Knowledge Directory

Every door of the dharma.

106 entries on the teachings, the figures, the traditions, the texts, the practices, and the visual vocabulary of Buddhism. Research-grade. Cross-referenced. Anchored at Lumbini, where the path begins. The encyclopedia for the next 2,600 years.

Topics106

Categories8

Traditions7

Cross-references590

Featured

Six entries to begin with.

The doctrines, the emptiness teaching, the Vajrayana current, the great Mahayana sutra, the practice of insight, the wheel itself — six doors into the directory.

Gandharan relief of the Buddha's first sermon at Sarnath

Core Teachings

The Four Noble Truths

The diagnosis, the cause, the cure, the path

The Buddha's first teaching after awakening — delivered at Sarnath to the five ascetics — laid out the diagnosis of suffering, its cause, its cessation, and the path that leads beyond it. Every later teaching is a commentary on these four.

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Gilt bronze image of Nāgārjuna, teacher and philosopher of emptiness

ConceptsMahayana

Sunyata

Emptiness — the lack of inherent existence

Emptiness is the absence in all phenomena of independent, intrinsic existence. It is not nothingness but the positive recognition that everything arises in dependence on other things — the deepest reading of the Buddha's teaching.

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Tibetan tantric mandala of the forms of Manjushri, the bodhisattva of transcendent wisdom

TraditionsVajrayana

Vajrayana

The Diamond Vehicle / Tantric Buddhism

The Diamond Vehicle — the tantric path that uses mantra, visualization, deity yoga, and direct transmission to make buddhahood possible in a single lifetime, in this very body, provided one has the right empowerment from a qualified lineage holder.

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TextsMahayana

The Lotus Sutra

The Saddharma-Pundarika

The most influential Mahayana sutra in East Asia. The teaching of the One Vehicle, the eternal Buddha, and the universal possibility of buddhahood. Composed c. 1st century BCE to 1st century CE.

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Portrait of Mahasi Sayadaw, founder of the modern noting method of vipassana

PracticesTheravada

Vipassana — Insight Meditation

Seeing things as they actually are

The practice of seeing the three marks of existence — impermanence, suffering, non-self — directly in moment-to-moment experience. The Buddha's central method.

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Gilded eight-spoked dharma wheel flanked by two deer above a monastery entrance

Art & Symbols

The Dharma Wheel (Dharmachakra)

Eight spokes, one path

The wheel the Buddha set in motion at Sarnath — eight spokes for the Eightfold Path, the rim of moral discipline, the hub of meditative concentration. The oldest and most universal Buddhist symbol.

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01 · Core Teachings12/10

Core Teachings

The doctrines

The Four Noble Truths, the Eightfold Path, dependent origination, the three marks of existence, karma, rebirth, and the architecture of awakening.

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Core Teachings

The Four Noble Truths

Archival 1911 museum plate photograph of the Lion Capital of Ashoka from Sarnath, showing the dharma wheel carved on its abacus

Core Teachings

The Noble Eightfold Path

The fourth of the Four Noble Truths is the path itself — eight interrelated factors grouped under wisdom, ethical conduct, and mental discipline. It is the Buddha's prescription for the ending of suffering.

A stone Buddha head at Wat Mahathat, Ayutthaya, entwined and reclaimed by the roots of a Bodhi tree

Core Teachings

The Three Marks of Existence

Three characteristics belong to all conditioned phenomena: impermanence, unsatisfactoriness, and non-self. To see them clearly in one's own experience is the precondition of liberating insight.

A Bhavacakra (Wheel of Life) mural held in the jaws and claws of Yama, painted on a monastery wall

Core Teachings

Dependent Origination

The twelvefold chain by which ignorance gives rise to suffering, and the principle that nothing arises independently. The deepest of the Buddha's teachings, and the heart of the Madhyamaka analysis of emptiness.

Ancient Gandharan stone relief of devotees venerating dharma wheels on pillars, an aniconic-era depiction of the triratna

Core Teachings

The Three Jewels

Taking refuge in the Buddha, the Dharma, and the Sangha is the formal entry into the Buddhist path. The three jewels — tiratana in Pali, triratna in Sanskrit — are what the practitioner relies upon when the conditioned world will not bear weight.

