This chapter contains discourses that explore sets of four qualities, concepts, or principles essential to the Buddha's teachings. Each sutta examines groups such as the four foundations of mindfulness, the four types of noble disciples, or the four aspects of right effort. These teachings emphasize the interconnectedness of these elements and their collective significance in the practice of the Dhamma. The "Book of Fours" provides a deeper understanding of how these grouped qualities contribute to spiritual development and insight on the way of practice to enlightenment.

The Book of the Fours

Bhaṇḍāgāma vagga - The Chapter at Wares Village

The Chapter at Wares Village in the Book of the Fours, containing discourses 1–10.

AN 4.1 Anubuddha sutta - Understood

The Buddha explains how misunderstanding and not penetrating four principles - 1) ethical conduct, 2) collectedness, 3) wisdom, and 4) liberation - has led to wandering on in cyclic existence for a long time.

PTS 2.1

AN 4.5 Anusota sutta - Along the Current

The Buddha describes the four kinds of persons found existing in the world - those who go with the current, those who go against the current, those who are steady, and those who have crossed over, standing on the firm ground, arahants.

PTS 2.5

AN 4.6 Appassuta sutta - Little Learned

The Buddha describes the four kinds of persons found existing in the world - those with little learning who are not accomplished by that learning, those with little learning who are accomplished by that learning, those with much learning who are not accomplished by that learning, and those with much learning who are accomplished by that learning.

PTS 2.6–2.7

AN 4.8 Vesārajja sutta - Assurances

The Buddha describes the four assurances possessed by the Tathāgata.

PTS 2.8–2.9

Cara vagga - The Chapter on Walking

The Chapter on Walking in the Book of the Fours, containing discourses 11–20.

AN 4.11 Cara sutta - Walking

The Buddha describes two types of bhikkhus based on how they deal with thoughts of sensuality, ill will, and harming while walking, standing, sitting, and lying down, and which one is capable of reaching the highest awakening.

PTS 2.13

AN 4.13 Padhāna sutta - Striving

The Buddha describes the four right strivings concisely and precisely.

PTS 2.15

AN 4.14 Saṁvara sutta - Restraint

The Buddha outlines the four right strivings: striving for restraint, striving to abandon, striving to cultivate, and striving to protect.

PTS 2.16

Uruvelā vagga - The Chapter at Uruvelā

The Chapter at Uruvelā in the Book of the Fours, containing discourses 21–30.

AN 4.21 Paṭhama uruvela sutta - Uruvelā (First)

The Buddha reflects on who he should honor and respect after his full awakening. Brahmā Sahampati encourages him to honor and respect the Dhamma.

PTS 2.20–2.21

AN 4.23 Loka sutta - World

The Buddha explains why he is called the Tathāgata, the one who has fully comprehended the world, its arising, cessation, and the way of practice leading to its cessation.

PTS 2.23

AN 4.24 Kāḷakārāma sutta - At Kāḷaka’s park

The Buddha does not cling to anything so when he sees, hears, senses, or cognizes, he does not formulate the seen, the unseen, what can be seen, or one who sees. He does not formulate the heard, the unheard, what can be heard, or one who hears. He does not formulate the sensed, the unsensed, what can be sensed, or one who senses. He does not formulate the cognized, the uncognized, what can be cognized, or one who cognizes.

PTS 2.24–2.25

AN 4.25 Brahmacariya sutta - The Spiritual Life

The spiritual life is not lived for the purpose of deceiving people, nor for the purpose of winning favor with people, nor for the sake of acquisitions, respect and popularity, nor for the thought ‘Let people know me thus.’

PTS 2.26

AN 4.29 Dhammapada sutta - The Four Dhamma Principles

The Buddha explains the four Dhamma principles that are foremost, ancient, rooted in tradition, timeless, and pure.

PTS 2.29–2.31

Cakka vagga - The Chapter on Situations

The Chapter on Situations in the Book of the Fours, containing discourses 31–40.

AN 4.32 Saṅgaha sutta - Supportive

The Buddha explains the four bases of a supportive relationship.

