalokiteśvara); Yogācāra states it as "nondiscriminating cognition" (無分別智) and the "fivefold Consciousness-Only contemplation" (五重唯識觀). One is a personified demonstration, the other a technical analysis — both pointing to the very same cognition that observes. The mirror is not the sūtra (鏡非經).

So this sūtra's opening is not vague at all: it first calls forth a bodhisattva who has cultivated the contemplation of emptiness to the point of sovereign ease — which is as much as to tell you that emptiness is not a doctrine to be memorized by rote, but a contemplation that can be cultivated, can be realized, and once accomplished brings sovereign ease. Now watch how he courses, how he illumines.

Form: this layer reads the passage through the mirror of Yogācāra (Consciousness-Only) — taking up "nondiscriminating cognition" (nirvikalpa-jñāna), "the two emptinesses," and "the transformation of the basis" (āśraya-parāvṛtti) to hold up against the Heart Sūtra's "行深般若波羅蜜多時" (at the time of coursing in the deep prajñā-pāramitā). The mirror is not the sūtra; it is the ancient masters (Kuiji's Profound Praise 《幽贊》, Woncheuk's Praise 《贊》) who themselves read the Heart Sūtra through Yogācāra.

One word worth pressing on: deep

「行深般若波羅蜜多」 — here there is a single word, 「深」 (deep), that is easy to read straight past. Yet it is the hinge: if there is a "deep" prajñā, then there is also a "shallow" prajñā. So where does the difference between deep and shallow lie?

In our ordinary reading of scripture and listening to the Dharma, we come to understand the principle that "all dharmas are empty" 諸法皆空 — and this too is prajñā. But it is a prajñā arrived at through hearing and reflection, worked out by the discriminating mind; it is the "shallow" one. By marking a 「深」 (deep) here, the Heart Sūtra means to separate this prajñā of shallow understanding from the prajñā that the bodhisattva realizes directly, on the spot.

Deep — deep in being "without discrimination"

Woncheuk pierces it through in a single line: 「無分別智內證二空，離諸分別，無能、所行以為行相，故名行深」 — "nondiscriminating cognition inwardly realizes the two emptinesses; parted from all discrimination, it has neither a grasper nor a grasped object of coursing as its mode of activity, and so it is called coursing deep."

Taken apart:

• Nondiscriminating cognition (nirvikalpa-jñāna) — not a cognition that reasons and thinks by way of thoughts, but a cognition that has left behind the opposition of grasper and grasped and illumines directly. The moment you think "this is empty," that is still discrimination; true coursing-deep does not even have the discrimination "I am contemplating emptiness" — it illumines without discriminating.
• Inwardly realizing the two emptinesses (二空) — what it realizes is the emptiness of self (there is no real self) and the emptiness of dharmas (there is no real dharma). Not a granting of the point in principle, but a realizing-into it in person.
• Free of the grasper-and-grasped mode of activity — ordinary "contemplation" always has a contemplating self and a contemplated object, the two set over against each other; in the time of coursing deep, grasper and grasped are both extinguished, and so it is said to have "neither a grasper nor a grasped object of coursing as its mode of activity."

This is what "deep" means: it is not in how much you understand, but in how deep you have parted from discrimination. Shallow prajñā stops at "I've thought it through"; deep prajñā advances to "grasper and grasped both stilled, the two emptinesses present before one." Avalokiteśvara is sovereign precisely because what he courses in is this nondiscriminating, deep prajñā.

「波羅蜜多」 (pāramitā): where this wisdom is meant to carry you

To say "deep" is not yet enough; the scripture says 「波羅蜜多」 right alongside it. Woncheuk explains it concretely: 「波羅，名彼岸；蜜多，名到」 — "pāra, the far shore; mitā, reaching" — wisdom reaching the far shore; and the reason it can reach is 「因智斷障至涅槃城」 — "because by this cognition one severs the obstructions and reaches the city of nirvāṇa."

This joins straight up with the Yogācāra transformation of the basis (āśraya-parāvṛtti): this nondiscriminating cognition that is prajñā is no state to be savored for its own sake — it has a real function: it severs the obstructions. Which obstructions? The obstruction of the afflictions (煩惱障) and the obstruction to the knowable (所知障). The obstructions are severed portion by portion, the gross-heaviness (dauṣṭhulya) is cast off layer by layer, and a person crosses, step by step, from the near shore of birth-and-death toward the far shore of nirvāṇa. So 「波羅蜜多」 is no modifier; it states that this wisdom is in the very act of ferrying across the river. 「行深」 is the wisdom in use; 「波羅蜜多」 is the destination of that use.

The mirror of Yogācāra: one and the same wisdom, in the language of sūtra and the language of treatise

It is not that the Heart Sūtra's prajñā has to be re-dressed as Yogācāra's nondiscriminating cognition before it counts; nor that Yogācāra copied it from the Heart Sūtra. It is one and the same wisdom — the wisdom that "parts from discrimination, realizes the two emptinesses, severs the obstructions, and reaches the far shore" — which the Heart Sūtra marks with "行深般若波羅蜜多" (coursing in the deep prajñā-pāramitā) and which Yogācāra states with "nondiscriminating cognition," "severing the two obstructions," and "the transformation of the basis." The mirror is not the sūtra.

