Dharma · AI Companion

六識界

ṣaḍ-vijñāna-dhātu

六识界即眼、耳、鼻、舌、身、意六种识界,于十八界中以自性建立。AI-generated

Type ViewDifficulty IntermediateTruth-level span I · dependent arising ⇢ II · emptinessInitial AI estimate · evolves with use

十八界法数于有部立为实有法(1),大乘读为缘生无自性(2);心经『无眼界乃至无意识界』属遮破,依 PP3 不升至 3

A Contemporary ReadingAI-generated

What This Concept Is Saying

The six consciousness-elements—六識界 (*ṣaḍ-vijñāna-dhātu*)—are:

1. 眼識界 (*cakṣur-vijñāna-dhātu*), the eye-consciousness-element: the discernment of visible form and color. 2. 耳識界 (*śrotra-vijñāna-dhātu*), the ear-consciousness-element: the discernment of sound. 3. 鼻識界 (*ghrāṇa-vijñāna-dhātu*), the nose-consciousness-element: the discernment of odor. 4. 舌識界 (*jihvā-vijñāna-dhātu*), the tongue-consciousness-element: the discernment of taste. 5. 身識界 (*kāya-vijñāna-dhātu*), the body-consciousness-element: the discernment of tangible qualities. 6. 意識界 (*mano-vijñāna-dhātu*), the mental-consciousness-element: the discernment of mental objects, while also being capable of taking the entire field of the preceding senses as its object.

Here “consciousness,” 識 (*vijñāna*), primarily means discriminative knowing or discernment, 了別: the occurrence in which a particular kind of object becomes manifest as known. It does not mean a permanent inner observer watching experience from behind the senses.

Their place within the eighteen elements

The six consciousness-elements belong to the larger framework of the eighteen elements, 十八界 (*aṣṭādaśa-dhātu*). That framework analyzes experience into three groups:

| Six faculties | Six objects | Six consciousnesses | |---|---|---| | eye | visible forms | eye-consciousness | | ear | sounds | ear-consciousness | | nose | odors | nose-consciousness | | tongue | tastes | tongue-consciousness | | body | tangible objects | body-consciousness | | mind | mental objects | mental consciousness |

This threefold structure matters. Seeing is not explained as “a self looks out through the eyes.” It occurs dependently: there is a functioning eye faculty, a visible object, and the arising of eye-consciousness. The same pattern applies to hearing, smelling, tasting, bodily sensing, and mental knowing.

The *Yogācārabhūmi-śāstra* (《瑜伽師地論》) states:

「如眼與色為緣,眼識由此生起,以眼為所依,於色為所緣,即此眼識說名眼識界。如是餘各各差別應知。」

In sense: with the eye and visible form as conditions, eye-consciousness arises; it depends upon the eye and takes visible form as its object. It is therefore called the eye-consciousness-element. The remaining consciousnesses are to be understood according to their respective conditions.

The point is neither that consciousness exists by itself nor that it is reducible to a physical organ. An eye may be present, yet without a suitable object, light, attention, and other supporting conditions, a particular visual cognition does not arise. Conversely, an object does not somehow “contain” the consciousness by which it is seen. Consciousness is an event within a conditioned relationship.

What each consciousness does—and does not do

Eye-consciousness discerns the visible: color and form. In ordinary experience we immediately say, “I see my colleague looking annoyed.” Strictly analyzed, however, the visible configuration is the object of eye-consciousness. Recognition of “my colleague,” interpretation of the expression, recollection of yesterday’s dispute, and the judgment “annoyed” involve mental consciousness together with associated mental factors. Eye-consciousness should therefore not be inflated into the whole act of interpretation.

Ear-consciousness discerns sound. It makes an audible event present; understanding a sentence, remembering who spoke, and deciding whether the words were insulting involve further mental activity.

Nose-consciousness discerns odor. “A smell is present” and “this is the perfume my former partner wore” are not identical moments of cognition. The latter includes recognition, memory, association, and often emotion.

