Chapter 4. Theravāda Abhidhamma (the Abhidhamma Piṭaka)¶

The preceding three chapters examined the northern Sthavira line: Sarvāstivāda realism, its vast system, and the Sautrāntikas' simplification of it. This chapter turns to the southern Sthavira line, the Abhidhamma of Theravāda. Alongside Sarvāstivāda, it is the other Abhidharma system preserved in full. Unlike Sarvāstivāda, which long ago disappeared with Buddhism in India, it still lives within a continuing tradition. Theravāda, especially in Myanmar, accords Abhidhamma study a high place. It also provides the theoretical framework for insight meditation (see Essay 9, Chapter 4).

1. From the seven treatises to the Abhidhammattha-saṅgaha: a system built in layers¶

Theravāda Abhidhamma accumulated layer by layer. At its base are the seven treatises of the Abhidhamma Piṭaka (see the table in 2.5). In fifth-century Sri Lanka, Buddhaghosa wrote the Visuddhimagga and compiled the commentaries, systematizing the tradition. Around the eleventh to twelfth centuries, Anuruddha's Abhidhammattha-saṅgaha condensed it into a compendium, giving definitive form to the standard framework of "eighty-nine types of consciousness, fifty-two mental factors, cognitive processes, and twenty-four conditions."^{1 2}

The layers must be distinguished, as elsewhere in this book. The precise schemata now associated with "Theravāda Abhidhamma" are largely products of the commentaries and medieval compendia. This applies especially to the eighty-nine types of consciousness and the cognitive process of seventeen moments. They are not all found in the earliest seven treatises; even a key concept such as bhavaṅga consciousness reached maturity only in the commentarial stage.³ As 2.5 noted, Theravāda furnished Abhidhamma with an origin story in which "the Buddha ascended to the Heaven of the Thirty-Three to teach it himself, and Sāriputta then relayed it." This was precisely a retrospective attribution of the later system to the Buddha's own teaching.

The arahant's smile-producing consciousness (hasituppāda-citta) deserves separate mention. This one entry among the eighty-nine types makes the system's ties to an earlier narrative layer especially clear. Most of the eighty-nine types are arranged by cognitive function, each slot corresponding to a mental phase such as adverting, receiving, discriminating, or producing karma. This one alone is an anomaly. It describes no cognitive function but is posited to explain a particular behavior: why arahants and Buddhas smile. The compendium classifies it as "rootless functional consciousness" (ahetuka-kiriya). Of the three rootless functional types, the other two perform the most basic function of adverting, either to the five sense doors or to the mind door. Smile-producing consciousness alone ends in a smile: a rootless moment that arises without engaging the wholesome or unwholesome. In a list that seeks to exhaust consciousness through its functions, it stands out as though it had been added afterward.⁴

It stands out because the question it answers arises from narrative, not analysis. A recurring formula in Pāli literature has the Buddha suddenly smile while walking or on his alms round. Ānanda sees this and asks why, and the Buddha explains the causes and results of the successive lives of a being he has seen. The "Young Sow" (Sukarapotikā) story in the Dhammapada commentary is one example. The Buddha sees a young sow on his alms round and smiles. In response to Ānanda's question, he recounts her long round of rebirth: in the time of Kakusandha Buddha she was a hen who heard the teaching; she later became Princess Ubbarī, then a Brahmā god, and has now fallen to birth as a sow. She will continue to pass through further births before finally attaining arahantship. Driven by wholesome and unwholesome karma, the round of rebirth has no end in sight. The sequence of a smile, Ānanda's question, and an account of former lives forms a well-established pattern in early narrative. Behind this pattern lies a question that calls for an answer: why would an awakened being who has left desire behind and cut off craving still smile? Is a smile not still an expression of emotion, of pleasant feeling? Smile-producing consciousness resolves this doctrinal difficulty. It classifies the smile as a rootless, merely functional moment outside the wholesome and unwholesome, preserving the narrative fact of the smile without contradicting freedom from desire. It has a clear apologetic purpose: to demonstrate to doubters that the awakened one's smile is no relapse into attachment and emotion. For other apologetic narratives surrounding the Buddha, see 1.4.