Read this one line through, and the next line, "seeing the five aggregates as empty" 照見五蘊皆空, no longer comes as a jolt: it is precisely because what he courses in is this prajñā, deep enough that grasper and grasped are both extinguished, that this one illumining can reach to the very bottom of the five aggregates — empty.

A line all too easily mistaken for despair

"照見五蘊皆空 — seeing the five aggregates as all empty" is the eye of the whole sūtra; every "無 / no" that follows grows out of this single line. But it is also the line most easily read crooked: the five aggregates are this entire body-and-mind of mine, so to call them "all empty" — is that telling me to see myself as a bout of nothingness, as nothing at all?

Many people fear "空 (emptiness)" right here: they take seeing-emptiness to mean negating vivid, living existence, scrubbing it to a field of dead ash. It is exactly at this gate that the ancient masters mean to have the word "空" heard rightly.

What is empty is not the five aggregates, but your misidentification of them

Kuiji sets the keynote in one sentence: 「此中『空』言，即三無性」 ("the word '空' here is just the three non-natures"). This "空" does not say the five aggregates are not there; it says the five aggregates "have no self-nature (無自性)." Woncheuk puts it more finely, viewing the five aggregates on three layers (the three natures):

• The wholly-imagined five aggregates (遍計所執五蘊): in your mind you fix that "there is a solid me, a solid body-and-mind" — this layer is 情有理無, present to feeling but absent in fact; it was never there at all.
• The other-dependent five aggregates (依他起五蘊): form, feeling, perception, formations, consciousness in truth arise from the converging of manifold conditions, appearing and perishing moment by moment — this layer is 因緣假有, a provisional existence through conditions, plainly at work.
• The perfectly-accomplished five aggregates (圓成實五蘊): their true ground of being self-natureless — this layer is 真實理有, truly and really there in principle.

Which layer does "皆空" empty out? Woncheuk cuts clean: 「依護法宗，三種蘊中但遣所執以辨空性」 — by Dharmapāla's school, among the three kinds of aggregate it negates only the grasped-at (the wholly-imagined) in order to bring out emptiness. What is emptied is the layer of "a really-existent me, a really-existent dharma" (the wholly-imagined, parikalpita) that you forcibly impose — not the conditionally-arising other-dependent (paratantra), nor its true ground (the perfectly-accomplished, pariniṣpanna), which are not wiped out along with it.

So "照見五蘊皆空" is not seeing yourself as nothingness. Quite the reverse: feeling still feels, thoughts still rise and fall, body-and-mind goes on functioning as usual — only the "solid mind, the graspable me" is seen through as never having been there. What is empty is the misidentification, not the life.

Why the Buddha "declares emptiness as a blanket"

Someone may ask: if the other-dependent and the perfectly-accomplished are not empty, why does the Buddha cover it all over with one "皆空," instead of spelling out the distinction? Kuiji answers well — this is hidden intent (密意): 「對破有執總密說空，非後二性都無名空，說一切空是佛密意」 ("to counter and break the grasping at existence He declares emptiness as a blanket, secretly; it is not that the latter two natures are utterly non-existent and so called empty — declaring all empty is the Buddha's hidden intent").

That is: beings are sick with "grasping at existence" — seizing everything as solid. To treat this disease of grasping head-on, the Buddha simply declares one blanket "空," to first pry open the hand that grips and will not release. It is not that the other-dependent and the perfectly-accomplished are really annihilated too; it is the Buddha's skillful means — to use a single "emptiness" medicine first, to break your grasping at the real. A reader must be able to hear this layer of hidden intent, so as not to mishear "皆空" as annihilation.

(A transmitted recension of the ancient masters gives this line instead as 「照見五蘊等皆空」 — "seeing the five aggregates, etc., as all empty." After collating the Sanskrit witness Woncheuk states 「有『等』言故」 — "because there is the word 'etc.'" That single "等" draws the "all empty" of the later aggregates, sense-fields, elements, dependent origination, and the truths (蘊·處·界·緣·諦) all into itself, showing yet more clearly that this line is the master-thread of the whole sūtra.)

The mirror of Yogācāra: one same emptiness, in the sūtra's words and the treatise's

It is not that the Heart Sūtra's "空" must be swapped for Yogācāra's "three non-natures" to be correct, nor that Yogācāra borrowed it from the Heart Sūtra. It is one and the same matter — "negating the grasped-at, preserving the other-dependent and the perfectly-accomplished (遣其所執、存其依圓)": the Heart Sūtra states it as a blanket in the one phrase "五蘊皆空," and Yogācāra states it in detail through "the three natures, the three non-natures, negating only the wholly-imagined." One gives you the settled view; the other gives you the measure.

Polish this mirror and look again at "照見五蘊皆空," and it turns from a line that chills a person into a line that unbinds one: you need not negate this living, breathing body-and-mind — you need only see through the illusion of a "real self" weighing down upon it, and that very moment is coolness and ease. What this one gaze illumines is precisely the place where Avalokiteśvara takes hold to cross beyond all suffering.

Is a Step Missing Between Insight and Freedom?

