From the Aggregate to the Ground
How Buddhism travelled from the analysis of suffering to the recognition of primordial knowing
There is the story Buddhism tells about itself, and there is the story its own texts tell when you read them in order. They are not quite the same story. The difference between them is one of the most beautiful things in the history of human thought.
It begins in a deer park near Benares, with a man taking experience apart. Body, feeling, perception, formations, consciousness: five heaps, and in none of them anything that deserves to be called a self. It ends, many centuries later, in the high valleys of Tibet, with yogins sitting under an open sky who recognise that what knows was never born, never stained, never for one moment absent. The first teaching asks: what binds us? The last asks: what are we when nothing binds us?
This essay walks the road between those two questions, through the primary sources themselves. It will not pretend that the later teachings were hidden in the earlier ones, waiting to be unwrapped. Nor will it accuse the later masters of betrayal. It wants to see exactly where the ground moved, and to sit, without flinching, in the places where the tension still hums.
The Heap: Consciousness in the Earliest Teaching
In the Discourse on the Characteristic of Not-Self (Saṃyutta Nikāya 22.59), remembered as the second sermon the Buddha ever gave, five ascetics who had once walked away from him sit and listen as he takes their experience apart, piece by piece. Form, feeling, perception, formations, and finally consciousness, viññāṇa. Of each he asks three questions, quietly and relentlessly. Is it permanent or impermanent? Is what is impermanent suffering or ease? And is what is impermanent and suffering fit to be regarded thus: this is mine, this I am, this is my self?
Consciousness receives no special pleading. It stands in the line beside the body, as ordinary as a hand. By the end of the discourse, the text says, the minds of all five were freed.
Then there is Sāti. In the Greater Discourse on the Destruction of Craving (Majjhima Nikāya 38), a monk named Sāti, the fisherman's son, has convinced himself that he understands the Teacher: it is this same consciousness, he says, that runs and wanders on from life to life. It is the most natural thought in the world. It is also, the Buddha says, wrong, and he says so before the assembled monks, calling Sāti a foolish man. Consciousness does not travel. It arises. Without a condition there is no arising of consciousness at all. Born of eye and form, it is called eye-consciousness; of ear and sound, ear-consciousness; and so on through mind and its objects. Consciousness is named by what it depends on, as fire is named by what it burns: a fire of logs is a log fire, a fire of straw a straw fire. Take away the fuel, and there is no fire waiting somewhere offstage.
This is where everything begins, and it should be allowed to be as stark as it is. The earliest teaching does not tuck a witness behind the heaps. Knowing is one of the heaps. What we meet here is a phenomenology of suffering of breathtaking precision: contact gives rise to feeling, feeling to craving, craving to clinging, and consciousness is one link in that chain, not the eye that watches it.
Even the vocabulary refuses to sit still. In Saṃyutta Nikāya 12.61 the Buddha, speaking of the untaught worldling, runs three words together: yañca kho etaṃ vuccati cittaṃ itipi mano itipi viññāṇaṃ itipi, “that which is called mind, or mentality, or consciousness". Citta, mano, viññāṇa: near-synonyms, and all three, he says, arise as one thing and cease as another, by day and by night, like a monkey in the forest seizing one branch, letting it go, seizing another. The early texts never fixed a technical hierarchy between them. Remember this blur. Centuries of later thought will live inside it.
And the word that will one day carry the whole tradition on its back, ñāṇa, in Sanskrit jñāna, is at first almost humble. It means knowing as an act: the knowledge of the destruction of the taints, the knowledge and vision of things as they truly are, yathābhūtañāṇadassana. It is something that dawns on the path. Vijjā, true knowledge, is simply the undoing of avijjā, ignorance, and the three knowledges of the night of awakening are events, things that happened to a man sitting beneath a tree. Nowhere in the early discourses is ñāṇa the unborn ground of anything. It is the eye that sees the unborn. It is not the unborn itself.
Not Nothing: The Unconditioned and the Verses That Shimmer
It would be a grave misreading to conclude that early Buddhism is a doctrine of nothingness. The Buddha turned from annihilationism as firmly as from eternalism, and the early canon affirms something unconditioned with a force that can still stop the breath. The real question is not whether the earliest teaching affirmed an unconditioned. It plainly did. The question is whether it ever called that unconditioned mind. Here the texts are exact, and they pull in two directions at once.