A small fissure thus appears here, in exact contrast to the origin story at the beginning of this section. Tradition calls Abhidhamma a complete system that the Buddha personally delivered in a single teaching in the Heaven of the Thirty-Three. Yet an entry such as smile-producing consciousness is plainly a slot added by the later commentarial layer to accommodate the long-circulating earthly motif of "the Buddha's smile." This book does not venture to say that this consciousness "originated directly" in a particular question by Ānanda: the book has found no explicit statement in the tradition to support that claim. Only two points can be established. First, narratives of the Buddha smiling as he observes beings passing through rebirth appear very early. They may well record something that happened, or at least a very early oral tradition, rather than an invention of the commentators. Second, the slot for smile-producing consciousness is a trace of how Theravāda Abhidhamma received and assimilated such early narratives, including early apologetic statements. This fissure invites reflection in two directions. In one direction, it looks as though the community was building a defense in advance for a phenomenon that need never have been a problem, since awakened beings, too, can smile. This suggests a measure of unnecessary anxiety. In the other, it can also be seen as Abhidhamma faithfully taking up a very early transmission and incorporating older material scattered through narratives into its system. Whichever direction one favors, both point to the same fact: this seemingly heaven-sent pure analysis is linked to early Buddhist narrative by a thread that was never broken.

Buddhaghosa, who lived around the fifth century CE, was the central figure in this accumulation of layers. Born in India, he crossed the sea to Sri Lanka after ordination and systematically compiled the existing commentarial tradition at the Mahāvihāra. His Visuddhimagga took the three trainings in morality, concentration, and wisdom as its framework, integrating scattered teachings and methods of practice into a major treatise that became Theravāda's standard reference. He also translated the old Sinhala commentaries into Pāli and composed new Pāli commentaries in turn, tightly joining Sri Lanka's local transmission to the Pāli canon.⁵ The relative doctrinal unity associated with Theravāda today was largely established by Buddhaghosa. His place in Theravāda resembles Xuanzang's in Chinese Buddhism, except that he was a commentator and systematizer rather than a translator of scriptures. The analogy is not exact, but its general direction holds: a tradition's form is often determined less by its earliest texts than by a decisive moment of systematization.

A comparison of scale makes the disparity within this "layer-by-layer accumulation" clear. The seven treatises of the Abhidhamma Piṭaka are a vast body of work. The Paṭṭhāna alone, the longest of them, occupies five volumes and roughly 2,500 pages in the Burmese Sixth Council edition; the seven together are vaster still. Yet the Abhidhammattha-saṅgaha, now required introductory reading and almost a synonym for "Abhidhamma," consists of only nine chapters and about fifty pages.¹

The seven canonical works listed in Chapter 2.5 are the Dhammasaṅgaṇī, Vibhaṅga, Dhātukathā, Puggalapaññatti, Kathāvatthu, Yamaka, and Paṭṭhāna. The figure's claim that the Siamese Paṭṭhāna alone exceeds six thousand pages is incorrect. Nyanatiloka gives 6,297 pages for the complete Abhidhamma Piṭaka in that edition, and six volumes totaling 3,120 pages for the Paṭṭhāna. The five volumes and approximately 2,500 pages mentioned above refer to the Burmese Sixth Council edition described by Bodhi.⁶

The disparity runs in two directions: at one end stands the complete Abhidhamma Piṭaka in the Siamese edition, an exposition of more than six thousand pages; at the other, the Abhidhammattha-saṅgaha, a compendium of about fifty pages. The former analyzes layer after layer; the latter gathers everything into a few orderly lists and schemata. What most people encounter today as "Theravāda Abhidhamma" is therefore a highly concentrated medieval product. Both in scale and in the degree to which it is "neatly fixed in place," it differs greatly from its original canonical form. And it was precisely this small compendium that organized consciousness, mental factors, and cognitive processes into the most "ultimate" fixed formulae, as we shall see in Section 3 below.

