Turning Consciousness into Wisdom

Why the Tathāgata's Mastery-Wisdom Is the Four Wisdoms into Which the Eight Consciousnesses Are Turned, Not Four Spiritual Cognitions Acquired Beyond the Severing of Defilements

中文主題：轉識成智——如來自在之智何以是八識所轉之四智，而非斷惑之外別得之四種神智

I. The Question

The prior paper established the Tathāgata's mastery's manifestation-structure — the three bodies — and, at its close, handed to this paper the four wisdoms by which "the three bodies are disclosed (turning consciousness into wisdom)." This paper takes up the baton with a direct question: the Tathāgata's mastery "wisdom" — what is it?

The question presses because of an imagination easy to slide into. The prior three papers have repeatedly broken the comparing reading that "the buddha-fruit's virtues are something acquired beyond the severing of defilements" (the exhaustion of taints is mastery, the mastery not an acquired supernormal power — the frame of this series' Arhat division; the ten epithets are a signature, not ten acquired virtues — P01; the fruit-level is not the causal-level brightened — P02; the three bodies are a manifestation, not three separate Buddhas — P03). Arrived at "wisdom," the same temptation recurs: to picture a Buddha's "four wisdoms" as four lofty spiritual cognitions a Buddha acquires beyond exhausting the defilements — as if severing were a cleaning, and the four wisdoms four treasures moved in after the cleaning.

This paper holds the picture still misplaced. The Tathāgata's cognitive structure is the four wisdoms — the great-mirror, equality, observation, and accomplishing wisdoms — and the four wisdoms are not four new spiritual cognitions a Buddha acquires from outside, but the four wisdoms into which the defiled eight consciousnesses are "turned" (turning consciousness into wisdom). The mastery's wisdom is what "turning" (turning the defiled into the pure) accomplishes, not a thing "acquired" (added from outside). The proof is in the root verdict of Yogācāra: "turning the defiled eighth, seventh, sixth, and fifth consciousness-classes, they are attained in order" — the four wisdoms are turned from the eighth, seventh, sixth, and first-five consciousnesses; and "though wisdom is not consciousness, it turns in dependence on consciousness" — wisdom is not consciousness, yet it is attained by turning in dependence on consciousness, not a wisdom fetched from elsewhere after consciousness ceases. So "the four wisdoms full" is not four treasures moved in beyond the severing of defilements, but one and the same mind's defiled portion (the eight consciousnesses) turned into its pure portion (the four wisdoms).

This carries forward the Attainment axis's constant frame. From its Arhat division this series has held: the buddha-fruit's virtues are aspects of "severing / turning / manifesting," not things "acquired from outside" — the freedom of exhaustion is the aspect of exhaustion (not an acquired power), the ten epithets are the signature of the ultimate mastery (not ten acquired virtues), the three bodies are one mastery's manifestation-structure (not three separate Buddhas). This paper extends the same frame to "wisdom": the four wisdoms are the aspect of the eight consciousnesses turned (not spiritual cognitions acquired beyond the severing). Name, body, and wisdom are all one buddha-fruit mastery's "turning / severing / manifesting," not things existing apart from the mastery.

This paper rests on the Yogācāra establishment of the four wisdoms (the Cheng weishi lun the pivotal locus, the Buddhabhūmi-śāstra and Mahāyāna-saṃgraha corroborating). The argument runs in three moves (§III): the four wisdoms not acquired powers but turned from the eight consciousnesses (turning consciousness into wisdom); the four wisdoms as the cognitive engine of the three bodies; and the import of the mastery's wisdom being "turned," not "acquired" (the Attainment axis's keynote throughout, and "turning consciousness into wisdom" as an expedient expression). Section IV cuts the interdisciplinary convergence (reason in §VI). Section V offers middle-way corrections. Section VI concludes and hands the unfolding of the four wisdoms' function (the ten powers, four fearlessnesses, eighteen distinctive dharmas) to P05 onward.

II. The Canonical Basis

2.1 The four wisdoms in full and by definition

The standard establishment of the four wisdoms is in the Cheng weishi lun, fascicle 10, the ultimate stage. The treatise lists the four wisdom-associated mind-classes of the buddha-ground and defines each:

云何四智相應心品？一、大圓鏡智相應心品：謂此心品，離諸分別……如大圓鏡，現眾色像。二、平等性智相應心品：謂此心品，觀一切法，自、他有情，悉皆平等……三、妙觀察智相應心品：謂此心品，善觀諸法自相、共相，無礙而轉……四、成所作智相應心品：謂此心品，為欲利樂諸有情故，普於十方，示現種種變化三業，成本願力所應作事。¹

"What are the four wisdom-associated mind-classes? First, the great-mirror-wisdom mind-class: this mind-class is free of all discrimination… like a great mirror manifesting all images. Second, the equality-wisdom mind-class: this mind-class regards all dharmas, self and other beings, as wholly equal… Third, the observation-wisdom mind-class: this mind-class well observes the particular and common marks of dharmas, turning unobstructed… Fourth, the accomplishing-wisdom mind-class: this mind-class, to benefit and gladden beings, manifests throughout the ten directions the various transformations of the three kinds of action, accomplishing the tasks of the original vow."