Tongue-consciousness discerns taste. It is not itself the preference “I love this” or the plan “I should order another one.” Those are additional mental responses.

Body-consciousness discerns tangible qualities such as pressure, temperature, hardness, softness, motion, and bodily discomfort or ease. It must not be reduced to “awareness of my body as an image.” The image of one’s body may be visual or conceptual; body-consciousness specifically concerns tangible objects apprehended through the bodily faculty.

Mental consciousness discerns mental objects, 法 (*dharma*): memories, concepts, images, intentions, emotions as mentally apprehended, and the contents presented by the preceding senses. The *Yogācārabhūmi* says:

「意識所緣,遍以一切眼色乃至意法為境界。」

That is, mental consciousness can range over the entire field from eye and visible form through mind and mental objects. This is why it is described as pervasive in its operation, 遍行, and placed last in the conventional sequence.

“Pervasive” does not mean omniscient. It means that mental consciousness can take up what has appeared through any of the five senses and then remember it, name it, compare it, imagine its absence, predict its return, or construct a story about it. The eye does not worry about tomorrow’s image; mental consciousness does.

Why they are called six distinct “elements”

Here 界 (*dhātu*) means a distinguishable domain or constituent of experience, not a material element and not a cosmic substance. According to the supplied *Yogācārabhūmi* account, the six consciousness-elements are established through their distinct own-character, 自性:

「六識界自性故建立,所餘諸界唯依建立。」

This does not grant them independent existence. It means that, within the analytic framework of the eighteen elements, the consciousnesses are distinguished by the particular modes of discernment that arise through different conditions. Eye-consciousness is not ear-consciousness; the discernment of color is not the discernment of sound.

The treatise illustrates their naming with fire. Fire burning grass is called “grass fire”; fire dependent on cow dung, chaff, or kindling receives corresponding names. The analogy is precise but limited. It shows that a process receives a differentiated name according to the conditions upon which it depends. Thus consciousness dependent on eye and visible form is called eye-consciousness; consciousness dependent on ear and sound is called ear-consciousness.

The analogy must not be turned into the idea that there is one permanent, hidden consciousness-substance moving from sense to sense like a flame carried between lamps. Its intended force is conditional differentiation: with different supports and objects, distinct modes of consciousness arise.

This also explains the apparently paradoxical claim that the six consciousness-elements are established “by their own-character,” while still depending on faculties, objects, and accompanying mental factors. Distinctness is not independence. A wave has a recognizable form without existing apart from water, wind, gravity, and the surrounding sea.

Rapid arising, not a single continuous spectator

The *Yogācārabhūmi* emphasizes that these consciousnesses change swiftly across moments, instants, hours, and days. They arise supported by varying conditions and accompanied by different mental factors. What appears introspectively as one uninterrupted “stream of me being conscious” is, under analysis, a changing succession:

visible cognition, sound cognition, a thought about the sound, bodily discomfort, a memory, another visual cognition, an intention to act.

The ordinary sense of continuity is not simply denied; it is explained. There is causal succession and continuity, but no need to posit an unchanging witness standing outside that succession.

This is where the six consciousness-elements enter the path of liberation. The teaching is not principally a primitive psychology chart. It trains us to replace the reflexive formula—“I am the one who sees, hears, thinks, and suffers”—with a more careful observation:

Given these conditions, this kind of consciousness has arisen.

That shift does not make life impersonal in the sense of cold or meaningless. It makes experience less possessive. If seeing, hearing, remembering, and judging are conditioned events, they need not all be appropriated as “me” and “mine.” That creates room between an occurrence and the craving, aversion, or self-story built upon it.

Six consciousness-elements and the consciousness aggregate

The six consciousness-elements overlap in content with the consciousness aggregate, 識蘊 (*vijñāna-skandha*), but the two frameworks emphasize different questions.