2. Differences from the north: no reality of all three times, bhavaṅga, and twenty-four conditions¶

Theravāda Abhidhamma also follows the path of analyzing dharmas, but several of its key premises differ markedly from those of northern Sarvāstivāda. Most importantly, Theravāda does not posit the reality of all three times. Its Kathāvatthu devotes a section specifically to refuting the claim that "all [three times] exist." On the question of time, Theravāda recognizes only the present; here it is closer to Sautrāntika and opposed to Sarvāstivāda.⁷

The two branches can be compared side by side:

Different counts of dharmas: 82 and 75

The comparison table gives Theravāda six more mental factors (52 versus 46), but a larger difference lies behind this: Theravāda has 82 dharmas in all (1 consciousness, 52 mental factors, 28 material dharmas, and 1 nibbāna), whereas Sarvāstivāda has 75. The main increase is in material dharmas: Sarvāstivāda posits 11, Theravāda 28. Theravāda subdivides matter more finely. Besides the five sense faculties and five sense objects, it posits a large group of "derived material phenomena" (upādāya-rūpa, secondary forms of matter that arise in dependence on the four great elements): lightness, malleability, and wieldiness of matter; "bodily intimation" and "verbal intimation," associated with bodily movement and speech; the material space element; the material life faculty (subtle matter that sustains life); and others.³ Sarvāstivāda's "unmanifest matter" (avijñapti-rūpa) is one of its most disputed material dharmas; the Sautrāntikas abolished it. Theravāda does not posit this item, and its substitute is not located at the level of matter. As for unconditioned dharmas, Sarvāstivāda posits three (space, cessation through discernment, and cessation without discernment), while Theravāda posits only one (nibbāna). This numerical simplification is connected with Theravāda's different treatment of the "unconditioned"; it also avoids Sarvāstivāda's practice of assigning own-nature to each of the unconditioned dharmas. The provenance of the two Sarvāstivāda counts must be specified. Both the forty-six mental factors and the seventy-five dharmas in five categories follow the definitive scheme of the Abhidharmakośa. The two hundred fascicles of the Mahāvibhāṣā contain neither "seventy-five" as a count of dharmas nor a closed total of mental factors. The items in its five categories (matter, consciousness, mental factors, formations dissociated from mind, and the unconditioned) are scattered throughout the work. Gathering them into a single table was Vasubandhu's work.⁸

Sarvāstivāda posits unmanifest matter to answer one question: when someone who has received the precepts falls asleep, where is the substance of those precepts? Its answer is to posit a dharma, a kind of matter that does not manifest externally. It arises when the precepts are received and continues until they are relinquished or the person dies. Theravāda has no entity that bears the substance of the precepts. Their persistence is borne by the arising of the mental factors of abstinence whenever the relevant conditions are encountered, and by the conditional relations thereby left behind. The explanation rests on mental factors and the twenty-four conditions.⁹ The additional material dharmas in Theravāda's list of twenty-eight, compared with Sarvāstivāda's eleven, result from its finer subdivision of matter; they have nothing to do with the task performed by unmanifest matter. Sarvāstivāda prefers to posit one more entity to bear persistence; Theravāda prefers to let conditions bear it. We shall encounter this choice again in the discussion of the twenty-four conditions below.

The philosophical orientation of the twenty-four conditions

The numerical difference between the "24 conditions" in the table and Sarvāstivāda's "4 conditions + 6 causes" reflects more than the fineness of classification: it also reflects different philosophical orientations. Sarvāstivāda's six causes and four conditions emphasize a typology of causation, concentrating on "what kind of cause produces what kind of result." Causal relations are sorted and clearly marked. The twenty-four conditions of the Theravāda Paṭṭhāna resemble an exhaustive enumeration of "all possible conditional relations between any two dharmas." They ask "what kind of conditionality can exist between these two dharmas," without centering on the one-way arrow of "cause produces result." The twenty-four conditions include categories absent from Sarvāstivāda's four: decisive support (upanissaya-paccaya), a dharma's powerful impetus to practice, such as habitual meditative concentration supporting a new attainment of concentration; and repetition (āsevana-paccaya), through which the repeated operation of impulsion consciousness strengthens subsequent consciousness of the same kind. Sarvāstivāda does not establish these as separate conditional relations.¹ Theravāda does not posit specialized entities for retaining karma, such as possession or unmanifest matter, but develops the level of "conditions" in great detail. This is a characteristic choice: it explains persistence by refining conditional relations in place of adding entities.