The great-mirror wisdom "like a great mirror manifesting all images" (clearly manifesting all, free of discrimination, neither forgetting nor confused), the equality wisdom "regarding self and other beings as wholly equal," the observation wisdom "well observing the particular and common marks of dharmas, turning unobstructed" (teaching freely in the assembly), the accomplishing wisdom "manifesting throughout the ten directions the various transformations of the three kinds of action, accomplishing the tasks of the original vow" (the transformative function benefiting beings). The Buddhabhūmi-śāstra, fascicle 3, defines the four wisdoms one by one, confirming the Cheng weishi lun:

大圓鏡智者，謂離一切我我所執……平等性智者，謂觀自他一切平等，大慈大悲恒共相應……建立佛地無住涅槃……妙觀察智者……於大眾會能現一切自在作用，斷一切疑雨大法雨……成所作智者，謂能遍於一切世界，隨所應化應熟有情，示現種種無量無數不可思議佛變化事……²

"The great-mirror wisdom: free of all grasping at I and mine… The equality wisdom: regarding self and other as wholly equal, ever accompanied by great loving-kindness and compassion… establishing the buddha-ground's non-abiding nirvāṇa… The observation wisdom: … in the great assembly able to manifest every masterful function, resolving all doubts, raining down the great dharma-rain… The accomplishing wisdom: able, throughout all worlds, according to the beings to be transformed and ripened, to manifest the various measureless, innumerable, inconceivable transformative deeds of a Buddha…"

The two treatises agree in their items and confirm each other in definition. Worth marking: the Buddhabhūmi-śāstra, under the equality wisdom, states plainly that it "establishes the buddha-ground's non-abiding nirvāṇa" — the four wisdoms are not isolated cognitive functions; the equality wisdom is bound precisely to the non-abiding nirvāṇa (this sense handed to the division's closing paper, P10). And the Buddhabhūmi-śāstra takes "the pure dharma-realm" together with the four wisdoms as the buddha-ground's "five dharmas":

謂所依、所行、所攝，即當所說清淨法界、大圓鏡智、平等性智、妙觀察智、成所作智……是佛所依、所行、所攝，故名佛地。³

"The basis, the field, and the comprised — namely the pure dharma-realm, the great-mirror wisdom, the equality wisdom, the observation wisdom, the accomplishing wisdom… are the Buddha's basis, field, and comprised; hence 'the buddha-ground.'"

The pure dharma-realm plus the four wisdoms is the buddha-ground's five dharmas (the very five dharmas of the prior paper P03's "the five-fold nature comprising the three bodies"). Here the four wisdoms are seen in full.

2.2 The correspondence of turning the eight consciousnesses into the four wisdoms: wisdom turns in dependence on consciousness

The provenance of the four wisdoms is "turning the eight consciousnesses into the four wisdoms." The Cheng weishi lun marks the correspondence and its import plainly:

此轉有漏八、七、六、五識相應品，如次而得。智雖非識，而依識轉，識為主故，說轉識得。又有漏位智劣識強，無漏位中，智強識劣。為勸有情依智捨識，故說轉八識而得。⁴

"This turns the defiled eighth, seventh, sixth, and fifth consciousness-associated classes, attained in order. Though wisdom is not consciousness, it turns in dependence on consciousness; because consciousness is the main thing, it is said 'attained by turning consciousness.' Further, at the defiled stage wisdom is weak and consciousness strong; at the untainted stage wisdom is strong and consciousness weak. To urge beings to rely on wisdom and discard consciousness, it is said 'turning the eight consciousnesses, they are attained.'"