The five aggregates analyze the person and appropriated experience as form, feeling, perception, formations, and consciousness. There the consciousness aggregate is seen in relation to the other four aggregates and is contemplated as impermanent, conditioned, and not-self.

The eighteen elements map the structure of cognition through faculty, object, and consciousness. Their emphasis is relational: through which faculty, with what object, does which mode of discernment arise?

They are not rival theories. The aggregate framework helps dismantle attachment to “the person”; the element framework exposes the conditioned architecture of “the world I experience.” Both serve the same liberating insight: nowhere in this dependently arisen process is an autonomous controller to be found.

A Walk-Through in Everyday Life

Imagine an exhausted commuter standing in a crowded train and looking at a phone.

1. A notification appears

A bright red icon appears on the screen.

- The eye faculty is the support. - Color and shape are the visible object. - The bare discernment of that visible presentation is eye-consciousness.

The common mapping error is to put the entire thought—“My manager has sent another unreasonable request”—inside eye-consciousness. The eyes do not see “unreasonable.” Eye-consciousness discerns the visible display. Recognition of the app, reading the words, connecting them with one’s manager, and judging the request are operations in which mental consciousness and associated mental factors participate.

2. The phone makes a sound

A chime is heard.

- The ear faculty serves as support. - The sound is the object. - Ear-consciousness arises as auditory discernment.

Almost instantly, mental consciousness identifies it: “work message.” Anxiety may follow. But the anxiety is not ear-consciousness, and the meaning “work message” is not contained in the sound as sound. This distinction is practically important. What occurred first was an audible event; the personal world built around it arrived through further conditioned processes.

3. A smell enters the carriage

Someone nearby opens a container of strong food.

- The nose faculty and odor condition nose-consciousness. - Mental consciousness recognizes the smell and recalls an unpleasant journey. - Aversion arises: “Why would anyone eat that here?”

The smell is not identical with the moral judgment. Failing to distinguish them makes the judgment seem as immediate and objective as the odor itself.

4. Coffee remains on the tongue

The commuter notices the bitter aftertaste of coffee.

- The tongue faculty and taste condition tongue-consciousness. - Mental consciousness compares this taste with a preferred coffee and thinks, “The café downstairs is getting worse.”

Tongue-consciousness discerns taste; it does not write restaurant reviews. Preference, comparison, and complaint belong to a wider mental process.

5. The body is pressed and fatigued

A bag presses against the shoulder; the train sways; the legs feel heavy.

- The body faculty encounters pressure, movement, and other tangible qualities. - Body-consciousness discerns these tactile events. - Mental consciousness gathers them under the thought, “I cannot bear this commute anymore.”

This does not mean the discomfort is unreal. It means the tactile event, its unpleasant affective tone, and the sweeping conclusion about one’s life should not be collapsed into one indivisible thing. Analysis can reveal several places where reactivity is added.

6. The mind builds a complete drama

The commuter opens the message and thinks:

“My manager does not respect me. This always happens. If I refuse, my career is finished. If I accept, my evening is ruined.”

Now mental consciousness ranges across multiple fields. It takes the visible words as an object, remembers earlier exchanges, imagines a future meeting, notices bodily tension, and constructs possible outcomes. Its pervasive range explains why a ten-second notification can become an hour-long inner world.

But mental consciousness is still conditioned. Its story depends on the message, prior memories, habits of interpretation, present fatigue, fear about employment, and associated mental factors. Because the story is conditioned, it is neither meaningless nor infallible. It deserves examination rather than automatic obedience.

7. A moment of practice

The commuter pauses:

- “Visible form has been seen.” - “Sound has been heard.” - “Pressure is being felt.” - “A memory has arisen.” - “A prediction is being constructed.” - “Aversion is present.”

This is not verbal denial—one need not mechanically recite labels. The essential move is to distinguish what is occurring from the claim that an unchanging self owns and controls it all.