「照見五蘊皆空，度一切苦厄」 — "seeing the five aggregates as empty, he crosses beyond all suffering and distress" — these two lines are joined so tightly that they raise a doubt: between seeing-through and freedom from suffering, a step seems to have been skipped. On what grounds does "illumining emptiness" amount to "crossing beyond all suffering"? Once the principle is understood in thought, does real suffering — illness, age, parting, affliction — really vanish on the strength of a single "I get it"?

It is a good question to raise. The ancient masters' answer is not "once you get it, the suffering is gone," but a pointing to where the root of suffering lies.

The Root of Suffering Is a Layer of Wrapping

Yogācāra looks at "suffering" and sees that it does not come out of nowhere; it has a basis to rest on — and that basis is called 麁重 (the gross-heaviness, dauṣṭhulya): a single heavy knot of bondage that the seeds of the afflictive obstruction and the cognitive obstruction have tied at the floor of your mind. You undergo suffering because this layer of bondage is still there; so long as you still grasp at "there being a real self," this knot of gross-heaviness cannot be undone, and suffering has somewhere to lodge.

This is why Kuiji says that 度一切苦厄 ("crossing beyond all suffering") speaks of 轉依 (the transformation of the basis): 「度苦厄，捨麁重依得無麁重」— "to cross beyond suffering and distress is to cast off the gross-heaviness-basis and gain the absence of gross-heaviness." Seeing the five aggregates as empty negates the grasping at "a real self and real dharmas," and that knot of a gross-heaviness-basis is thereby cast off; casting off the gross-heaviness-basis and gaining in its place a purified basis — this is what is called the transformation of the basis. Suffering is not extinguished by some outside force; rather the very layer of wrapping on which it stood loosens and falls away.

A Moth Breaking Out of Its Cocoon

Kuiji gives a strikingly vivid simile: 「既照性空，離諸分別，如蛾出繭，永離纏裹，便度苦厄」— "having illumined the emptiness of nature and departed from all discrimination, like a moth emerging from its cocoon, forever freed from the binding wrappings, one thereupon crosses beyond suffering and distress."

The moth inside the cocoon is bound tightly by a layer of silk. It escapes not by waiting for someone to cut the cocoon open from outside, but by departing that wrapping bit by bit, of itself, and breaking out.

Human suffering is just like this. That grasping at "a real self" is the cocoon, is the wrapping. Seeing the five aggregates as empty amounts to loosening this grasping from within — suffering is not taken away by anyone; you yourself come out of the bondage. So the word 度 ("cross"), Kuiji glosses as 「越也，脫也」— "to go over, to slip free": it is going over, it is slipping free, it is walking out by oneself, not being carried away. And this fills in the step that seemed to have been skipped between "seeing-through" and "freedom from suffering": seeing-through negates grasping; with grasping negated, the gross-heaviness-basis is cast off; with the gross-heaviness cast off, the wrapping departs; with the wrapping departed, suffering and distress are crossed beyond. Link locks into link, and nothing is skipped.

The Mirror of Yogācāra: One Road, the Sūtra's Word and the Treatise's Word

It is not that the Heart Sūtra's "crossing of suffering" needs Yogācāra's "transformation of the basis" in order to hold; nor that Yogācāra copied it from the Heart Sūtra. It is one and the same matter — "negating grasping, casting off the gross-heaviness, coming out of the wrapping" — which the Heart Sūtra carries in the single line 度一切苦厄 ("crossing beyond all suffering"), and which Yogācāra, with 轉依 ("transformation of the basis") and 捨二麁重 ("casting off the two gross-heavinesses"), spells out in detail as the mechanism in between.

Here the opening section on the "cognition that observes" comes full circle: Avalokiteśvara (the one who observes), coursing in the deep prajñā (the cognition that observes), seeing the five aggregates as empty (the emptiness that the cognition illumines), and crossing beyond all suffering (the fruit of illumining emptiness) — a single bodhisattva, holding up the deep nondiscriminating cognition, illumines and shatters the grasping at the real, and emerges from his own cocoon. This is no piece of abstract talk; it is a road that goes through, and that, walked to its end, brings freedom from suffering.

The place where an ordinary listener gets stuck

The four words「色即是空」("form is itself emptiness") are something almost everyone can recite. But take them at face value and you stall at once: the table is plainly right here — knock it and it sounds, bump it and it hurts — how can it be said to "just be empty"? Must we wait until it breaks, rots, crumbles to ash before it counts as empty?

The ancients stalled here too. Kuiji put the difficulty plainly: there is a kind of person who「執要色無位方始有空」— who clings to the idea that "only once this form is gone, destroyed, is there any 'emptiness.'" But the trouble is, such an emptiness is one bought by demolishing the thing; in that case, why would the Buddha say「色即是空」("form is itself emptiness") rather than simply「色滅了是空」("once form perishes, it is empty")?

Everything turns on that word「即」("is itself / right now"). The Heart Sūtra is not saying that form perishes and becomes emptiness; it is saying that form, right now, just as it is, is emptiness. To read that「即」through, one must first hear「空」("emptiness") rightly — and this is exactly where the mirror of Yogācāra throws light.