"Turning the defiled eighth, seventh, sixth, and fifth consciousness-classes, attained in order" marks plainly: the eighth consciousness turns into the great-mirror wisdom, the seventh into the equality wisdom, the sixth into the observation wisdom, the first five into the accomplishing wisdom. The four wisdoms are not fetched from elsewhere; they are turned from the eight consciousnesses. Two phrases especially deserve note. First, "though wisdom is not consciousness, it turns in dependence on consciousness" — wisdom is not consciousness (not the same thing), yet it is attained by turning in dependence on consciousness, not a wholly unrelated wisdom arising elsewhere after consciousness ceases. Second, "at the defiled stage wisdom is weak and consciousness strong; at the untainted stage wisdom is strong and consciousness weak" — not consciousness wholly ceasing and wisdom wholly newly arising, but one and the same mind's defiled-strong turning into pure-strong. So the "turning" of "turning consciousness into wisdom" is one mind's turning of defiled and pure, not the abolishing of consciousness to set up a wisdom. The treatise adds plainly: "to urge beings to rely on wisdom and discard consciousness, it is said 'attained by turning consciousness'" — "attained by turning" is an expedient expression set up to urge reliance on wisdom and the discarding of consciousness (see §V).

2.3 The four wisdoms comprise the three bodies: the four wisdoms are the cognitive engine of the three bodies

The relation of the four wisdoms to the prior paper's three bodies the Cheng weishi lun shows by the four wisdoms comprising the three bodies:

圓鏡智品，轉去藏識，而證得故。中二智品，攝受用身，說平等智，於純淨土，為諸菩薩現佛身故；說觀察智，大集會中，說法斷疑現自在故；……後一智品，攝變化身，說成事智，於十方土，現無量種難思化故。⁵

"The mirror-wisdom class, turning away the store-consciousness, realizes it. The middle two wisdom-classes comprise the enjoyment-body: the equality wisdom, in a pure land, manifests a Buddha-body for the bodhisattvas; the observation wisdom, in the great assembly, teaches and resolves doubts, manifesting mastery… The last wisdom-class comprises the transformation-body: the accomplishing wisdom, in the lands of the ten directions, manifests measureless inconceivable transformations."

The great-mirror wisdom-class (turning away the store-consciousness) comprises the self-nature body (dharma-body), the middle two wisdom-classes (equality, observation) the enjoyment-body, the last wisdom-class (accomplishing) the transformation-body. The prior paper's three bodies (the manifestation-structure) here find their cognitive engine: the three bodies do not appear without cause, but are comprised and manifested by the four wisdoms — the equality wisdom manifesting a Buddha-body (other-enjoyment), the observation wisdom manifesting mastery in teaching (enjoyment), the accomplishing wisdom manifesting transformative function (transformation). The Mahāyāna-saṃgraha's "Wisdom That Is the Fruit" section, too, within the three-body frame lists the four wisdoms' mastery and marks their basis in the turning of consciousness:

……由圓鏡、平等、觀察、成所作智自在，由轉識蘊依故。⁶

"…by the mastery of the mirror, equality, observation, and accomplishing wisdoms, by reason of turning the basis that is the aggregate of consciousness."

"By the mastery of the mirror, equality, observation, and accomplishing wisdoms… by reason of turning the basis that is the aggregate of consciousness" — the four wisdoms are "mastery" (the wisdom-mastery), and their attainment is "by turning the aggregate-of-consciousness basis" (by turning away the support that is the consciousness-aggregate). This binds this paper's thread: the mastery's wisdom (the four wisdoms) is grounded in the turning of consciousness (turning the aggregate-of-consciousness basis), not acquired apart from consciousness. (It must be marked: the comprising of the three bodies by the four wisdoms the Cheng weishi lun gives as "one position," with another held alongside; this paper takes this one position as its basis without fixing it as the sole conclusion — see §V.)

III. The Core Argument

Section II has set out three things: the four wisdoms in full and by definition (2.1), the correspondence of turning the eight consciousnesses into the four wisdoms and "wisdom turns in dependence on consciousness" (2.2), and the four wisdoms comprising the three bodies (2.3). This section establishes the thesis: the Tathāgata's mastery-wisdom is the four wisdoms, and the four wisdoms are turned from the eight consciousnesses, not spiritual cognitions acquired beyond the severing of defilements. In three layers — the four wisdoms turned, not acquired; the four wisdoms as the cognitive engine of the three bodies; the import of the mastery's wisdom being "turned," not "acquired."

3.1 The four wisdoms are not four acquired powers but turned from the eight consciousnesses (turning consciousness into wisdom)

Break first the "acquired" reading. It pictures "becoming a Buddha and attaining the four wisdoms" thus: severing the defilements is a cleaning, the four wisdoms four treasures moved in after the cleaning — as if severing and acquiring were two separate stages, first severing, then acquiring. But the treatise does not say so: the four wisdoms are "the defiled eighth, seventh, sixth, and fifth consciousness-classes turned, attained in order" (2.2) — their "attainment" is a "turning," turned from the eighth, seventh, sixth, and first-five consciousnesses, not fetched from outside consciousness.

