The Sixth Consciousness — The Only Mind That Can Hold Up a Mirror

3.6 The Sixth Consciousness — The Only Mind That Can Hold Up a Mirror

The last chapter left us with a question. The ālaya-vijñāna cannot see itself (it does not discriminate at all). Manas cannot see itself (its whole job is to manufacture an illusion). The first five consciousnesses cannot see themselves (they have no such depth). So then—who can see all of this?

Only one—the sixth consciousness, the mind-consciousness (mano-vijñāna).

The protagonist of this chapter is that single mind, the only one that can hold up a mirror. It can notice "I am angry." It can notice "the judgment I just made was slanted." It can even notice "manas just automatically threw up another feeling of 'me.'" This capacity to turn around and look back is utterly distinctive—among the eight consciousnesses, only the sixth consciousness possesses it.

But that same consciousness is also the source of all weighty karma. The second of the verses on the eight consciousnesses points to this paradox:

In activating body and speech, it alone is supreme; attracting and fulfilling karma, it draws forth the power of karmic consequences.

Among the eight consciousnesses, only the sixth can truly set bodily karma (action) and verbal karma (speech) in motion, and lay down the attracting karma that decides where one's next birth will be, along with the fulfilling karma that fixes its particular conditions. Manas creates no karma (it only grasps at self, it does not act). The ālaya-vijñāna creates no karma (it merely stores the fruits of past karma). The first five consciousnesses can produce only a faint sliver of good or evil—the one that really shoulders the weight of karma is the sixth consciousness.

How does a single sentence make it out of your mouth? The eye consciousness sees an expression (direct perception); the sixth consciousness instantly recalls (it remembers a similar situation from the past), then judges ("he's mocking me"); the mental factor of aversion arises, drives the mental factor of volition (deliberating, deciding, activating), which drives the tongue consciousness and the body consciousness, and out comes the sentence. The whole chain may run in under half a second, but the one in charge at every step is the sixth consciousness. That is exactly what "in activating body and speech, it alone is supreme" means—all eight consciousnesses take part, but only one calls the shot.

This is the paradox of consciousness: it is the only mind that can see the cage, and it is the chief builder of the cage. Practice means letting this same consciousness turn from builder into the one who takes the cage apart.

One Word—"Pervading": The Vast Range of Consciousness

The first verse states the essential nature of consciousness: "Three natures, three modes of cognition—pervading three objects."

Set consciousness against the other seven and the contrast is sharp. The ālaya-vijñāna can only be unobscured-and-neutral, can only operate by direct perception, can only take real objects. Manas can only be obstructed-and-neutral, can only be non-veridical, can only take composite objects. The first five run on direct perception alone and take only real objects.

The sixth consciousness alone pervades all three natures (wholesome, unwholesome, neutral), all three modes of cognition (direct perception, inference, and non-veridical cognition), and all three kinds of object (real, composite, and shadow-only). This "pervades everything" is not a heap of technical jargon—it means that consciousness is the most plastic of the eight. It can sink to the lowest (falling into non-veridical cognition in dreams, in confusion, in a scattered mind), and it can rise to the highest (in deep absorption, taking suchness as its object, giving rise to non-discriminating wisdom).

This is why the main theater of practice is here. The self-grasping of manas is too deeply rooted, the first five are too shallow, the ālaya-vijñāna is too deep; what can actually be adjusted is, above all, the sixth consciousness.

The object that consciousness takes is called dharma-objects. Dharma-objects include the kinds of form that fall outside the five faculties and five sense-objects, the mind, the mental factors, and even the unconditioned dharmas—they cover almost everything that can be known. The Madhyama Āgama has a wonderfully precise line: "The five faculties differ in their actions and in their domains, each receiving its own domain; the mental faculty receives all their domains, the mental faculty is their support." The eye only sees forms, the ear only hears sounds, each minds its own business; but consciousness can gather in the domains of all five faculties and then analyze, compare, recollect, and reason upon them. This is the vastness of consciousness.