The table's last row identifies Theravāda's solution to "continuity without a self," the foremost problem discussed in 1.5: bhavaṅga consciousness, a "factor of existence" or underlying current of life. When there is no active cognition, as in deep sleep or between cognitive processes, consciousness does not cease altogether. It continues as bhavaṅga, receiving the maturation of past-life karma, sustaining continuity through a single lifetime, and providing the background against which each episode of cognition rises and falls.¹⁰ Functionally, bhavaṅga belongs to the same family of solutions as Sautrāntika "seeds" and Yogācāra "ālayavijñāna": each installs an underlying bearer to address this problem. Theravāda, however, locates it within the "mental continuum" itself, without positing a separate storehouse.

A distinction must be added here, lest the comparison go too far. Some scholars do directly equate bhavaṅga with Yogācāra's ālayavijñāna. In function and origin, the two certainly have similarities. Both are underlying currents of consciousness called forth by the problem of "continuity without a self"; both bear continuity and karmic results, and arise from a common difficulty. But this book draws a boundary: bhavaṅga remains a phenomenological treatment of continuity, a flowing baseline consciousness. It has not been ontologized into an independent, seed-storing, warehouse-like entity. In its "degree of ontologization," it is not at the same level as the pudgala or ālayavijñāna, and the three cannot simply be equated doctrinally. This also accords with the argument later in this chapter that Theravāda remains tied to actual practice and is less prone to ontologization.

This boundary can be drawn more precisely. Part II, Essay 14, Chapter 6 of this book lists three distinctions. First, bhavaṅga adds no item to the inventory. Ālayavijñāna is the eighth consciousness; positing it adds another layer beyond the original six consciousnesses. Bhavaṅga adds no dharma: it is one of nineteen types of resultant consciousness already included in the table of eighty-nine, and "bhavaṅga" is simply a function it performs. Second, bhavaṅga does not receive impressions. Ālayavijñāna receives the permeation of all active manifestations, and seeds are stored within it. Bhavaṅga's object is fixed at the moment of rebirth-linking, taken from the karma, sign of karma, or sign of destiny that appeared in the preceding life's final cognitive process. It remains unchanged throughout the ensuing life. Bhavaṅga records nothing that happens in that life and has no place in which to record it. Third, bhavaṅga is not required to explain karmic results. Ālayavijñāna combines two offices: the bearer of continuity and the repository of karmic efficacy. Bhavaṅga performs only the first; karmic results are assigned to the karma condition operating across different moments.¹¹

3. The cognitive process: fixing cognition into seventeen moments¶

Theravāda's most distinctive feature, and the one most deserving of critical examination, is the "cognitive process" (citta-vīthi). It divides each complete act of cognition into a fixed sequence of mind-moments. Taking a vivid object cognized through the five doors (the first five consciousnesses) as an example, the standard schema consists of seventeen moments:

Cognition through the mind door, involving mental consciousness alone, has a separate, shorter process. The analysis is astonishingly detailed. Within a moment of "seeing," it specifies the places of attention, receiving, discrimination, the production of karma, and residual momentum. Impulsion is the phase in which wholesome and unwholesome karma occur.

One statement needs correcting at the outset: describing a cognitive process as "exactly seventeen moments" is an oversimplification. This field of study is far more precise than a single number. The length and composition of the process vary with whether the object is desirable or undesirable, vivid ("great") or faint ("small," or even "very small"). An extremely faint object may not even arouse impulsion, but merely cause a few vibrations of bhavaṅga before passing. The five doors and mind door each have their own patterns. Entry into meditative absorption has an absorption process; noble practitioners' seeing of the path and attainment of fruition have distinct path and fruition processes. This is a whole set of precise schemata classified by circumstance, by no means a rigid row of seventeen boxes.