PTS 2.32

AN 4.37 Aparihāniya sutta - Non-decline

The Buddha shares the four training guidelines of: 1) accomplishment in virtue, 2) guarding the doors of the sense faculties, 3) observing moderation in eating, and 4) practicing wakefulness, that when undertaken with diligence and cultivated as qualities, lead to non-decline and brings one near to Nibbāna.

PTS 2.39–2.40

Rohitassa vagga - The Chapter with Rohitassa

The Chapter with Rohitassa in the Book of the Fours, containing discourses 41–50.

AN 4.41 Samādhibhāvanā sutta - Developments of Collectedness

The Buddha explains four developments of collectedness that, when cultivated and frequently practiced, lead to 1) a pleasant abiding in the here and now, 2) the attainment of knowledge and vision, 3) radical comprehension, and 4) the wearing away of the taints.

PTS 2.44–2.45

AN 4.42 Pañhabyākaraṇa sutta - Answering a Question

The Buddha outlines the four ways to answer questions and what makes someone skilled in responding.

PTS 2.46

AN 4.43 Paṭhama kodhagaru sutta - Valuing Anger (First)

The Buddha shares the four kinds of persons found existing in the world - those who value anger, contempt, gain, and honor, and those who value the good Dhamma instead.

PTS 2.46

AN 4.44 Dutiya kodhagaru sutta - Valuing Anger (Second)

The Buddha shares the four unwholesome practices of valuing anger, contempt, gain, and honor, and the four wholesome practices of valuing the good Dhamma instead.

PTS 2.47–2.48

AN 4.45 Rohitassa sutta - With Rohitassa

Can one reach the world’s end by traveling? Recalling a past life spent speeding across space, the deity Rohitassa learns from the Buddha that suffering ends not by traversing the physical cosmos, but by awakening within this conscious fathom-long body.

PTS 2.47–2.48

AN 4.49 Vipallāsa sutta - Inversion

The Buddha describes these four inversions of perception, thought, and view, and the four non-inversions. An uninstructed ordinary person perceives permanence in the impermanent, pleasure in the unsatisfactory, a self in what is impersonal, and beauty in the unattractive.

PTS 2.52

Puññābhisanda vagga - The Chapter on Overflowing Merit

The Chapter on Overflowing Merit in the Book of the Fours, containing discourses 51–60.

AN 4.55 Paṭhama samajīv sutta - The Same In Living (First)

If both husband and wife wish to see one another in this very life and also to meet one another again in the next life, both should be alike in faith, ethical conduct, giving, and wisdom.

PTS 2.61

AN 4.56 Dutiya samajīv sutta - The Same In Living (Second)

If both husband and wife wish to see one another in this very life and also to meet one another again in the next life, both should be alike in faith, ethical conduct, giving, and wisdom.

PTS 2.62

AN 4.57 Suppavāsā sutta - Suppavāsā

The Buddha teaches the laywoman Suppavāsā that giving food bestows life, beauty, happiness, and strength upon the recipient and, in turn, upon the giver. Such generosity, especially toward those accomplished in conduct is very fruitful.

PTS 2.62

Pattakamma vagga - The Chapter on Deeds of Substance

The Chapter on Deeds of Substance in the Book of the Fours, containing discourses 61–70.

AN 4.61 Pattakamma sutta - Suitable Action

PTS 2.65–2.68

AN 4.62 Ānaṇya sutta - Debtlessness

The Buddha explains the four kinds of happiness that are attainable by a lay person who enjoys sensual pleasures.

PTS 2.69

Apannaka vagga - The Chapter on Unfailing

The Chapter on Unfailing in the Book of the Fours, containing discourses 71–80.

AN 4.73 Sappurisa sutta - Person of Integrity

The Buddha describes the four qualities that distinguish a person of integrity from one lacking in integrity.

PTS 2.77–2.78

AN 4.77 Acinteyya sutta - The Inconceivable

The domain of wisdom of the Buddhas, on one in jhānas, the result of kamma, and speculation about the world are inconceivable and shouldn’t be speculated over or thought about.

PTS 2.80

AN 4.79 Vaṇijja sutta - Trade

The Buddha describes the cause and condition for why a trade, once undertaken, leads to loss, fails to meet its intended aim, succeeds as intended, or surpasses even its intended aim.