The message may still require a firm response. Buddhist analysis does not recommend passivity. It helps prevent a practical response from being dictated by an unexamined chain of identification: “This thought is mine; therefore it is true; because it is true, I must react immediately.” One can recognize the conditions, allow agitation to settle, and then answer with greater clarity.

The same walk-through applies in an intimate relationship. A partner’s facial expression is first a visible object; the thought “they no longer love me” is a mental construction, not something eye-consciousness literally saw. Their tone is heard; the intention attributed to the tone is mentally inferred. The inference may eventually prove correct, but it remains an inference. Seeing this distinction makes honest conversation possible: “When I heard that tone, fear arose, and I interpreted it this way”—rather than “I directly perceived your contempt.”

Why Contemporary People Need It

Contemporary life is organized around capturing consciousness. Interfaces compete for the eye, alerts recruit the ear, food and consumer industries refine taste and odor, and platforms feed mental consciousness an uninterrupted mixture of memory, comparison, outrage, anticipation, and fantasy.

The teaching of the six consciousness-elements offers neither technophobia nor a retreat into numbness. It supplies a diagnostic map.

It separates input from interpretation

Much avoidable suffering comes from treating a constructed meaning as though it were directly given by the senses. We do not merely see a delayed reply; we “see” rejection. We do not merely hear criticism; we “hear” proof of worthlessness. We do not merely feel a rapid heartbeat; we “feel” catastrophe approaching.

The six-consciousness analysis lets us ask:

- What was actually visible, audible, or tangible? - What did mental consciousness recognize or infer? - What memory or habit assisted that inference? - What craving or fear then appropriated it?

This does not guarantee that every inference is false. It makes inference visible as inference—and therefore open to wisdom.

It reveals how attention becomes a world

An algorithm does not need to manufacture a permanent self in order to influence us. It needs only to arrange objects and conditions repeatedly: an image, a sound, a provocative sentence, a remembered preference, another image. Consciousness arises accordingly; feeling, recognition, intention, and craving may follow.

The Buddhist analysis and computational accounts of attention should not be equated. “Consciousness” remains contested in neuroscience and philosophy, and no current scientific model settles the metaphysical or liberating claims of Buddhism. Nevertheless, the comparison can illuminate a limited point: what appears in awareness depends strongly upon conditions, selection, and repeated exposure. An engineered stream of objects can train habits of cognition without there being a little executive inside consciously choosing every transition.

Recognizing this gives ethical weight to the design of one’s environment. Turning off notifications, leaving the phone outside the bedroom, or choosing what to read is not merely productivity advice. It is the deliberate shaping of conditions under which particular consciousnesses and reactions arise.

It loosens identification with thought

Because mental consciousness is last and pervasive, it easily impersonates a sovereign. It comments on the other senses, narrates the past, simulates the future, and then announces: “I am the one running everything.”

Yet the six-element analysis shows mental consciousness arising with objects and conditions just as sensory consciousness does. A thought appears as a mental object; mental consciousness discerns it. The mere occurrence of the thought does not make it a command, a prophecy, or a self.

This is especially valuable when shame, anger, obsessive rehearsal, or fear is active. “A hostile thought has arisen” is neither repression nor indulgence. It acknowledges the event without converting it into “I am a hostile person” or “I must do what this thought proposes.”

It places sense restraint inside the path of liberation

Sense restraint, 根律儀 (*indriya-saṃvara*), is sometimes misunderstood as refusing to see, hear, or enjoy anything. More deeply, it means guarding the encounter so that craving, aversion, and delusion do not seize upon it unchecked.

One learns to recognize:

1. a faculty and object have come together; 2. a corresponding consciousness has arisen; 3. additional feeling, recognition, and intention are developing; 4. appropriation—“for me,” “against me,” “this will complete me”—is beginning.

The goal is not to stop consciousness from functioning. Liberation is not sensory anesthesia. It is freedom from ignorance and compulsive appropriation in the midst of seeing, hearing, sensing, and thinking.