Three Kinds of Discrimination—The Point Where Practice Enters

Yogācāra divides the discriminating function of consciousness into three kinds:

Self-nature discrimination: taking the object directly, without verbal concepts. The clear-and-distinct consciousness, in the first instant when it co-cognizes the real objects of the five senses together with the first five consciousnesses, is in this state.
Recollective discrimination: memory, recall. That flower from a moment ago, now remembered—this has already left direct perception behind and entered the operation upon time that belongs to consciousness alone.
Conceptual discrimination: inference, judgment, planning, imagining—the most powerful and most dangerous capacity of consciousness.

The first five consciousnesses have recollective discrimination but lack conceptual discrimination—they leave impressions, but they do not infer. Conceptual discrimination is the exclusive domain of consciousness.

⚠️ Here lies a common misreading: the idea that "conceptual discrimination" is itself a sin to be wiped out. It is not. Used rightly, conceptual discrimination is deliberation, reflection in accord with reality, the choosing of wholesome dharmas; used wrongly, it is fantasy, distortion, the making up of stories. Practice does not abolish the capacity to conceptualize; it turns that capacity around—from the direction of self, of craving, of aversion, toward the direction of accord with reality, of seeing as it truly is, of working for all beings.

The point where practice enters is extremely precise: between recollective discrimination and conceptual discrimination. You are stung by a remark—the ear consciousness directly takes in the sound (self-nature discrimination); consciousness at once recalls past experiences of being hurt (recollective discrimination); then it begins to infer "he must have done it on purpose," "he's always looked down on me" (conceptual discrimination)—the mental factor of aversion arises, and verbal karma follows.

The very moment you become aware that "I am conceptualizing right now," there opens the possibility of not being carried off by the conceptualizing. This is the precise landing point of 1.6's "awareness is the turning point"—awareness does not destroy the affliction; awareness gives you one more option, the option of not following it along.

The Five Faces of Consciousness

Consciousness is not a single state. Following the Supplementary Annotations to the Verses on the Eight Consciousnesses, it operates in five forms:

Clear-and-distinct consciousness—the ordinary waking state in which it co-cognizes the five sense-objects together with the first five consciousnesses, pervading all three modes; this is the face it wears through everyday life.
Independent consciousness in absorption—in meditative concentration, not arising together with the first five consciousnesses, taking the meditative object alone (the most subtle of forms, suchness, and the like); exclusively direct perception.
Independent scattered consciousness—when the mind is scattered, recollecting, imagining, and planning on its own, not co-cognizing with the first five; inference or non-veridical cognition.
Independent dream consciousness—the activity of consciousness within dreams, taking the images dreams throw up; exclusively non-veridical.
Disordered consciousness—in fever, under drugs, in mental illness, when the disturbed body throws consciousness into chaos so that "with a fever one sees blue as yellow."

Of these five forms, the independent consciousness in absorption is the one that matters most for practice—it has slipped free of the pull of the first five consciousnesses, and slipped free of scattered conceptualizing too, able to rest upon a single, simple object. Meditative absorption is not "having no thoughts"; it is consciousness turning from those four passive faces—clear-and-distinct, scattered, dreaming, disordered—into the active choice to rest upon one object.

The Spectator—The Laṅkāvatāra Sūtra's Verdict on Structure

The Laṅkāvatāra Sūtra has a famous verse that maps directly onto the eight-consciousness structure:

Mind is like the lead performer; mentation is like the supporting actor; the five consciousnesses are the troupe's companions; discriminating thought is the audience watching the show.

Mind (the ālaya-vijñāna) is the lead performer of the troupe; mentation (manas) is the supporting actor who plays along; the first five consciousnesses are the dancing companions—each of them faithfully acts out its own role. And the one sitting below the stage "watching" the performance is discriminating thought—that is, the discriminating function of the sixth consciousness.

The verse lays bare a structural fact: among the eight consciousnesses, only the sixth is "watching"; the other seven are all "performing." This is why consciousness alone can turn around and look, can be aware, can practice—because only the spectator can see the show.