PTS 2.81

AN 4.80 Kamboja sutta - Kamboja

The Buddha describes the cause and condition for why a woman neither sits in public assemblies, nor pursues occupations, nor journeys to Kamboja.

PTS 2.82

Asura vagga - The Chapter on Demons

The Chapter on Demons in the Book of the Fours, containing discourses 91–100.

AN 4.92 Paṭhama samādhi sutta - Collectedness (First)

The Buddha outlines four kinds of persons based on whether they possess internal tranquility of mind, the penetrative vision of the Dhammas through higher wisdom, neither, or both of these attainments.

PTS 2.92

AN 4.93 Dutiya samādhi sutta - Collectedness (Second)

The Buddha categorizes four kinds of persons based on their meditative attainments. He emphasizes urgent exertion to develop internal tranquility of mind and the penetrative vision of the Dhammas

PTS 2.92

AN 4.94 Tatiya samādhi sutta - Collectedness (Third)

The Buddha advises four kinds of persons on seeking spiritual guidance. Depending on their attainments, practitioners should approach accomplished individuals to learn how to steady the mind or distinctly see intentional constructs, aiming to wear away the taints.

PTS 2.93–2.94

AN 4.95 Chavālāta sutta - The Charred Log

The Buddha ranks four kinds of persons: those practicing neither for their own benefit nor for others’, those practicing only for others, those practicing only for themselves, and those practicing for both. He likens the first to a charred log and the last to the cream of ghee.

PTS 2.95

AN 4.97 Khippanisanti sutta - Quick To Attend To

The Buddha explains the four kinds of persons found existing in the world.

PTS 2.97

AN 4.100 Potaliya sutta - Potaliya

The Buddha shares with Potaliya, the wanderer, the four kinds of persons found existing in the world - 1) one who criticizes the blameworthy, 2) who praises the praiseworthy, 3) who neither criticizes nor praises, and 4) who criticizes the blameworthy and praises the praiseworthy.

PTS 2.100–2.101

Valāhaka vagga - The Chapter on Gods of the Clouds

The Chapter on Gods of the Clouds in the Book of the Fours, containing discourses 101–110.

AN 4.109 Rukkha sutta - Tree

The Buddha describes four kinds of people based on their ethical conduct and the qualities of their associates, comparing them to trees made of softwood or heartwood and surrounded by softwood or heartwood trees.

PTS 2.109

Kesi vagga - The Chapter with Kesi

The Chapter with Kesi in the Book of the Fours, containing discourses 111–120.

AN 4.113 Patoda sutta - Whip

The Buddha describes four noble thoroughbred horses, each stirred and driven to urgency by progressively stronger stimuli. He draws a parallel to four noble thoroughbred persons, who likewise respond to increasingly intense circumstances with urgency and determination, leading them to the highest truth.

PTS 2.114–2.115

AN 4.115 Ṭhāna sutta - Cases Of Deeds

The Buddha describes four cases of deeds, and how an immature person and a wise person are to be understood by their responses to deeds that are disagreeable but lead to benefit and deeds that are agreeable but lead to harm.

PTS 2.118

AN 4.116 Appamāda sutta - Diligence

Diligence should be practiced in four areas - in abandoning bodily, verbal, and mental misconduct, and wrong view.

PTS 2.119

AN 4.117 Ārakkha sutta - Guarding

By actively protecting the mind from enticing, irritating, deceptive, and intoxicating phenomena, a practitioner attains freedom from fear, wavering, and they do not go by the mere word of an ascetic.

PTS 2.120

Bhaya vagga - The Chapter on Perils

The Chapter on Perils in the Book of the Fours, containing discourses 121–130.

AN 4.122 Ūmibhaya sutta - Peril Of Waves

The Buddha describes four perils that can be encountered by those who have gone forth into homelessness, drawing an analogy to the dangers faced when entering water. These perils are anger and |irritation::waves|, |gluttony::crocodiles|, sensual |pleasures::whirlpools|, and |lust::carnivorous fish|.