What is empty is not form itself, but the layer of "real existence" you add onto form

Yogācāra looks at any "form" in three layers (this is the three natures):

• The layer where your mind has fixed it as "a solid, independent, self-standing thing out there" — this is called the wholly-imagined nature (遍計所執, parikalpita). This layer is something your discriminating mind has fastened on; it never existed in the first place.
• It is in fact an image conjured up by the meeting of many conditions, shifting moment to moment, vividly visible and speakable — this layer is called the other-dependent nature (依他起, paratantra).
• And its true ground — that conjured, condition-met arising utterly without own-nature — this layer is called the perfectly-accomplished nature (圓成實, pariniṣpanna).

When the Heart Sūtra says「色即是空」, which layer is emptied? Woncheuk answers without hedging:「遍計所執本來無故說之為空」— "the wholly-imagined is, from the outset, nonexistent, and therefore is called empty." What is emptied is the layer of "real existence" you forcibly fastened on, not the present arising form together with its own-nature-less true ground, both wiped into nothing. So he marks it pointedly: following Dharmapāla's school,「三種蘊中但遣所執以辨空性」— "within the three [-natured] aggregates, only the grasped-at is negated in order to discern the nature of emptiness." Only the wholly-imagined layer is removed. Form is not cancelled; what is cancelled is your misperception of it.

With this, the「即」reads through: there is no need to wait for form to perish, because the layer of "real existence" that was to be emptied never existed at all; from the very beginning it was empty. Form is, right now, empty — because it never truly had the kind of "real existence" you supposed.

A simile: an eye seeing flowers through cataract

Fearing one might still not grasp it, Kuiji gives a superb image — the sky-flower (翳花):

如翳見花，自性非有，豈要花滅，彼始成空？

A person whose eye is afflicted with cataract sees flowers in empty space (the sky-flower seen by a diseased eye). Must those flowers wait until they "wither" before they count as empty? No need — their own-being is from the outset nonexistent; they are right now empty flowers, with no real flower there to wither at all.

The table before you is just the same. The "solid, self-supporting table" you take it to be is like the flower in the cataract-stricken eye — its layer of "real existence" was never there to begin with, and need not wait for the table to break: it is, in its very substance, empty. One who sees through this does not wait for the thing to be destroyed before seeing emptiness; right here, upon this present arising form, one sees that it was never substantial. This is「色即是空」.

In reverse: emptiness too is not apart from form, emptiness too is itself form

The Heart Sūtra does not stop at「色即是空」. It speaks four phrases in a row:「色不異空、空不異色、色即是空、空即是色」("form is not different from emptiness, emptiness is not different from form, form is itself emptiness, emptiness is itself form"). Why turn back and add「空即是色」("emptiness is itself form")?

Because there is the danger of falling out of one pit into another: having heard that form is empty, one supposes one must go off and find some "clean emptiness lying outside form" to dwell in. Kuiji breaks this too: some「執世俗所取色外別有真空」— "cling to a true emptiness lying apart from the conventionally grasped form" — supposing true emptiness to be a thing standing elsewhere, away from shape and form. It is not. That true emptiness (the perfectly-accomplished nature) is not outside form; it is disclosed right upon this present, other-dependent form, right where it has no own-nature. So「空不異色」("emptiness is not different from form"),「空即是色」("emptiness is itself form"): true emptiness never departs from this living, present form.

Woncheuk, citing the Madhyāntavibhāga (辯中邊論), states this layer most fully: form has the form of the three natures, emptiness has the substance of the three natures, and form and emptiness are mutually identical, one to one, upon the three natures — which is why「色即是空、空即是色」runs through in both directions, not two things forced into an equation.

Not only "form" — feeling, perception, formations, consciousness, the five aggregates alike

The sūtra next adds「受、想、行、識，亦復如是」("feeling, perception, formations, and consciousness are likewise so"), fitting this same key at once to all five aggregates. Your feelings, your takings-up, the constructings of your mind, your manifold discernings — not one of them falls outside this principle: the layer of "real existence" you add onto them is, from the outset, empty; and their present functioning does not thereby vanish.

This point matters most, and is most consoling: to see the five aggregates as empty is not to teach you to crush feeling and thought into dead stillness. Feeling still feels as before, thoughts still rise and fall, only one no longer grasps at them as so many solid, holdable things. What is empty is the "grasping," not the "aliveness."

The mirror of Yogācāra: one and the same reality, in the language of sūtra and the language of treatise

Let it be stated plainly: it is not that Yogācāra's learning of the three natures and two emptinesses flows out of the Heart Sūtra, nor that the Heart Sūtra needs Yogācāra to stand. It is one and the same reality of "negating what is grasped, preserving the other-dependent and perfectly-accomplished (遣其所執、存其依圓)" — which the Heart Sūtra states in the language of Prajñā as「色不異空、色即是空」, and which the Madhyāntavibhāga and the Triṃśikā state in the technical language of Yogācāra as「遍計所執自性無所有、圓成於依他遠離前性」("the wholly-imagined nature has nothing whatever of own-being; the perfectly-accomplished is, in the other-dependent, free of the prior nature"). One is the language of the sūtra, one the language of the treatise; what they disclose is one and the same matter.