The unconditioned is affirmed, almost thunderously. In the Udāna (8.3) the Buddha declares: atthi bhikkhave ajātaṃ abhūtaṃ akataṃ asaṅkhataṃ, “there is, monks, an unborn, unbecome, unmade, unconditioned." Were there not, no escape from the born, the become, the made and the conditioned could ever be known. Just before (Udāna 8.1) he speaks of a sphere, an āyatana, where there is neither earth nor water nor fire nor wind, neither this world nor another, neither coming nor going, without support, without object: this, he says, is the end of suffering. Listen to the grammar. The unconditioned is a there is, a sphere, a dimension. It is never once called consciousness.
The unconditioned is known, and the one who knows does not evaporate. The later Theravāda Abhidhamma says plainly what the discourses imply. Nibbāna is the single unconditioned dhamma. In the instant of path and fruition a supramundane mind arises and takes nibbāna as its object. Mind does not dissolve into nibbāna; nibbāna does not become mind. Knowing and the unconditioned touch, and remain two: the one conditioned and momentary, the other unconditioned and not a mind at all. This is the cleanest early position. It refuses annihilation without crowning awareness as the ground.
But there are verses where the line trembles. Four of them shine out of the canon, and the whole later tradition will gather around them.
The luminous mind
In the Aṅguttara Nikāya (1.49–52) the Buddha says: pabhassaram idaṃ bhikkhave cittaṃ, tañca kho āgantukehi upakkilesehi upakkiliṭṭhaṃ, “luminous, monks, is this mind, and it is defiled by defilements that arrive as guests." The stains are visitors. The radiance is not. On its own the sentence is a brief word of encouragement: the mind can be trained, because its corruption is not its nature. Read from the far end of history, it is the seed from which every teaching on the nature of mind would grow. The canon does not tell us which reading is right. It simply lets the sentence shine.
Consciousness that lands nowhere
In Saṃyutta Nikāya 22.53, once lust for the heaps is abandoned, tad appatiṭṭhitaṃ viññāṇaṃ avirūḷhaṃ anabhisaṅkhacca vimuttaṃ: “that consciousness, unestablished, not growing, not generating, is liberated." In Saṃyutta Nikāya 12.64, consciousness without craving is likened to a beam of sunlight entering a house that has no eastern wall: it strikes nothing, it rests on nothing. Mark the wording. This is still called viññāṇa. It has not stopped. It has stopped landing.
Consciousness without feature
Then the strangest verse of all. In the Kevaddha Sutta (Dīgha Nikāya 11), and again in Majjhima Nikāya 49: viññāṇaṃ anidassanaṃ anantaṃ sabbato pabhaṃ, “consciousness without feature, infinite, luminous on every side." There, the verse continues, earth, water, fire and wind find no footing; there name-and-form come to an end. No passage in the early canon comes closer to calling the unconditioned a consciousness. The Theravāda commentary softens it by reading viññāṇa here not as consciousness but as “that which is to be known", that is, nibbāna. The reading is possible. It is also a quiet confession: the commentators felt the heat of the verse.
What is not declared
When the wanderer Vacchagotta presses the Buddha on whether the liberated one exists after death, does not exist, both, or neither, the Buddha declines all four (Majjhima Nikāya 72). When a fire goes out, he asks, has it gone east, west, north or south? The question does not fit. The Tathāgata is deep, immeasurable, hard to fathom, like the great ocean. This is not annihilation. Nor is it an eternal awareness. It is silence held open on purpose, a door the Buddha would not close in either direction.
So the earliest position is neither void nor ground. It affirms an unconditioned. It calls the freed mind luminous and unestablished. In one astonishing verse it speaks of a consciousness without feature, shining on every side. Yet it never makes knowing the ground of being, and its central teaching treats consciousness as conditioned through and through. The later tradition would build its palaces on the exceptions.
The Mind That Is No-Mind: Perfection of Wisdom and the Middle Way
Centuries pass, and a new kind of scripture appears, vast and strange and intoxicating. The Perfection of Wisdom in Eight Thousand Lines opens its teaching on the bodhisattva with a sentence the whole later tradition will quote again and again: tac cittam acittam, prakṛtiś cittasya prabhāsvarā, “that mind is no-mind; the nature of mind is luminous."