PTS 2.123–2.125

AN 4.123 Paṭhama nānākaraṇa sutta - Difference (First)

The Buddha shares the four kinds of persons — those who cultivate the first jhāna, the second jhāna, the third jhāna, and the fourth jhāna while perceiving gratification — and the difference in their rebirths.

PTS 2.126–2.127

AN 4.124 Dutiya nānākaraṇa sutta - Difference (Second)

The Buddha shares the four kinds of persons — those who cultivate the first jhāna, the second jhāna, the third jhāna, and the fourth jhāna while perceiving drawbacks — and the difference in their rebirths.

PTS 2.128–2.129

AN 4.125 Paṭhama mettā sutta - Loving-kindness (First)

The Buddha shares the four kinds of persons — those who cultivate loving-kindness, compassion, appreciative joy, and equanimity while perceiving gratification — and the difference in their rebirths.

PTS 2.128–2.129

AN 4.126 Dutiya mettā sutta - Loving-kindness (Second)

The Buddha shares the four kinds of persons — those who cultivate loving-kindness, compassion, appreciative joy, and equanimity while perceiving drawbacks — and the difference in their rebirths.

PTS 2.130

Puggala vagga - The Chapter on Individuals

The Chapter on Individuals in the Book of the Fours, containing discourses 131–140.

AN 4.132 Paṭibhāna sutta - Eloquence

The four types of people found in the world based on the presence or absence of rational and spontaneous eloquence.

PTS 2.135

Ābha vagga - The Chapter on Brightness

The Chapter on Brightness in the Book of the Fours, containing discourses 141–150.

AN 4.143 Āloka sutta - Light

The Buddha outlines the four lights: the light of the moon, the light of the sun, the light of fire, and the light of wisdom.

PTS 2.139

AN 4.148 Duccarita sutta - Misconduct

The Buddha shares in brief the four kinds of verbal misconduct - 1) lying, 2) divisive speech, 3) harsh speech, and 4) frivolous chatter.

PTS 2.141

AN 4.149 Sucarita sutta - Good Conduct

The Buddha shares in brief the four kinds of good verabl conduct - 1) truthful speech, 2) non-divisive speech, 3) gentle speech, and 4) wise counsel.

PTS 2.141

Indriya vagga - The Chapter on Faculties

The Chapter on Faculties in the Book of the Fours, containing discourses 151–160.

AN 4.157 Roga sutta - Illness

While bodily health may last for years or even decades, it is very rare to find beings who can enjoy freedom from mental illness even for a moment. The Buddha goes on to describe four illnesses that afflict one gone forth.

PTS 2.143

Paṭipadā vagga - The Chapter on Practice

The Chapter on Practice in the Book of the Fours, containing discourses 161–170.

AN 4.169 Sasaṅkhāra sutta - With Exertion

The Buddha describes four ways to attain final Nibbāna with or without exertion.

PTS 2.155

AN 4.170 Yuganaddha sutta - In Tandem

The Venerable Ānanda explains the four paths to arahantship.

PTS 2.156

Sañcetaniya vagga - The Chapter on Intention

The Chapter on Intention in the Book of the Fours, containing discourses 171–180.

AN 4.172 Vibhatti sutta - Analytical Knowledges

Venerable Sāriputta describes the four analytical knowledges he realized a half-month after his full ordination.

PTS 2.160

AN 4.180 Mahāpadesa sutta - The Great References

The Buddha teaches the four great references that should be kept in mind to determine the authenticity of the Dhamma, Vinaya, and the teacher’s instruction.

PTS 2.167–2.169

Brāhmaṇa vagga - The Chapter on Brahmins

The Chapter on Brahmins in the Book of the Fours, containing discourses 181–190.

AN 4.186 Ummagga sutta - Fundamental Questions

A bhikkhu asks the Buddha about the nature of the world, the mind, and wisdom.

PTS 2.177–2.178

AN 4.189 Sacchikaraṇīya sutta - Things to Be Realized

The eight liberations are to be realized with the body, past lives are to be realized through mindfulness, the passing away and reappearance of beings is to be realized through the eye, and the wearing away of the taints is to be realized through wisdom.