At a deeper level, this analysis supports insight into impermanence, 無常 (*anitya*), unsatisfactoriness, 苦 (*duḥkha*), and not-self, 無我 (*anātman*). Each consciousness depends on conditions, changes rapidly, and cannot be commanded simply by wishing: “Let only pleasant sights appear; let no painful thought arise; let consciousness remain exactly as I choose.” What is conditioned and unstable cannot serve as an invulnerable self or lasting refuge.

This is the place of the six consciousness-elements within the whole path. Ethical discipline reduces the coarse conditions that agitate consciousness. Collectedness steadies its rapid movement. Wisdom examines faculty, object, consciousness, and appropriation without discovering a permanent owner among them. The analysis culminates not in better classification but in disenchantment, relinquishment, and freedom.

Common Misreadings and Clarifications

“The six consciousnesses are six souls inside one person”

No. They are six conditioned modes of discernment, differentiated through their supports and objects. None is an enduring entity. Their plurality rejects an overly simple, unitary spectator; it does not replace one soul with six smaller souls.

“Consciousness produces the external world”

That conclusion does not follow from this teaching. The eighteen-element analysis distinguishes faculties, objects, and consciousness. The supplied *Yogācārabhūmi* material explains how consciousness arises dependent upon support, object, and associated conditions; it should not be casually converted into the slogan “everything is created by my mind.”

Whatever broader interpretations may be developed in particular Buddhist philosophical systems, this passage’s immediate lesson is conditioned cognition—not private omnipotence.

“Eye-consciousness means everything involved in seeing”

This is too broad. Eye-consciousness discerns the visible object. Recognition, naming, emotional appraisal, memory, and narrative require additional processes, prominently mental consciousness and associated mental factors. The same clarification applies to all five sensory consciousnesses.

“Mental consciousness is just rational thinking”

It is much wider. It includes the discernment of thoughts, memories, images, intentions, concepts, and other mental objects, and it can take up material delivered through any of the five senses. Daydreaming, worrying, remembering a melody, imagining a face, and interpreting bodily pain all involve its range.

Nor is mental consciousness necessarily wise. Its breadth gives it extraordinary flexibility, but also the ability to elaborate a momentary event into craving, prejudice, or fantasy.

“Body-consciousness means intellectual awareness of my body”

No. Body-consciousness discerns tangible qualities through the bodily faculty. Thinking “my posture is unhealthy” is mental consciousness working with bodily information and concepts. The tactile pressure in the back and the conceptual diagnosis of posture must not be conflated.

“If consciousness depends on conditions, experience is unreal”

Conditioned does not mean nonexistent. Pain hurts, music is heard, and decisions have consequences. The claim is that these events do not exist independently or under the control of a permanent self.

A rainbow is condition-dependent without being sheer nothingness. Because it depends upon conditions, it appears when those conditions converge and disappears when they change. Consciousness is to be examined in this spirit: experientially present, causally consequential, but neither self-grounded nor permanently ownable.

“Established by its own-character” means independently existing

This is one of the most serious possible errors. In the *Yogācārabhūmi* account, the phrase explains how the six consciousness-elements are distinguished within the eighteen-element taxonomy. Each has a differentiated mode of discernment arising with its respective conditions.

The same text explicitly describes consciousness as relying on faculties, taking objects, and being accompanied by mental factors. Therefore “established by its own-character” cannot responsibly be read as “existing without conditions.” Again: distinctness is not independence.

“The fire analogy proves one consciousness-substance travels among the senses”

The analogy concerns conditional naming and differentiation. Fire is called grass fire, dung fire, or chaff fire according to its fuel; consciousness is named according to its supporting faculty and object. Pressing the comparison into a theory of an unchanging consciousness-substance would contradict the text’s emphasis on rapid, conditioned variation.