More crucially, "though wisdom is not consciousness, it turns in dependence on consciousness" cuts off the thought of "a wisdom arising elsewhere." Wisdom is indeed not consciousness (not the same), yet its attainment is "by turning in dependence on consciousness" — turned from the eight consciousnesses, not arising out of nothing elsewhere after consciousness ceases. And "at the defiled stage wisdom is weak and consciousness strong; at the untainted stage wisdom is strong and consciousness weak": not "consciousness wholly ceasing, wisdom wholly new," but one and the same mind's defiled portion (consciousness-strong) turned into its pure portion (wisdom-strong). So the fullness of the four wisdoms is not a Buddha's moving in four treasures beyond the severing of defilements, but one and the same mind turning the defiled into the pure to disclose four pure functions. As with polishing a mirror — the dust on the mirror wiped clean (severing), the mirror's bright reflecting appears (wisdom); the reflecting is not a new mirror moved in after the dust is gone, but the same mirror's function disclosed in freedom from dust. The great-mirror wisdom's simile, "like a great mirror manifesting all images," points to just this.

This carries forward the Attainment axis's constant frame. The Arhat division set "the exhaustion of taints is mastery" — mastery is the aspect of exhaustion, not a supernormal power acquired beyond exhaustion; P01 set the ten epithets as the signature of the ultimate mastery, not ten acquired virtues; P02 judged the fruit-level not the causal-level brightened; P03 set the three bodies as one mastery's manifestation, not three separate establishments. This paper extends the same frame to "wisdom": the four wisdoms are the aspect of the eight consciousnesses turned, not spiritual cognitions acquired beyond the severing.

3.2 The four wisdoms are the cognitive engine of the three bodies

The second layer establishes the relation of the four wisdoms to the three bodies. The prior paper set the three bodies as the mastery's manifestation-structure and handed their underlying four wisdoms to this paper. Now per 2.3: the great-mirror wisdom-class comprises the self-nature body, the middle two wisdom-classes (equality, observation) the enjoyment-body, the last wisdom-class (accomplishing) the transformation-body — the four wisdoms are the cognitive engine of the three bodies. The three bodies can so appear precisely because the four wisdoms so operate: because the equality wisdom manifests a Buddha-body, there is the other-enjoyment body (manifested for the ten-ground bodhisattvas); because the observation wisdom teaches and resolves doubts in the great assembly, there is the enjoyment-body's function of teaching; because the accomplishing wisdom manifests inconceivable transformations in the ten directions, there is the transformation-body. The dharma-body (self-nature body) is realized by the great-mirror wisdom-class turning away the store-consciousness — clearly manifesting all and serving as the support of all the bodies.

So the prior paper's "the three bodies are the mastery's manifestation-structure" and this paper's "the four wisdoms are the mastery's cognitive structure" are two faces of one and the same buddha-fruit mastery: the three bodies are its "what it appears as" (to whom it manifests which body), the four wisdoms its "by what cognition it appears" (by which wisdom it manifests this body). The manifestation of the three bodies is accomplished by the cognition of the four wisdoms — the manifestation-structure is what the cognitive structure manifests. It must be marked honestly: the comprising of the three bodies by the four wisdoms the Cheng weishi lun gives as "one position" (the treatise holds several positions side by side, "one position… another position…"); this paper takes the position "the great-mirror comprises the self-nature body, the middle two the enjoyment-body, the accomplishing the transformation-body" as its basis, marking it as one position of the treatise, not fixed as a cross-treatise conclusion (see §V).

3.3 The mastery's wisdom is "turned," not "acquired": the Attainment axis's keynote throughout

The third layer gathers up in import. The fullness of the four wisdoms is not a Buddha's acquiring four spiritual cognitions beyond the severing of defilements, but the untainted stage's "wisdom strong, consciousness weak" — one and the same mind's defiled portion turned into its pure portion. This import is precisely the Attainment axis's keynote, held throughout from its Arhat division: the buddha-fruit's every aspect (name · body · wisdom) is an aspect of "turning / severing / manifesting," not a thing "acquired from outside." The freedom of exhaustion is the aspect of exhaustion (not an acquired power), the ten epithets are a signature (not acquired virtues), the fruit-level is not the causal-level brightened, the three bodies are a manifestation (not three Buddhas), the four wisdoms are turned (not acquired spiritual cognitions) — the five share one frame. A Buddha does not, after severing the defilements, go elsewhere to "acquire" three batches of treasures, name, body, and wisdom; a Buddha, in the very moment of exhausting-and-turning-pure, has the mastery's name (readable aspect), body (visible aspect), and wisdom (cognitive aspect) disclosed all at once.