PTS 2.182

Mahā vagga - The Great Chapter

The Great Chapter in the Book of the Fours, containing discourses 191–200.

AN 4.191 Sotānugata sutta - Followed by Ear

The Buddha describes four benefits of deeply internalizing the Dhamma. Even if one dies muddle-minded, they are reborn among the deities, where hearing the Dhamma again and recollecting their past spiritual practice enables them to swiftly reach distinction.

PTS 2.185–2.186

AN 4.192 Ṭhāna sutta - Traits

How can true character be known? The Buddha explains that a person's deeper traits are only revealed over time to an attentive, wise observer: virtue through dwelling together, integrity through frequent interactions, resilience during adversity, and wisdom through deep conversation.

PTS 2.187–2.189

AN 4.199 Taṇhā sutta - Craving

The Buddha describes craving as a pervasive net that entangles the mind. He analyzes thirty-six modes of mental stirring—eighteen internal ways of conceiving the self and eighteen external ways of identifying with the world. Expanded across time, these 108 cravings form the “tangled ball of thread” that binds beings to the cycle of rebirth.

PTS 2.211–2.212

AN 4.200 Pema sutta - Affection

The Buddha explains how four modes of social partiality—affection and aversion arising in relation to others—bind beings to the world. He shows how a bhikkhu transcends these entanglements by means of the jhānas and attains final liberation through uprooting the deep-seated conceits of self-making.

PTS 2.213–2.216

Parisa vagga - The Chapter on Assemblies

The Chapter on Assemblies in the Book of the Fours, containing discourses 211–220.

AN 4.213 Akataññutā sutta - Ungratefulness

The Buddha explains how ungratefulness, along with misconduct in body, speech, and mind, leads one to be cast into hell, while gratefulness and ethical conduct lead one to be cast into heaven.

PTS 2.226

Duccarita vagga - The Chapter on Bad Conduct

The Chapter on Bad Conduct in the Book of the Fours, containing discourses 221–231.

AN 4.221 Duccarita sutta - Misconducts

The four verbal misconducts and the four good verbal conducts.

PTS 2.228

Kamma vagga - The Chapter on Deeds

The Chapter on Deeds in the Book of the Fours, containing discourses 232–242.

AN 4.232 Saṅkhitta sutta - Kamma in Brief

The four kinds of kamma in brief.

PTS 2.230–2.231

AN 4.233 Vitthāra sutta - Kamma in Detail

The Buddha explains four kinds of kamma: afflictive, non-afflictive, mixed, and the intention to abandon these deeds.

PTS 2.230–2.231

AN 4.234 Soṇakāyana sutta - Soṇakāyana

Refuting a claim that he teaches the annihilation of the world, the Buddha explains the four kinds of kamma to the brahmin Sikhāmoggallāna.

PTS 2.232

AN 4.235 Paṭhamasikkhāpada sutta - First Training Rule

The Buddha explains four kinds of kamma: dark deeds (breaking precepts), bright deeds (keeping precepts), mixed deeds, and neither dark nor bright deeds. The fourth category uniquely leads to the wearing away of all deeds.

PTS 2.233

Āpattibhaya vagga - The Chapter on Perils of Offenses

The Chapter on Perils of Offenses in the Book of the Fours, containing discourses 243–253.

AN 4.248 Paññāvuddhi sutta - Growth of Wisdom

The four qualities that lead to the growth of wisdom: associating with persons of integrity, listening to the good Dhamma, radical attention, and practicing in accordance with the Dhamma.

PTS 2.245

Abhiññā vagga - The Chapter on Direct Knowledges

The Chapter on Direct Knowledges in the Book of the Fours, containing discourses 254–263.

AN 4.254 Abhiññā sutta - directly knowing

The four things that should be fully comprehended, abandoned, developed, and personally realized by directly knowing.

PTS 2.246

Rāgapeyyāla - Abbreviated Texts Beginning with Greed

Abbreviated Texts Beginning with Greed in the Book of the Fours, containing discourses 274–783.

AN 4.276 Iddhipāda sutta - Psychic Power

The four bases of psychic powers that should be developed for the full understanding of passion, desire, and attachment.

PTS 2.256

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