But precisely because it is watching, it is also the easiest to be deceived by what it watches—mistaking the dependently-arisen performance for a real, independently-existing thing. The audience laughs, the audience weeps, the audience gets lost in the plot—these reactions are not caused by the stage; they come from the audience forgetting it is watching a play.

⚠️ Here we must avoid misreading the "spectator" as an independently existing "soul" or "true self." The watching function of the sixth consciousness is itself born of causes and conditions—the Śūraṅgama Sūtra states plainly that "the mental sense-base is unreal, fundamentally neither caused by conditions nor arising of its own nature." The spectator is not an entity; it is a function; and this function can be defiled (in the ordinary person's state) or purified (in the noble state). Practice is not finding that spectator; it is letting the watching function work as it truly is.

Interruption in Five States—Awareness Is Not Automatic

Consciousness is not running at every moment. The Cheng Weishi Lun lists five states in which it cuts out: birth in the Heaven of No-Thought, the no-thought absorption, the absorption of cessation, deep (dreamless) sleep, and deep unconsciousness. Apart from these, consciousness "constantly arises."

This pattern of interruption carries an important implication for practice: the power of awareness is not automatic and constant. The eighth consciousness is constant but does not deliberate; the seventh is both constant and deliberating but only grasps at self—neither of them cuts out, but neither of them is awareness. The sixth consciousness is the true bearer of awareness, but it interrupts, it gets clouded over, it tires.

So a good habit cannot be kept up by "staying clear and judging rightly at every single moment"—that can never last. What truly sustains practice is the power of the seeds that repeated perfuming forms in the ālaya-vijñāna. The seed theory of 1.7 and the perfuming-by-hearing of 3.4 come together here in one concrete practice: every act of awareness, every reflection in accord with reality, every recitation of the Buddha's name or watching of the breath, perfumes an uncontaminated seed into the storehouse; perfume enough of them, and even in the moments when the sixth consciousness is tired and slack, the seeds will sprout on their own and pull you back onto the path.

Transforming the Basis—Wondrous Observing Wisdom

The third verse sketches the endpoint of consciousness's practice:

Arising at the initial moment of the Joyful Ground; innate afflictions still manifest as active bonds and latent seeds; after the Far-Reaching Ground, purely uncontaminated; observing wisdom, perfectly luminous, illuminates the great chiliocosm.

At the first ground (the Joyful Ground), on seeing the path, the discrimination-arisen afflictive obstructions begin to be severed; but the innate obstructions remain, "bound" in their active manifestation and "asleep" in their seeds. At the fourth ground the active manifestation of innate identity-view is severed for good; before the seventh ground, contaminated and uncontaminated operate side by side; from the eighth ground (the Immovable Ground) on, consciousness is purely uncontaminated, and non-discriminating wisdom continues of itself without break.

At this point the sixth consciousness completes the transformation of its basis, turning into wondrous observing wisdom. The Cheng Weishi Lun gives this wisdom four core functions: it skillfully observes the self-characteristics and shared characteristics of all dharmas (observing, without obstruction and without omission, both the particular character and the common character of every dharma); it gathers in and holds all the dhāraṇī-gates and samādhi-gates (encompassing immeasurable retentions and concentrations); it teaches the Dharma without obstruction (saying to beings of every disposition exactly the one line that they, at this moment, can understand and use); and it cuts off doubt and brings benefit and joy (raining down the great rain of Dharma, cutting off all doubt, and bringing beings benefit).

The Avataṃsaka Sūtra has a famous line: "Mind is like a master painter, that can paint all the worlds." On the level of creating karma, this painter is consciousness: it paints world after world of "me," "him," "grasping," "rejecting"; but the very same painter, once turned into wondrous observing wisdom, paints instead the exactly-fitting Dharma, the exactly-fitting word, the exactly-fitting manifestation. It is not a new consciousness swapped in—it is the same consciousness, its function turned completely around.

3.6 has now laid out the full picture of the sixth consciousness—vast, able to watch, a maker of karma, and able to transform its basis. But every step of practice depends on contact at the level of the senses. In the next chapter, 3.7, we move to the very front line of the eight consciousnesses—the first five consciousnesses, the directness of the senses.