Take this mirror and look back at that everyone-can-recite line,「色即是空」, and it is no longer an empty catchphrase: it says that this vivid world before you need not be destroyed by a hair's breadth — only see through the layer of "real existence" you forcibly added, and in its very substance it is the cool relief of emptiness; form still stands, while grasping is negated. This is where Prajñā's crossing-beyond-suffering takes hold.

A question bound to rise

The last passage said "色即是空、五蘊皆空" ("form is itself emptiness; the five aggregates are all empty"), and this one follows straight on by sketching a face for that "emptiness": these dharmas are marked by emptiness — neither arising nor ceasing, neither defiled nor pure, neither increasing nor decreasing.

But think it over and a doubt arises. The things right before my eyes plainly do arise and cease — flowers bloom and fade; people fall ill and recover; money grows and dwindles. How is it that the moment one steps into the "mark of emptiness," all of this is met with a "neither"? Is the mark of emptiness asking us to look straight at what is there and call it absent — to deny arising, ceasing, defilement, purity, the things laid out plain before us?

To get through this pass, one has to be clear about on which layer the "neither" is being said.

Not that there is no arising-and-ceasing in the events themselves — it is the "real arising-and-ceasing" that was never there

Woncheuk points out that this passage is "revealing the mark of emptiness through six kinds of meaning (約六種義以顯空相)" — taking six facets (arising, ceasing, defilement, purity, increase, decrease) to reveal the true face of emptiness. Kuiji says the crux outright: what these six "neithers" negate is the wholly-imagined nature, and the layer of "self-arisen dharmas" upon the other-dependent nature — their reality.

What is the "reality" of "self-arisen dharmas"? It is the conviction set down in your mind: that there is some solidly real thing which arises of itself and ceases of itself. Kuiji says this layer is "by its very nature empty and non-existent (本性空無)" — it was never there to begin with. So "neither arising nor ceasing" is not a denial of flowers blooming and fading (that is dependent arising, vivid and present); it is a denial of "there being a real entity standing there, truly arising and truly ceasing."

He puts his finger on one crucial line: the mark of emptiness's "neither arising-nor-ceasing and so on" means "皆無如彼二乘等執生等位別" ("none have the fixed positions of arising and so forth that the two vehicles and others grasp at"). That is to say: the two vehicles take arising, ceasing, defilement, purity as so many fixed, really-different "positions" — this is real ceasing, that is real arising; this is the position of defilement, that the position of purity. What the mark of emptiness clears away is precisely this kind of "really-different position." The events of arising and ceasing still appear upon the other-dependent nature, but that grasping at "real slots and real positions" is emptied out.

Three pairs of "neither," clearing away three entanglements

Take the six marks as three pairs, and they come closer to the human heart:

• Neither arising nor ceasing — clears away the entanglement over existence: the supposing that there is a thing solidly real that comes into being and then solidly real that passes away.
• Neither defiled nor pure — clears away the entanglement over value: the supposing that there is a thing intrinsically and really filthy, or really clean. (Here the 《大般若》 [Larger Prajñā Sūtra] cited by the ancient masters reads 「不染不淨」 "neither tainted nor pure," making it the plainer that what is cleared away is the grasping at taint-versus-purity.)
• Neither increasing nor decreasing — clears away the entanglement over quantity: the supposing that the true face will really gain a measure through your practice, or really lose a measure through your deeds.

With the three pairs cleared, one message stands plain: the rulers you bring to measure the world — is-it-there-or-not, is-it-good-or-bad, is-it-much-or-little — find nothing to rest on before the true face of emptiness. It is not that the world has vanished; it is that your whole measuring with its "real graduations" has fallen through.

Through the mirror of Yogācāra: one mark of emptiness, in the language of sūtra and of treatise

It is not that the Heart Sūtra's "six meanings of the mark of emptiness" need Yogācāra to be made coherent, nor that Yogācāra borrowed them from the Heart Sūtra. It is one and the same matter — "clearing away the wholly-imagined real positions and revealing the true face of the dependent-and-perfected (遣遍計實位、顯依圓真相)" — which the Heart Sūtra reveals with six "neithers," and which Yogācāra states as "the fixed positions of the wholly-imagined nature are by their very nature empty and non-existent (遍計所執位別本性空無)."

Read these six "neithers" through, and the long string of "無 / no" in the next passage (no form, no feeling-perception-formations-consciousness, no eye-ear-nose-tongue-body-mind…) has its governing thread: that string is not a wholesale wiping-out of body, mind, and world; it is the working-out of the principle of these six marks, gate by gate, thoroughly, upon the five aggregates, the twelve sense-fields, the eighteen elements, the twelvefold dependent origination, and the four truths.

The passage most likely to unsettle the heart

「無色，無受想行識；無眼耳鼻舌身意；無眼界乃至無意識界；無無明亦無無明盡…無苦集滅道；無智亦無得。」

Reading this far, many people feel their heart sink. That the five aggregates were called empty, fine — but how is it that the twelve sense-fields, the eighteen elements, the twelve links of dependent origination, the four noble truths — these dharmas the Buddha spoke with his own mouth — are now negated, one after another? And at the very end, even "cognition" and "attainment," even the wisdom one can cultivate and the fruit one realizes, are said to be "absent." Is this not tearing the whole of Buddhism to pieces?