One measure of import must also be marked: "turning consciousness into wisdom" is an expedient expression. The treatise states plainly, "though wisdom is not consciousness, it turns in dependence on consciousness; because consciousness is the main thing, it is said 'attained by turning consciousness,'" and "to urge beings to rely on wisdom and discard consciousness, it is said 'turning the eight consciousnesses, they are attained'" — the phrases "turning consciousness into wisdom," "attaining wisdom by turning consciousness," are an expedient designation set up to urge beings to "rely on wisdom and discard consciousness." It must not be grasped that "a wisdom is produced out of consciousness" (a reified thing arising), nor that "after consciousness ceases there separately arises a wisdom." Wisdom is not consciousness, nor does it exist apart from consciousness; the turning of defiled and pure is not the arising-and-ceasing of a real entity. To grasp "turning" as a real thing's production is to fall into another guise of "acquiring."

✅ Doctrinally sound: taken together, the three layers support "the Tathāgata's mastery-wisdom is the four wisdoms, turned from the eight consciousnesses, not spiritual cognitions acquired beyond the severing of defilements" — turned, not acquired (the defiled eighth, seventh, sixth, fifth turned in order · wisdom turns in dependence on consciousness · wisdom strong, consciousness weak), the cognitive engine of the three bodies (the four wisdoms comprise the three bodies · the manifestation-structure is what the cognitive structure manifests), the mastery's wisdom "turned" not "acquired" (the Attainment axis's keynote throughout, and "turning consciousness into wisdom" an expedient expression). The comprising of the three bodies by the four wisdoms takes the Cheng weishi lun's one position, marked as one position, not fixed (§V); the unfolding of the four wisdoms' function (the ten powers, four fearlessnesses, eighteen distinctive dharmas) is handed to P05 onward.

IV. Interdisciplinary Convergence

(This paper deliberately omits the interdisciplinary-convergence section; the rationale is given in §VI. The structure of "turning consciousness into wisdom" — one and the same mental substrate, the defiled portion turned into the pure, not consciousness abolished to set up a wisdom — does resemble cognitive science's "functional reorganization of one neural substrate" or the thesis of "transformation, not replacement," yet the former is dominated by "the reorganization of functional plasticity," only superficially like this paper's sense of "the transformation of the basis as the soteriological turning of severing the two hindrances and turning the defiled into the pure, where wisdom is neither consciousness nor apart from consciousness." Turning consciousness into wisdom is not functional reorganization but the defiled-to-pure turning disclosed by severing the hindrances. To force the convergence would falsify; better to leave it out.)

V. Middle-Way Corrections

This section clears away three common misreadings bearing on the thesis.

❌ Misreading 1: "The four wisdoms = four lofty spiritual cognitions a Buddha acquires beyond the severing of defilements (severing and acquiring as two stages, first severing, then acquiring four treasures)." This the paper breaks in full. The four wisdoms are "the defiled eighth, seventh, sixth, and fifth consciousness-classes turned, attained in order" (2.2) — their "attainment" is a "turning," turned from the eight consciousnesses, not fetched from outside; "though wisdom is not consciousness, it turns in dependence on consciousness," not a wisdom arising elsewhere after consciousness ceases; "wisdom weak, consciousness strong" turned into "wisdom strong, consciousness weak," one mind's turning of defiled and pure, not consciousness wholly ceasing and wisdom wholly new (3.1). To picture becoming a Buddha and attaining the four wisdoms as "moving in four treasures after a cleaning" is to fall into this error.

⚠️ Correction 2: The comprising of the three bodies by the four wisdoms is "one position" of the Cheng weishi lun; the treatise holds another alongside, and this paper takes the one position as its basis without fixing it as a cross-treatise conclusion. The Cheng weishi lun, treating the four wisdoms comprising the three bodies, sets several positions side by side ("one position… another position…," e.g. whether the self-nature body comprises only the great-mirror-wisdom class or also the others). This paper takes the position "the great-mirror-wisdom class comprises the self-nature body, the middle two the enjoyment-body, the last the transformation-body" to establish "the four wisdoms as the cognitive engine of the three bodies" (3.2), while marking it as one position of the treatise; the precise comprising of the three bodies by the four wisdoms (which wisdom comprises which body alone, or by mutual comprising) is itself variously held in the treatise, and this paper does not adjudicate or fix it as the sole conclusion.