Core Teachings

The Five Precepts

Five voluntary trainings undertaken by every lay Buddhist: to abstain from killing, stealing, sexual misconduct, false speech, and intoxicants. They are the minimum architecture of ethical life and the foundation on which all higher practice rests.

02 · Figures30/18

Figures

The Buddha, the disciples, the masters

Siddhartha Gautama and the great disciples who heard the teachings firsthand. The patriarchs and masters across two and a half millennia who carried the dharma forward.

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Figures

Siddhartha Gautama

The Shakya prince of Kapilavastu who left his palace, sat beneath the Bodhi tree, and set in motion the wheel of the dharma. The historical Buddha whose words seeded a tradition that now belongs to a fifth of humanity.

Figures

Queen Mayadevi

Princess of the Koliya clan, wife of Suddhodana of the Shakyas, mother of Siddhartha. She gave birth in a garden at Lumbini under a sal tree, and died seven days later. Tradition holds she was reborn in the Tushita heaven, where her son later visited her to teach the Abhidhamma.

Figures

Yashodhara

Wife of Siddhartha, mother of Rahula, princess of the Koliyas. Awoke one morning to find her husband gone in the night. Refused to remarry. Followed him into the order seven years after their son did, attained arahantship, and is recorded in the Therigatha as foremost in great supernormal powers.

Figures

Rahula

Born on the night of the great renunciation, named "fetter" by his departing father. Ordained at seven — the first child novice in the order. Foremost among the Buddha's disciples in the desire for training. Died young; the Buddha did not outlive him.

FiguresTheravada

Sariputta

Chief disciple of the Buddha, foremost in wisdom, the figure the Buddha called Dhammasenapati — Marshal of the Dhamma. The Anupada Sutta records him entering and emerging from the nine successive meditative attainments, examining the states one moment at a time. He died in his birth village, having returned to teach his mother.

FiguresTheravada

Mahamoggallana

The second chief disciple, Sariputta's friend from childhood. Foremost in the supernormal powers — the bhikkhu who could travel to other realms, hold the earth in place, and read the minds of beings. Murdered by rival ascetics shortly before his friend Sariputta's death.

03 · Traditions8/8

Traditions

The schools and lineages

Theravada, Mahayana, Vajrayana, Newar Buddhism, Zen, Pure Land, Nichiren. Each tradition is a complete path; together they are the dharma.

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TraditionsTheravada

Theravada

The oldest surviving school of Buddhism — the way of the elders. The tradition that preserved the Pali Canon, the monastic rule, and the path of the arahant across twenty-three centuries from Sri Lanka through Southeast Asia.

TraditionsMahayana

Mahayana

The Great Vehicle — the movement that reframed the Buddhist goal from individual liberation as an arahant to the universal awakening of all beings as a bodhisattva, and reframed the metaphysical ground from analysis of dharmas to the emptiness (sunyata) of all phenomena.

TraditionsVajrayana

Vajrayana

A gilded Newar Buddhist deity shrine with offerings in the Kathmandu Valley

TraditionsNewar

Newar Buddhism

The only surviving form of Indic Mahayana–Vajrayana Buddhism — preserved in the Kathmandu Valley for over a millennium through hereditary Vajracharya and Shakya priesthood, Sanskrit liturgy, and lay devotion to Swayambhu and the Pancha Buddha.

A Zen teacher seated in zazen meditation posture

TraditionsZen

Zen

The meditation school that strips Mahayana to its experiential core: a special transmission outside the scriptures, not founded on words and letters; pointing directly at the human mind, seeing into one's own nature, attaining buddhahood.

TraditionsPure Land

Pure Land

The largest devotional school in East Asian Buddhism — the path of rebirth in Sukhavati, the Pure Land of Amitabha, accessed not by self-power but by the saving vow of the Buddha himself, recited as Namo Amituofo, Namu Amida Butsu.

04 · Texts10/10

Texts

The canonical scriptures

The Pali Canon, the Mahayana sutras, the tantric corpus, the commentarial literature. The words of the Buddha and the lineage that preserved them.