It is precisely here that the ancient masters mean to have us hear the word "無" rightly — for otherwise this passage would frighten people off rather than ferry them across.

What is negated is not these dharmas, but your grasping them as "real existence"

Woncheuk (圓測) puts it plainly: this passage is "依前空相遣六門法" — taking the preceding principle of "the emptiness-mark of all dharmas" and applying it gate by gate, divided into six gates: the five aggregates, the twelve sense-fields, the eighteen elements, the twelve links of dependent origination, the four truths, and cognition-and-attainment.

And what is it that is "negated" (遣)? Carrying on from the preceding part's principle: what is negated is the layer of the wholly-imagined nature (遍計所執). The Buddha spoke of the aggregates, sense-fields, elements, dependent origination, and truths as skillful designations on the other-dependent nature (依他起), set up to help you see body-and-mind clearly, to see arising and ceasing clearly. But sentient beings, hearing this, again seize each one of them as a "really existent thing" — a really existent aggregate, a really existent element, a really existent truth of suffering — and, once seized, these become a fresh bondage. So the Heart Sūtra goes "無" all the way down: what is negated is the "real existence" you grasp upon these dharmas, not the demolishing of the Buddha's skillful gateways. The dharmas remain in use; the grasping is negated.

To put it by a plain analogy: the aggregates, sense-fields, elements, and truths are like a raft for crossing a river. The raft is to be used well; but you cannot, having reached the far shore, hoist the raft onto your head and insist "this raft is my eternal, really existent possession." In "無苦集滅道," what is negated is the grasping that hauls the raft up onto the shore — not a prohibition against your boarding the raft to cross the river.

The eye of the whole passage: letting go even of "the cognition that cultivates and the fruit attained"

This string of "無" comes to rest at last on its deepest line: 「無智亦無得。」

This is the eye of the whole passage. Kuiji (窺基) glosses it exactly: 「能證道名智，所證境名得」 — "智" is the cognition that realizes, "得" is the attainment that is realized. Why must even these two be "negated"? Because so long as you still set up in your heart "I have a cognition that cultivates" facing "a fruit that is attained," you are still fallen into the duality of the two graspings — grasper and grasped (能取、所取) — there is still a self doing the grasping. Kuiji says: 「破實能取故說無智，破實所取復言無得」 — "because it breaks the real grasper it says 'no cognition'; because it breaks the real grasped it again says 'no attainment.'"

He cites the four-line verse on realizing the real in Yogācāra, which brings to life the sequence in which grasper and grasped are both extinguished:

依識有所得，境無所得生； 依境無所得，識無所得生。

("Grounded on the consciousness, an apprehended object arises; / when the object is seen as nothing apprehended, / grounded on that object's being nothing apprehended, / the consciousness too arises as nothing apprehended.")

The first two lines: the reason you feel there is "an attained object" is that you are still grounded on "the grasping consciousness"; and when you illumine that "the grasped object is in fact nothing attained," the third and fourth lines turn it over — "the grasping consciousness" likewise becomes nothing attained. Grasper and grasped are a pair: topple one, and the other cannot stand. So 「無智亦無得」 does not negate that practice is of use; it is that, cultivated to the very last, even this final trace of grasping at grasper-and-grasped — "I am cultivating, I have attained something" — is loosened. This alone is truly arriving home.

(In the ancient masters' transmitted recensions this last line varies. Dānapāla's (施護) version reads 「無智，無所得，亦無無得」 — "no cognition, nothing attained, and no non-attainment" — negating even the notion of "non-attainment," so that one sees still more clearly: you are not even to grasp at "I have realized emptiness.")

Reading through the mirror of Yogācāra: one and the same string of "no," in the sūtra's words and the treatise's words

It is not that this passage of the Heart Sūtra needs Yogācāra in order not to frighten, nor that Yogācāra copied it from the Heart Sūtra. It is one and the same matter — "negating the wholly-imagined nature, extinguishing the two graspings, grasper and grasped" — which the Heart Sūtra negates with a string of "無," and which Yogācāra states as "negating only the grasped," "the two graspings both empty," and "the four lines on realizing the real." One gives you the courage to let go; the other gives you the measure: what is let go is the grasping, not the dharmas.

Read this passage through, and the next line, 「以無所得故」 ("because nothing is attained"), follows as water finds its course: precisely because even cognition and attainment are nothing attained, the bodhisattva truly loosens the last hand still gripping — and this loosening is exactly the beginning of great freedom.

One short clause, yet the axle of the whole sūtra

「以無所得故」 ("because nothing is attained") — five characters only, wedged between a long string of "no … no …" and the "attaining bodhi, final nirvāṇa" that follows, and easy to read straight past. In fact it is the axle of the entire Heart Sūtra: the "no" of the first half is gathered up here, and the "attainment" of the second half is born from here.

But the three words "nothing attained" hardly sound like good news: after all that practice, you end up with nothing at all attained? Wasn't it for nothing, then? Heard wrongly, this one clause will leave a person disheartened; heard rightly, you see that it is the greatest turning point of all.