Let us read it slowly. The first half empties the mind of every essence. The second half reaches back to the luminous mind of the Aṅguttara Nikāya and names that luminosity the mind's very nature, its prakṛti. In a single breath the sūtra denies that mind is anything at all and declares that its nature shines. Everything that follows in this essay is already folded inside that one sentence.
The goal of the Perfection of Wisdom is sarvākārajñatā, the knowledge of all aspects, the omniscience of a buddha. Knowing has moved from an event along the path to the very content of the goal. And yet the same sūtras insist that this knowledge knows nothing, because there is nothing to be known: every dharma is empty, unborn, like a magical illusion, like a dream. Omniscience is defined as the non-apprehension of anything whatever. The knowing remains. Its objects have melted.
The Noble Nāgārjuna sharpened this edge until it could cut, without ever resolving it. In the Root Verses on the Middle Way he describes the nature of things as aparapratyayaṃ śāntaṃ prapañcair aprapañcitam, nirvikalpam anānārtham, “not dependent on another, peaceful, not elaborated by elaborations, free of conceptual construction, not of many meanings" (Mūlamadhyamakakārikā 18.9). Then he goes further than anyone had dared: between saṃsāra and nirvāṇa there is not the slightest difference, not even the subtlest (25.19–20). This reality is not called mind. It is not called knowing. It is what remains when every view, the view of emptiness included, has been released.
This left the Middle Way with a question it never closed: does a buddha still know? Some Madhyamaka masters held that in the dharmakāya the movements of mind and mental factors have ceased altogether, since all conceptual activity has come to rest. Candrakīrti, in his Entering the Middle Way, describes buddhahood as the state in which mind and mental factors are stilled, while the form bodies go on acting for beings without a single thought, like a wish-fulfilling jewel that grants what is asked of it while intending nothing. Others protested that a buddha must know, or the word omniscience means nothing. The debate rolled on through the later Indian and Tibetan schools. That it existed at all tells us everything. The Middle Way had swept away every ground, and still called the goal of the path all-knowing.
The Turning of the Basis: Yogācāra and Buddha Nature
With Yogācāra the shift steps into daylight. The school takes consciousness, once a single heap among five, filed beside the body, and makes it the field in which everything appears: vijñaptimātra, “only (mental) representation". Beneath the six familiar consciousnesses it discerns a deeper current, the storehouse consciousness, ālayavijñāna, carrying the seeds of every experience we have had and will ever have. Consciousness is still conditioned here; the storehouse is a stream, not a soul. But it has travelled from the edge of the analysis to its very heart.
Then comes the decisive move: āśrayaparāvṛtti, the turning of the basis. At awakening the eightfold consciousness does not simply switch off. It is transfigured into knowing. In the scheme set out in the Ornament of the Mahāyāna Sūtras and the Buddhabhūmi Sūtra, the storehouse becomes mirror-like knowing, the afflicted mind becomes the knowing of equality, the mental consciousness becomes discerning knowing, and the five sense consciousnesses become the knowing that accomplishes what must be done. Vijñāna becomes jñāna. The prefix vi-, which the later tradition loved to read as “dividing", simply falls away, and what was divided knowing becomes undivided knowing.
Vasubandhu's Thirty Verses says it without a trace of hedging. When consciousness no longer grasps any object, acitto 'nupalambho 'sau jñānaṃ lokottaraṃ ca tat, “that is no-mind, non-apprehension; that is supramundane knowing" (Triṃśikā 29). And of this state: sa evānāsravo dhātur acintyaḥ kuśalo dhruvaḥ, sukho vimuktikāyo 'sau dharmākhyo 'yaṃ mahāmuneḥ, “that alone is the stainless element, inconceivable, wholesome, permanent, blissful; it is the body of liberation, called the dharma-body of the great sage" (Triṃśikā 30).
Now hold this beside the Discourse on the Characteristic of Not-Self. There, whatever is impermanent is suffering, and nothing of the kind is fit to be called self. Here, supramundane knowing is dhruva, permanent, and sukha, blissful. For the awakened state, two of the three marks have been turned inside out. Vasubandhu still calls it no-mind; he still denies it any object. But the knowing that remains is stable. And it is happy.