“The order eye, ear, nose, tongue, body, mind is a hierarchy of spiritual value”

Not here. The *Yogācārabhūmi* gives practical reasons connected with ordinary activity and range. Vision has an especially broad sphere in worldly activity: seeing forms, identifying people, locating directions, and participating in spectacles and entertainment. The operating ranges of the following faculties are described as progressively narrower, while mind is placed last because it ranges throughout the fields of the others.

This is an order of exposition and function, not a claim that people who rely more on vision are spiritually superior.

“Understanding the map is itself liberation”

A map can remain another possession of mental consciousness: “I know the eighteen elements; therefore I understand the mind.” The liberating work begins when the framework is used during actual seeing, hearing, feeling, and thinking.

When praise is heard, can hearing be distinguished from intoxication with status? When criticism is read, can visible words be distinguished from the self condemned by one’s inner narrative? When fear arises, can it be known as a conditioned mental event without becoming an identity?

The six consciousness-elements ultimately teach a quiet but radical lesson: experience is intimate, yet no permanent owner of experience can be isolated. Seeing occurs, but no independent seer is found apart from the conditions of seeing. Thinking occurs, but no sovereign thinker stands outside the conditioned stream and commands it completely.

At first, this may sound like a loss. In practice, it is an opening. If every sight, sound, sensation, and thought need not be made into “me” or “mine,” then experience can be met more directly—and released more gently. The sixfold analysis has fulfilled its purpose when it ceases to be merely a classification and becomes wisdom at the very point where a world is arising.

Canonical EntryAI-generated

定义与核心要义

六识界(ṣaḍ-vijñāna-dhātu)即眼识、耳识、鼻识、舌识、身识、意识六种识界,于十八界架构中以自性独立建立,不同于其余诸界依所依、所缘、助伴关系而立。

主要阐述

《瑜伽师地论》于十八界架构中,以「六识界」统摄眼识乃至意识六种识界,并说明何以唯有六识界依其自性建立,而其余诸界则依所依、所缘与助伴关系建立。六识界在念、瞬息、须臾、日夜等不同时位中速疾转变,托于各种因缘,依眼等根、缘色等境,并以诸心所为助伴,呈现非一而众多的种种生起;相较之下,眼等其余诸界自初生后即以相似自性展转相续。此种识能随缘生起差别自性的特点,是六识界获得独立自性建立的要义。

《瑜伽师地论》又指出,六识各由其所依而得名:眼与色为缘,眼识由此生起,遂名「眼识」;其余各识乃至意识亦复如此。论中以火依草木、牛粪、糠札等不同燃料而分别称为草火、牛粪火、糠火、札火作譬,表明同一识类藉不同因缘,便有种种差别自性与名称。六识之「界」因此并非离开根、境、心所而孤立建立,而是在识为中心的依托、缘取与助伴关系中安立。

就依缘关系而言,《瑜伽师地论》说识与根具有「同一处义」,故根名为「依」;境界具有「所缘义」,故亦名为「依」。六识的差别,正由所依与所缘的差别而建立:眼识了别色境,其余诸识各自了别自己的境界;意识则能以一切眼、色乃至意、法为境界。此处所用的核心表述是「眼等六识」「六识界」与「诸识」,并以「了别」说明识对境界的作用;尤其意识所缘遍及前五根境以及意、法,显示其境界范围不同于前五识。

在六种次第的安排上,《瑜伽师地论》列举多重因缘:依所行差别与数数活动,先说眼等;又依世间俗事、喜乐差别、严饰差别、作业饮食习欲,以及各根作业范围的广狭而次第宣说。眼能见色、辨人、知方所及受舞乐等喜乐,作业最广;耳、鼻、舌、身的作业依次较狭。意则因「遍行」之性,置于最后宣说。因此,六识的排列不仅呈示名称次序,也与各根的世间活动、功能差别及意的遍行性相应。