"Nothing attained" is not coming back empty-handed — it is no longer grasping

Woncheuk puts his finger on it in a single phrase: 「『以無所得故』者，辨空離相」 ("'because nothing is attained' distinguishes emptiness as the parting-from-marks"). This "nothing attained" is an adjudication of just what "emptiness" is: emptiness is the parting from every mark, the abiding in no single place. The preceding six gates have been negated one after another — aggregates, sense-fields, elements, dependent origination, the truths, cognition-and-attainment — emptying out everything you could grasp; and here it is summed up in one phrase: nothing is attained.

What matters is this: non-attainment negates the standoff between "the self that attains" and "the dharma that is attained" — it does not say your hands are empty and you have accomplished nothing. Kuiji says this clause is 「顯空中無法所以」 ("showing the reason there is no dharma within emptiness") — pointing out why everything before was said to be "non-existent": because there is no dharma that can be grasped, as a truly existent thing, to be attained. Put otherwise, "nothing attained" negates the clinging to "a truly existent thing to be attained"; it does not deny that there is a real realized state.

Why "nothing attained" can, on the contrary, "attain"

This is where it joins the Yogācāra transformation of the basis (轉依). Ordinary beings are not free precisely because, thought after thought, they are "attaining something" — clutching at an object, gripping a result, falling into grasper-and-grasped; this very clinging is itself the bondage. So as long as there is still "something attained," one is still in bondage and cannot reach true freedom.

Turn it around, and only with "nothing attained" — the clinging of grasper-and-grasped let go — does the road open through: the mind without obstruction, without fear, final nirvāṇa; the buddhas of the three times attaining supreme awakening — all of it is born from this "nothing attained." So this clause is not the closing bill of practice (ending up with nothing); it is the axle of practice: only by casting off the clinging to "a truly existent thing to be attained" does one turn over to the fruit of purity and freedom. Non-attainment is precisely the gate to true attainment.

The mirror of Yogācāra: one axle, in the sūtra's words and the treatise's words

It is not that the Heart Sūtra's "nothing attained" needs Yogācāra's "transformation of the basis" before it makes sense, nor that Yogācāra copied it from the Heart Sūtra. It is one and the same matter — "not abiding in grasper-and-grasped, casting off clinging and gaining the fruit" — where the Heart Sūtra takes 「以無所得故」 as the axle in one clause, and Yogācāra uses "non-attainment, non-abiding, transformation of the basis" to spell out the very catch between that casting-off and that gaining.

Read these five characters through, and the next passage follows of itself: the bodhisattva, relying on this "nothing attained" prajñā, finds the mind truly loosened, without obstruction — great freedom begins here.

Form: this layer reads the present passage through the mirror of Yogācāra (Consciousness-Only) — taking "the manifesting of nondiscriminating cognition," "the transformation of the basis (āśraya-parāvṛtti)," and "transforming the eight consciousnesses into the four cognitions and accomplishing the three bodies," and holding them up to the Heart Sūtra's "the mind is unobstructed, final nirvāṇa, attaining supreme awakening" and the mantra at the close. The mirror is not the sūtra; Kuiji's Youzan and Woncheuk's Zan themselves read the Heart Sūtra through Yogācāra.

When You Have Attained Nothing at All, What in Fact Comes of It

The previous passage drove the reader to "because nothing is attained" — letting go of everything, grasping at nothing. Anyone reading this far cannot help but ask: then, having let go all the way down to attaining utterly nothing, what in the end is it that one gets? This last passage of the Heart Sūtra is the answer. It gives two layers of fruit: the bodhisattva's fruit, and the buddhas' fruit.

The Bodhisattva's Fruit: the Mind, at Last, Comes Loose

"菩提薩埵依般若波羅蜜多故，心無罣礙；無罣礙故，無有恐怖，遠離顛倒夢想，究竟涅槃。" — "Because the bodhisattvas rely on prajñā-pāramitā, the mind is unobstructed; because it is unobstructed, there is no fear; far removed from inverted dream-thinking, [they reach] final nirvāṇa."

This is a chain coming loose, link releasing link. Earlier, "nothing is attained" loosened the clinging of grasper to grasped, and so —

• 心無罣礙, the mind is unobstructed: Yogācāra says the ordinary mind is forever hooked by "grasper and grasped" (the two graspings, grāhaka / grāhya) — and that is the obstruction. The moment nondiscriminating cognition (nirvikalpa-jñāna) manifests, grasper and grasped both fall away, and the hook that snared the mind comes loose; hence the mind is unobstructed.
• 無有恐怖, there is no fear: the root of fear is "there is a real self" that dreads losing, dreads being hurt. Once self-grasping loosens, the subject that did the fearing is itself empty, and so naturally there is no fear.
• 遠離顛倒夢想, far removed from inverted dream-thinking: taking the impermanent for permanent, the self-less for a self, suffering for pleasure — these inversions are all built on grasping at the real; once that grasping is negated, the inverted dream-thinking is left far behind.
• 究竟涅槃, final nirvāṇa: this is the fruit obtained by the transformation of the basis (āśraya-parāvṛtti). The nirvāṇa of Yogācāra is no dead stillness; it is the non-abiding nirvāṇa (無住處涅槃) — not bound by saṃsāra, yet not sunk in a self-contented quiescence either; compassion and wisdom coursing together, coming and going freely.