But this takes the problem deeper. This book's position is that close phenomenological attention to the flow of consciousness is a legitimate extension of the early teaching's "stream of phenomena" and is not itself problematic. The problem is fixing that flow in place: turning cognitive activity that is flexible and varies with causes and conditions into an engineering diagram, exhaustive in its detail and fixed at every point, as if consciousness really operated slot by slot in this way. The more finely descriptions are divided and the more completely they are listed, the easier it becomes to understand a living flow as a fixed structure. This is precisely what 2.5 called being "too ultimate." It belongs to the same category as the criticism in 3.2 that Sarvāstivāda "turns every function into an entity," except that Sarvāstivāda fixes "dharmas" in place, while Theravāda fixes "processes."

A piece of corroborating evidence shows that these schemata bear the marks of human construction rather than simply copying reality. Look back at the comparison table in the preceding section: both branches discuss mental factors and conditions, yet their counts differ greatly. Should there be forty-six mental factors or fifty-two? Should the conditions number four plus six, or twenty-four? If these really were faithful inventories of "ultimate reality," the two branches should not differ so much. Their disagreement itself reveals that each is a set of choices and conventions.

One item must be subtracted from this discrepancy. The slot for consciousness does not belong in it. Theravāda consciousness is one ultimate dharma; eighty-nine counts the types obtained by cross-classifying that same dharma by object, sphere or level, and associated mental factors. In this slot, both branches in fact posit only one dharma.¹² The preceding section's own total of 82 dharmas supplies a check: 1 consciousness, 52 mental factors, 28 material dharmas, and 1 nibbāna. If consciousness really counted as 89, the total could not be reached. The force of this corroborating evidence must be reassessed on the basis of mental factors and conditions alone.

4. Its grounding in practice, and the same underlying concern¶

Theravāda Abhidhamma nevertheless deserves a fair word. It differs from a purely scholastic system in one important respect: it has always remained connected to meditation. Its analysis of consciousness, mental factors, and cognitive processes is more than an exercise in cataloguing. It is a working map for insight meditation (vipassanā). Within present experience, practitioners must see for themselves the momentary arising and ceasing of dharmas, their impermanence and lack of self, reducing "I am seeing" and "I am thinking" to a series of ownerless, momentary mental dharmas. This book holds that, precisely because Theravāda binds Abhidhamma firmly to actual practice, the danger described in 2.5 is considerably reduced here: analysis is less likely to overshadow liberation as the end it serves. Analysis serves direct seeing, not an inventory of the world. It retains a connection to the practical, phenomenological core of the early teaching.

The underlying concern is the same as in the north. Though Theravāda dharmas do not exist permanently throughout the three times as Sarvāstivāda dharmas do, each is still assigned an "own-nature" (sabhāva) as its defining characteristic. This defining expression comes from the canonical Paṭisambhidāmagga. Buddhaghosa's commentaries extended it into a general convention; in the hands of the sixth-century commentator Mahānāma it was parsed as sat-bhāva, meaning existence. Own-nature thus acquired a reading concerned with a mode of existence, a step taken about a century after Buddhaghosa.^{13 14} With the cognitive process fixed in place and the northern and southern counts conflicting, it remains dangerous to treat this inventory as the world's ultimate underlying reality. The book's overall judgment agrees with 2.5: Theravāda Abhidhamma is highly accomplished as a "phenomenology describing the mind" and strays less because it remains tied to practice. As to where the underlying concern lies, Part II, Essay 14, Chapter 7 revised the judgment after a fresh examination, and the revision is followed here. Ontologization does occur, but it occurs in no explicitly proclaimed doctrine. It occurs through procedures of cataloguing and the pressure exerted by format. Fixing things in place, meanwhile, marks a limit of the analytic approach itself, borne by all the schools and not unique to this tradition. The first half of the judgment stands; the second has been revised.

We shall encounter Theravāda Abhidhamma as a living tradition again in Essay 9, in the discussion of Theravāda. The next chapter first rounds off this line of inquiry into the early schools with its most unusual branch, the Vātsīputrīyas. While the others "install another bearer under the premise of no-self," this school simply approaches the boundary of a permanent self and posits a "pudgala."

References¶