不同部类与译本的表述差异

本部类资料仅出自《瑜伽师地论》一部,故无跨部派或跨经的部类差异,以及异译本之间的用语分歧可资比较。唯《瑜伽师地论》自身在不同段落对六识界的称呼略见不同:或总称「六识界」「六识身」,或分称「眼等六识」「诸识」,或单称「识界」以强调其作为十八界之一的独立地位。对于各识的具体名称,论中皆作「眼识、耳识、鼻识、舌识、身识、意识」,并无五识另名或意识异称之差异。

与相关概念的关系

六识界与十八界中其他十二界(眼界、耳界、鼻界、舌界、身界、意界等六根界,及色界、声界、香界、味界、触界、法界等六境界)共同构成十八界的完整架构。据《瑜伽师地论》,六识界不同于六根界与六境界:根与境系依其自初生后即相似相续的相续性而立界,六识界则依其随缘生起差别自性的转变性而立界。此外,六识界亦与五蕴中的「识蕴」概念相通,然《瑜伽师地论》以「界」(dhātu)为单位立说,更侧重其作为因缘和合依托的层面,与就受、想、行、识聚合而说的「识蕴」立论角度有所不同。

代表性原文引用

- 「六识界自性故建立,所余诸界唯依建立。」(《瑜伽师地论》) - 「如眼与色为缘,眼识由此生起,以眼为所依,于色为所缘,即此眼识说名眼识界。如是余各各差别应知。」(《瑜伽师地论》) - 「譬如火依草木、牛粪、糠札等差别而转,名草火、牛粪火、糠火、札火。」(《瑜伽师地论》) - 「意识所缘,遍以一切眼色乃至意法为境界。」(《瑜伽师地论》) - 「眼能见色、辨人、知方所、受舞乐等喜乐,作业最广;耳、鼻、舌、身作业依次渐狭;意以遍行故,最后宣说。」(《瑜伽师地论》)

By SutraAI-generated

瑜伽師地論T1579 · 瑜伽部

《瑜伽師地論》於十八界的架構中,以「六識界」統攝眼識、耳識、鼻識、舌識、身識、意識六種識界,並說明何以唯有六識界依其自性建立,而其餘諸界則依所依、所緣與助伴的關係建立。六識界在念、瞬息、須臾、日夜等不同時位中速疾轉變,託於各種因緣,依眼等根、緣色等境,並以諸心所為助伴,呈現非一而眾多的種種生起;相較之下,眼等其餘諸界自初生後,即以相似自性展轉相續。此種識能隨緣生起差別自性的特點,是六識界獲得獨立自性建立的要義。

《瑜伽師地論》又指出,六識各由其所依而得名:眼與色為緣,眼識由此生起,遂名「眼識」;其餘各識乃至意識亦復如此。論中以火依草木、牛糞、糠札等不同燃料而分別稱為草火、牛糞火、糠火、札火作譬,表明同一識類藉不同因緣,便有種種差別自性與名稱。六識之「界」因而不是離開根、境、心所而孤立建立,而是在識為中心的依託、緣取與助伴關係中安立。

就依緣關係而言,《瑜伽師地論》說識與根具有「同一處義」,故根名為「依」;境界具有「所緣義」,故亦名為「依」。六識的差別,正由所依與所緣的差別而建立:眼識了別色境,其餘諸識各自了別自己的境界;意識則能以一切眼、色乃至意、法為境界。此處所用的核心表述是「眼等六識」「六識界」與「諸識」,並以「了別」說明識對境界的作用;尤其意識所緣遍及前五根境以及意、法,顯示其境界範圍不同於前五識。

在六種次第的安排上,《瑜伽師地論》列舉多重因緣:依所行差別與數數活動,先說眼等;又依世間俗事、喜樂差別、嚴飾差別、作業飲食習欲,以及各根作業範圍的廣狹而次第宣說。眼能見色、辨人、知方所及受舞樂等喜樂,作業最廣;耳、鼻、舌、身的作業依次較狹。意則因「遍行」,置於最後宣說。因此,六識的排列不僅呈示名稱次序,也與各根的世間活動、功能差別及意的遍行性相應。

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