The treatises on buddha nature walk further still. The Ratnagotravibhāga praises buddhahood as acintyaṃ nityaṃ ca dhruvam atha śivaṃ śāśvatam, “inconceivable, permanent, steadfast, peaceful, eternal" (2.29). The Mahāyāna Mahāparinirvāṇa Sūtra and the Śrīmālādevī Sūtra speak of the four perfections of the dharmakāya: permanence, bliss, self and purity, nitya, sukha, ātman, śubha. These are exactly the four inversions the earliest teaching came to dismantle: mistaking the impermanent for permanent, suffering for bliss, the not-self for self, the impure for pure. In the dharmakāya the four errors are reborn as four truths. It is one of the most daring reversals in the history of religious thought.
And the tradition knew precisely how it sounded. In the Laṅkāvatāra Sūtra the bodhisattva Mahāmati asks the question everyone was thinking: is this buddha nature you teach not simply the self of the non-Buddhists? No, the Buddha replies. The tathāgatagarbha is taught as emptiness, as the limit of reality, as nirvāṇa, as the unborn; it is clothed in the language of self only to draw near those who are frightened by selflessness. The answer is candid about its own method. It also admits, simply by needing to be given, that the new language had drifted close enough to the old language of the self to require explaining.
Recognition: Mahāmudrā and the Great Perfection
In the songs of Saraha the scholastic voice falls silent and another voice begins to sing. Mind itself is like space, unborn, the source of saṃsāra and nirvāṇa alike, and to recognise it is to be free. The long argument relaxes into a gesture of pointing. The Tibetan Mahāmudrā traditions that grew from these songs speak of sems nyid, the very nature of mind, and of lhan cig skyes pa, the co-emergent, present from the beginning and arising together with every single thought. Awakening is no longer the transformation of a stream into something it was not. It is the recognition of what the stream has always been.
The Great Perfection carries this to its summit, and it does so with a distinction early Buddhism never drew. The Omniscient Longchenpa sets sems, ordinary mind, against rig pa, awareness. Sems is the conditioned, dualistic mind that grasps at objects and spins through saṃsāra: precisely the consciousness of the five heaps, and every word the Buddha spoke of it remains true. Rig pa is the self-knowing awareness that is the ground's own nature: empty in essence, luminous in nature, unobstructed in its responsiveness. The earliest teaching had one word for consciousness and found it conditioned. The Great Perfection splits the word in two. All the ancient analysis is poured onto sems. Rig pa stands outside it, untouched, as open as the sky under which the analysis was carried out.
Even the Tibetan word for jñāna tells the story. Ye shes is glossed by the tradition as ye nas shes pa, “knowing from the very beginning". That syllable ye, primordial, from the first, was added by the Tibetan translators. It is not in the Sanskrit. One syllable, and a whole vision of reality shifts its centre. In the Great Perfection this primordial knowing is the ground, gzhi, itself: primordially pure, ka dag, and spontaneously present, lhun grub. The path does not produce it. It was never stained. It neither arises nor ceases. In the All-Creating King, the Kun byed rgyal po, this awakened mind speaks in the first person, as the maker of all that appears, a sentence that would have startled the monks who heard the rebuke of Sāti.
Every master of the Great Perfection then adds the same qualifications, and they are not ornament. Rig pa is not a thing. It is not established by concepts. It cannot be pointed out as an object, since it is what knows. It is empty. It is not the self the non-Buddhists cling to. These negations do real work: they block every road by which awareness might be turned into an entity, a soul or a substance. But notice what they do. They qualify something. They do not deny it. What they qualify is a knowing that is primordial, unborn, and the ground of all experience. The Discourse on the Characteristic of Not-Self could never have said this of consciousness. The Great Perfection says it of ye shes, and says it with a joy that has carried practitioners across more than a thousand years.
Six Tensions, Held Open
The movement traced so far has its own coherence, and every step had its reasons, born of debate and of real contemplative discovery. But it leaves at least six tensions that the later tradition carries rather than dissolves. They deserve to be named plainly, not defended.
The heap and the ground. The earliest teaching sets consciousness among the five heaps and calls it impermanent, suffering and not-self. The latest sets primordial knowing at the ground of everything, unborn and unchanging. The later tradition meets this by splitting the word: the heap is vijñāna or sems, the ground is jñāna or rig pa. The split is philosophically defensible. But the early discourses do not make it. When the Buddha rebuked Sāti, he did not tell him that he had confused ordinary consciousness with primordial awareness. He told him that consciousness arises from conditions.