⚠️ Correction 3: "Turning consciousness into wisdom" is an expedient expression; do not grasp that a wisdom is really produced out of consciousness, nor that after consciousness ceases a wisdom separately arises. The treatise states plainly, "though wisdom is not consciousness, it turns in dependence on consciousness; because consciousness is the main thing, it is said 'attained by turning consciousness'" and "to urge beings to rely on wisdom and discard consciousness, it is said 'attained by turning the eight consciousnesses'" — the phrases "turning consciousness into wisdom," "attaining wisdom by turning consciousness," are an expedient designation set up to urge beings to rely on wisdom and discard consciousness. Its measure must be marked honestly: wisdom is not consciousness (not the same), nor does it exist apart from consciousness (not a wisdom really existing outside consciousness); the turning of defiled and pure is not the arising-and-ceasing of a real entity. To grasp "turning" as the production of a real thing (a wisdom produced out of consciousness) is to fall into another guise of "acquiring"; to grasp "after consciousness ceases a wisdom separately arises" contradicts the treatise's sense of "wisdom turns in dependence on consciousness." This paper takes the expedient sense of "turning," adding no real entity. Also, the mind-associates belonging to each of the four wisdoms severally, and the internal fine disputes, are not this paper's task — marked, not unfolded.

VI. Conclusion

Essential restatement. The Tathāgata's mastery-wisdom is the four wisdoms (great-mirror · equality · observation · accomplishing), and the four wisdoms are turned from the eight consciousnesses, not spiritual cognitions acquired beyond the severing of defilements. Three layers support this: turned, not acquired — "the defiled eighth, seventh, sixth, and fifth consciousness-classes turned, attained in order," wisdom turning in dependence on consciousness, wisdom strong and consciousness weak, one mind's turning of defiled and pure (3.1); the cognitive engine of the three bodies — the great-mirror comprising the self-nature body, the middle two the enjoyment-body, the accomplishing the transformation-body, the three bodies' manifestation accomplished by the four wisdoms' cognition (3.2); the mastery's wisdom "turned," not "acquired" — the Attainment axis's keynote throughout (name · body · wisdom all aspects of "turning / severing / manifesting," not acquired), and "turning consciousness into wisdom" an expedient expression, not to be grasped as a wisdom really produced out of consciousness (3.3).

Guidance for practice. This paper corrects, for the practitioner, the thought of "seeking to acquire the four wisdoms' spiritual powers beyond the severing of defilements." One approaching the buddha-fruit easily pictures "becoming a Buddha" as "first exhausting the defilements, then going on to acquire four lofty spiritual cognitions," and so seeks, beyond severing, a separate effort of "acquiring wisdom." "Turning consciousness into wisdom" is the remedy: the four wisdoms are not treasures moved in beyond the severing of defilements, but the pure functions disclosed as one and the same mind turns the defiled into the pure — as a mirror freed of dust shows its bright reflecting of itself, not a new mirror moved in after the dust is gone. What the practitioner is to do is not "to acquire the four wisdoms separately beyond severing," but "to turn the defiled into the pure" (to sever the two hindrances, to turn the eight consciousnesses) — the transformation of the basis fulfilled, the four wisdoms appear of themselves, as dust exhausted the mirror brightens, no brightness sought apart from the mirror. Especially worth keeping is the expedient measure of "turning consciousness into wisdom": do not grasp that there is a real wisdom to be drawn out of consciousness and chase it outward — to chase an "attainable wisdom" only becomes a new bond; only exhaust the work of turning the defiled into the pure, and the pure wisdom discloses of itself.

Open questions. First, this paper cuts the Section IV interdisciplinary convergence (turning consciousness into wisdom is only superficially like "neural functional reorganization"). Second, the precise comprising of the three bodies by the four wisdoms the Cheng weishi lun holds in variant positions; this paper takes one position as its basis and marks it as such without adjudicating, to be handled in its own section should a later paper treat the internal disputes of the Yogācāra four wisdoms' comprising. Third, this paper establishes the four wisdoms as the Tathāgata's cognitive structure, while the four wisdoms' function — the great-mirror wisdom's clear reflecting, the equality wisdom's great loving-kindness and compassion and the non-abiding nirvāṇa, the observation wisdom's teaching and resolving of doubts, the accomplishing wisdom's transformative function, and the fruition-virtues unfolded from them (the ten powers, four fearlessnesses, eighteen distinctive dharmas) — this paper establishes only the four wisdoms' substance and provenance (turning consciousness into wisdom); the unfolding of their function is handed to TATHAGATA-P05 onward (the ten powers, four fearlessnesses, eighteen distinctive dharmas); and the equality wisdom's "establishing the buddha-ground's non-abiding nirvāṇa" is gathered up by the division's closing paper, P10 (the ultimate non-abiding nirvāṇa).