This whole string is the fuller unfolding, in the latter section, of the opening section's "crossing beyond all suffering": there it spoke of crossing suffering; here it tells what the scene is once the crossing is complete — the mind loosened, fearless, free of inversion, having attained nirvāṇa.

The Buddhas' Fruit: Turning a Whole Life into Wisdom

"三世諸佛依般若波羅蜜多故，得阿耨多羅三藐三菩提。" — "The buddhas of the three times, because they rely on prajñā-pāramitā, attain supreme perfect awakening (anuttarā-samyak-saṃbodhi)."

The Heart Sūtra does not stop at the bodhisattva's freedom; it pushes the fruit all the way down: even all the buddhas of the three times became buddhas by relying on just this prajñā. And "attaining unsurpassed perfect awakening," read through Yogācāra, is a stupendous affair — the transformation of the basis carried to its consummation: these eight consciousnesses of yours, transformed whole into four kinds of cognition. Kuiji says: 「至佛位中，轉異熟識名圓鏡智…轉第六識名妙觀智…轉前五識名成事智」 — "On reaching the buddha-stage, the maturation-consciousness is transformed and named the great-mirror cognition … the sixth consciousness transformed is named the wondrous-observing cognition … the first five consciousnesses transformed are named the accomplishing-of-deeds cognition." Woncheuk says: 「轉去阿賴耶識得自性身，大圓鏡智轉第八得故」 — "by transforming away the store-consciousness one obtains the self-nature body, since the great-mirror cognition is obtained by transforming the eighth."

Which is to say: becoming a buddha is not gaining some further thing outside oneself; it is taking your present eight consciousnesses, defiled by grasping, and transforming them in their very substance into the pure four cognitions and the perfect three bodies. Prajñā, this cognition of "attaining nothing," is precisely the pivot of that great turning — casting off the gross-heaviness (dauṣṭhulya) of grasping at the real as basis, and obtaining the pure cognition as basis. Attaining nothing at all, what comes of it turns out to be a whole life utterly transformed into wisdom.

The Mantra at the Close: Prajñā Itself Is That Great Bright Mantra

"故知般若波羅蜜多是大神咒、是大明咒、是無上咒、是無等等咒，能除一切苦，真實不虛。" — "So one should know: prajñā-pāramitā is the great-numinous mantra, the great-bright mantra, the unsurpassed mantra, the unequalled-equal mantra; it can remove all suffering, true and not false."

Here the Heart Sūtra gathers up the prajñā it has been expounding all along into a single "mantra." This is no sudden swerve into superstition — it is to say: this prajñā-wisdom, able to remove all suffering, true and not false, when its power is concentrated, is a great bright mantra without compare. "Bright" (明) breaks the dark; prajñā is precisely the great brightness that breaks the dark of ignorance.

As for how the closing lines of mantra, "揭帝揭帝…" ("gate gate …"), are to be received, the ancient masters have two transmissions, and here they are set forth faithfully side by side, with no judging on your behalf:

• Kuiji: preserves the Sanskrit sound and does not translate it word for word — the mantra is an esoteric retention; what matters is that in reciting it the spiritual efficacy is swiftly readied, and there is no need to break it into words and phrases to be explained.
• Woncheuk: sets up a position that "it may be translated," and glosses it word for word as 「度度（去吧去吧）、彼岸到、到竟、速疾」 — "cross over, cross over (go, go); arrived at the far shore; arrived all the way; swiftly" — a line urging one on to cross the river and reach the shore.

Both are transmitted by the ancient masters: whether you take it as the Sanskrit sound of an esoteric retention, or as plain words urging the crossing, each has an ancient master to stand on. The station of the mantra lies, by its very nature, at the end of speech — earlier, a thousand words and ten thousand have said "emptiness" to its very limit; at last it settles into a single sound, so that you no longer linger over reasoning but set out on the road at once.

The Mirror of Yogācāra: One and the Same Coming-Home, in the Words of the Sūtra and the Words of the Treatise

It is not that the Heart Sūtra's "final nirvāṇa, attaining awakening" needs Yogācāra's "transformation of the basis, four cognitions and three bodies" before it counts; nor that Yogācāra copied it from the Heart Sūtra. It is one and the same matter — "casting off grasping, transforming the basis, accomplishing cognition" — which the Heart Sūtra gathers up in "the mind is unobstructed, final nirvāṇa, attaining supreme awakening," and which Yogācāra states, as the inner scene of that coming-home, in "transforming the eight consciousnesses into the four cognitions, accomplishing the three bodies, the two nirvāṇas."

The whole Heart Sūtra is here complete: Avalokiteśvara, holding up the deep cognition that does not discriminate (opening section), illumines and breaks the grasping at the five aggregates as real, and crosses beyond suffering; all along the way negating the six gates, attaining nothing (middle section); and at last the mind unobstructed, consciousness transformed into cognition, final nirvāṇa (latter section). The final line of mantra gathers this whole road into a single sound and hands it to you: Go — go to the far shore.