Knowing without an object. In the early analysis, knowing is always knowing of something; consciousness takes its very name from its object, as fire from its fuel. Yogācāra and the Great Perfection speak of a knowing that grasps nothing and yet is not nothing: self-knowing, luminous, objectless. The early texts come near this only in the consciousness that lands nowhere and the consciousness without feature. Whether these are seeds of the later doctrine or simply portraits of a liberated stream of mind is exactly what the texts alone cannot settle.
The marks reversed. Impermanence, suffering and not-self were the marks of everything conditioned, and the unconditioned stood apart from them. In the Thirty Verses, supramundane knowing is permanent and blissful. In the buddha-nature sūtras the dharmakāya is permanent, blissful, self and pure. The earliest teaching allowed the unconditioned to be stable and peaceful. It did not allow consciousness to be. The later tradition carried the qualities of the unconditioned over into knowing itself.
The qualifiers carry the weight. Every later teaching surrounds primordial knowing with negations: not a thing, not conceptually imputed, not reified, not a self, empty. They forestall the worst misunderstandings. But a reader may fairly ask what remains once all of them have been applied. If the answer is "nothing at all", the language of ground, luminosity and primordial knowing becomes hard to justify. If the answer is "knowing", then a knowing has been affirmed that the earliest teaching did not affirm. The tradition lives, breathes and practises between these two answers.
Innovation or unfolding. The later schools present their teaching as the definitive meaning of what the Buddha taught, and the early teachings as provisional. The Laṅkāvatāra even says the language of self is used to attract those who fear selflessness. Within the tradition this hermeneutic is coherent. Historically, though, the movement from heap to ground is a change, and the honest description is that later masters, working from genuine contemplative realisation and from a handful of early verses, built a phenomenology of awareness that the earliest teaching did not contain in explicit form.
A blurred vocabulary. Citta, mano and viññāṇa are near-synonyms in the early texts. Ñāṇa is an act of insight. Vijjā is the knowledge that ends ignorance. None of these words was defined in a way that settled whether awareness is an event or a ground. The later traditions inherited this looseness and used it: the same words could name the conditioned stream and the unborn knowing. Much of the history traced here is the history of words acquiring a second meaning without ever losing their first.
None of these tensions is a refutation. Each marks a place where the tradition chose, consciously or not, to let experience run ahead of its earliest categories.
What Was Gained, and What Is Risked
The phenomenology of suffering asked one question with unmatched precision: how does experience bind? Its answer was dependent arising, and its method was to see every element of experience, consciousness included, as conditioned, impermanent and not-self. Its strength is that it leaves nothing whatever to cling to. Its silence is that it does not say, except in a few luminous verses, what the freed mind is like.
The phenomenology of awareness asked the other question: when nothing binds, what is present? Its answer was primordial knowing, luminous, empty, unobstructed, never stained. Its strength is that it speaks directly to what contemplatives found when analysis had done its work: not a void, but a clear and open knowing, as intimate as one's own face. That discovery is real, and the earliest texts themselves bear witness to it, in the luminous mind, the consciousness that lands nowhere, the consciousness without feature shining on every side. The later tradition gave that discovery a language.
The danger is the one the Buddha named when he rebuked Sāti: that awareness, once made the ground, becomes a subtle self, a witness standing behind experience, untouched by it, quietly admiring its own clarity. The Great Perfection's defence against this is not finally doctrinal. It is experiential. Rig pa is recognised, not believed in. It is recognised as empty in the very instant it is recognised as knowing. When that recognition is genuine, there is no one standing behind experience at all. When it is only a belief, the old danger walks straight back in.
So the honest account is neither that the later teachings lay hidden in the earlier ones nor that they betrayed them. It is that Buddhism followed its analysis of suffering all the way to its end, and found there something its early vocabulary had only glimpsed. It then spent fifteen centuries searching for words, and kept wrapping those words in negations so that they would never harden into what the Buddha had refused.
The tension between the heap of consciousness and primordial knowing is not a flaw to be explained away. It is the living record of a tradition holding two truths in one hand: that every knowing we can grasp is conditioned, and that the knowing which cannot be grasped has never, for a single instant, been absent.