Notes

References

Primary Buddhist Sources

• Cheng weishi lun (成唯識論). By Dharmapāla et al., trans. Xuanzang. T31, no. 1585《成唯識論》Vijñaptimātratā-siddhi-śāstraT31, No. 1585View on CBETA online reader ↗. Fascicle 10, the ultimate stage (the four wisdoms in full and by definition · turning the eight consciousnesses into the four wisdoms · wisdom turns in dependence on consciousness · the four wisdoms comprising the three bodies).
• Buddhabhūmi-śāstra (佛地經論). By Bandhuprabha et al., trans. Xuanzang. T26, no. 1530《佛地經論》Buddhabhūmi-śāstraT26, No. 1530View on CBETA online reader ↗. Fascicle 1 (the buddha-ground's five dharmas = the pure dharma-realm and the four wisdoms); fascicle 3 (the four wisdoms by definition · the equality wisdom establishing the non-abiding nirvāṇa).
• Mahāyāna-saṃgraha (root text, 攝大乘論本). By Asaṅga, trans. Xuanzang. T31, no. 1594《攝大乘論本》(玄奘譯)Mahāyānasaṃgraha (Xuanzang tr.)T31, No. 1594View on CBETA online reader ↗. Fascicle 3, "The Wisdom That Is the Fruit of That" (the four wisdoms' mastery · by reason of turning the aggregate-of-consciousness basis · the three-body frame).

Modern Scholarship

(This paper cites no modern scholarship; the argument rests entirely on Buddhist primary sources, following the open-source spirit of "return to the source." The interdisciplinary-convergence section having been cut, no corresponding modern literature appears.)

Sūtra & Śāstra Index

Point	Source	CBETA id
The four wisdoms in full and by definition (great-mirror · equality · observation · accomplishing)	Cheng weishi lun fasc. 10	T31n1585《成唯識論》Vijñaptimātratā-siddhi-śāstraT31, No. 1585View on CBETA online reader ↗_p0056a12
The four wisdoms by definition · the equality wisdom establishing the non-abiding nirvāṇa (corroboration)	Buddhabhūmi-śāstra fasc. 3	T26n1530《佛地經論》Buddhabhūmi-śāstraT26, No. 1530View on CBETA online reader ↗_p0302a19
The buddha-ground's five dharmas = the pure dharma-realm and the four wisdoms	Buddhabhūmi-śāstra fasc. 1	T26n1530《佛地經論》Buddhabhūmi-śāstraT26, No. 1530View on CBETA online reader ↗_p0291b15
Turning the eight consciousnesses into the four wisdoms (eighth → mirror · seventh → equality · sixth → observation · first-five → accomplishing) · wisdom turns in dependence on consciousness	Cheng weishi lun fasc. 10	T31n1585《成唯識論》Vijñaptimātratā-siddhi-śāstraT31, No. 1585View on CBETA online reader ↗_p0056b02
The four wisdoms comprise the three bodies (mirror → self-nature · middle two → enjoyment · accomplishing → transformation · one position)	Cheng weishi lun fasc. 10	T31n1585《成唯識論》Vijñaptimātratā-siddhi-śāstraT31, No. 1585View on CBETA online reader ↗_p0058a08
The four wisdoms' mastery · by reason of turning the aggregate-of-consciousness basis (three-body frame)	Mahāyāna-saṃgraha fasc. 3	T31n1594《攝大乘論本》(玄奘譯)Mahāyānasaṃgraha (Xuanzang tr.)T31, No. 1594View on CBETA online reader ↗_p0149c06

Series Cross-Reference Index

• ★ TATHAGATA-P03, "Mastery Appearing as Three Bodies" (the baton passed): P03 set the three bodies as the mastery's manifestation-structure and handed the underlying four wisdoms to this paper; this paper sets the four wisdoms as the cognitive engine of the three bodies — the three bodies (manifestation-structure) are accomplished by the four wisdoms (cognitive structure). The three bodies are "what it appears as," the four wisdoms "by what cognition it appears."
• ★ TATHAGATA-P01, "The Ground Where Naming Is Full" · TATHAGATA-P02, "Two Sets of Ten Masteries" (the frame): this paper's "the four wisdoms are turned, not spiritual cognitions acquired" carries forward the Attainment axis's constant keynote — name (the ten epithets, P01) · body (the three bodies, P03) · wisdom (the four wisdoms, this paper) are all aspects of the buddha-fruit mastery's "turning / severing / manifesting," not things acquired from outside; P02's judgment that the fruit-level is not the causal-level brightened is confirmed here too (the four wisdoms are accomplished only by the fruit-level transformation of the basis fulfilled).
• TATHAGATA-P05, "The Ten Powers, Four Fearlessnesses, Eighteen Distinctive Dharmas" (forthcoming · the four wisdoms' function): this paper establishes the four wisdoms' substance and provenance (turning consciousness into wisdom); the four wisdoms' function — especially the observation wisdom's teaching and resolving of doubts, the accomplishing wisdom's transformative function, and the fruition-virtues of the ten powers, four fearlessnesses, eighteen distinctive dharmas unfolded from them — is handed to P05 onward.
• TATHAGATA-P10, "The Ultimate Non-Abiding Nirvāṇa: The Terminus of Both Axes" (closing the division): this paper's cited "the equality wisdom establishes the buddha-ground's non-abiding nirvāṇa" (the Buddhabhūmi-śāstra) is gathered up at P10 — the relation of great loving-kindness and compassion (the equality wisdom) to the non-abiding nirvāṇa is concluded there.

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Paper: TATHAGATA-P04 · 轉識成智 · The Mastery of the Tathāgata · Part 3 · The Four Wisdoms Author: 釋慧鏡 (Shi Huijing) · Project: 指月 / Pointing-at-the-Moon · Series: The Attainment Signatures（證 自在簽名） License: CC BY-NC-SA 4.0 CBETA collation: 全文引用均依 CBETA 電子佛典核校（《成唯識論》T1585、《佛地經論》T1530、《攝大乘論本》T1594）。Pāli 引文採 PTS reference 雙軌標示（本分區為大乘，無 Pāli 雙軌義務）。 Repository: https://github.com/pointing-at-the-moon/attainment-signatures

Footnotes

1. Cheng weishi lun, fascicle 10 (the ultimate stage), T31n1585《成唯識論》Vijñaptimātratā-siddhi-śāstraT31, No. 1585View on CBETA online reader ↗_p0056a12. By Dharmapāla et al., trans. Xuanzang. Listing the four wisdom-associated mind-classes of the buddha-ground (great-mirror · equality · observation · accomplishing) with their definitions. CBETA-collated. ↩

2. Buddhabhūmi-śāstra, fascicle 3, T26n1530《佛地經論》Buddhabhūmi-śāstraT26, No. 1530View on CBETA online reader ↗_p0302a19. By Bandhuprabha et al., trans. Xuanzang. Defining the four wisdoms one by one (the great-mirror wisdom free of grasped-and-grasper discrimination; the equality wisdom regarding self and other as equal, establishing the buddha-ground's non-abiding nirvāṇa; the observation wisdom freely teaching and resolving doubts in the assembly; the accomplishing wisdom manifesting transformations throughout the ten directions), confirming the Cheng weishi lun's definitions. ↩

3. Buddhabhūmi-śāstra, fascicle 1, T26n1530《佛地經論》Buddhabhūmi-śāstraT26, No. 1530View on CBETA online reader ↗_p0291b15. Taking the pure dharma-realm together with the four wisdoms as the buddha-ground's "five dharmas" (the very five dharmas of P03's "the five-fold nature comprising the three bodies"), agreeing with the Cheng weishi lun's items of the four wisdoms. ↩

4. Cheng weishi lun, fascicle 10 (the ultimate stage), T31n1585《成唯識論》Vijñaptimātratā-siddhi-śāstraT31, No. 1585View on CBETA online reader ↗_p0056b02. "This turns the defiled eighth, seventh, sixth, and fifth consciousness-associated classes, attained in order" — marking the eighth → great-mirror, seventh → equality, sixth → observation, first-five → accomplishing; "though wisdom is not consciousness, it turns in dependence on consciousness," "at the untainted stage wisdom is strong and consciousness weak," "to urge beings to rely on wisdom and discard consciousness, it is said 'attained by turning the eight consciousnesses.'" The root verdict of turning consciousness into wisdom. ↩

5. Cheng weishi lun, fascicle 10 (the ultimate stage), T31n1585《成唯識論》Vijñaptimātratā-siddhi-śāstraT31, No. 1585View on CBETA online reader ↗_p0058a08. The four wisdoms comprise the three bodies: the great-mirror-wisdom class (turning away the store-consciousness) comprises the self-nature body, the middle two wisdom-classes (equality, observation) the enjoyment-body, the last wisdom-class (accomplishing) the transformation-body. This is "one position" of the treatise, with another held alongside. ↩

6. Mahāyāna-saṃgraha (root text), fascicle 3, "The Wisdom That Is the Fruit of That, part 11," T31n1594《攝大乘論本》(玄奘譯)Mahāyānasaṃgraha (Xuanzang tr.)T31, No. 1594View on CBETA online reader ↗_p0149c06. By Asaṅga, trans. Xuanzang. Within the three-body frame listing "the mastery of the mirror, equality, observation, and accomplishing wisdoms, by reason of turning the basis that is the aggregate of consciousness" — the four wisdoms are the wisdom-mastery, grounded in turning the aggregate-of-consciousness basis. (The opening three-body frame is at T31n1594《攝大乘論本》(玄奘譯)Mahāyānasaṃgraha (Xuanzang tr.)T31, No. 1594View on CBETA online reader ↗_p0149a18, cited in P03.) ↩