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Sinhalese palm-leaf Buddhist manuscript bound with cord

TextsTheravada

The Pali Canon (Tipitaka)

The earliest complete Buddhist canon — preserved in Pali by the Theravada tradition and committed to writing in Sri Lanka in the first century BCE. Three baskets: discourses, monastic rules, and higher doctrine.

Gilded lacquer manuscript folios of Pali Buddhist scripture, British Library

TextsTheravada

The Dhammapada

If you read only one Buddhist text in your life, the Theravada tradition would tell you to read the Dhammapada — 423 verses of the Buddha's teaching, arranged in 26 chapters, on craving and freedom from craving.

Thai palm-leaf manuscript with gilded covers and an iron incising stylus

TextsTheravada

The Sutta Pitaka

The second basket of the Pali Canon — the Buddha's discourses, organized into five great collections (nikayas) preserving over ten thousand teachings.

TextsTheravada

The Vinaya Pitaka

The first basket of the Pali Canon — the rules of the monastic sangha, the case-history of how each rule arose, and the procedures of monastic governance.

Gilded and lacquered Burmese Kammavaca manuscript

TextsTheravada

The Abhidhamma Pitaka

The third basket — seven books of systematic philosophy mapping mind and matter into their irreducible components. The intellectual peak of the Pali tradition.

TextsMahayana

The Lotus Sutra

The most influential Mahayana sutra in East Asia. The teaching of the One Vehicle, the eternal Buddha, and the universal possibility of buddhahood. Composed c. 1st century BCE to 1st century CE.

05 · Practices12/12

Practices

The methods of awakening

Vipassana, samatha, metta, tonglen, zazen, mantra recitation, prostration, circumambulation. The actual doing of the dharma.

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PracticesTheravada

Vipassana — Insight Meditation

The practice of seeing the three marks of existence — impermanence, suffering, non-self — directly in moment-to-moment experience. The Buddha's central method.

Gandharan stone sculpture of a seated Buddha in meditation, 3rd century

Practices

Samatha — Calm Abiding

The practice of cultivating tranquility and one-pointed concentration. The companion to vipassana — the two yoked together carry the dharma.

Portrait of Sharon Salzberg, teacher of loving-kindness meditation

Practices

Metta — Loving-Kindness

The cultivation of unconditional good-will toward all beings. The first of the four brahmaviharas, the 'divine abidings' — and the antidote the Buddha gave to a forest of monks who could not stay in their forest.

Portrait of Pema Chödrön, who teaches tonglen widely in the West

PracticesVajrayana

Tonglen — Giving and Taking

The Tibetan practice of breathing in the suffering of others and breathing out one's own happiness in return. The bodhisattva's reversal of the ordinary impulse.

Dogen's 1233 manuscript of the Fukan Zazengi, the founding text of shikantaza

PracticesZen

Zazen — Just Sitting

The defining practice of the Zen tradition — sitting silently in upright posture, without object, without goal. Dogen's shikantaza: 'just sitting,' nothing added.

PracticesVajrayana

Mantra Recitation

The recitation of seed-syllables and sacred phrases — speech-mind training that pervades the Vajrayana, Pure Land, and Newar traditions. Om mani padme hum. Namo Amituofo. The Heart Sutra mantra.

06 · History10/10

History

The dharma across time

The councils, the spread across Asia, the universities, the diasporas, and the modern flourishing of Buddhism in the West.

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History

The First Buddhist Council

Three months after the Buddha's parinirvana, five hundred arahants gathered in the Sattapanni Cave at Rajagriha under the elder Mahakassapa to recite the discourses and the rule from memory. The First Council is the moment the dharma becomes a canon.

The Ananda Stupa with an Ashokan lion pillar at Vaishali, site of the Second Buddhist Council

History

The Three Councils

The three early councils — at Rajgir (c. 483 BCE), Vaishali (c. 383 BCE), and Pataliputra (c. 250 BCE under Ashoka) — that fixed the canon, produced the first schism between Sthaviravadins and Mahasamghikas, and dispatched the dharma across Asia.

Statue of the elder Mahinda, who carried the dharma to Sri Lanka in 247 BCE

HistoryTheravada

The Spread to Sri Lanka

In 247 BCE the emperor Ashoka's son Mahinda — a fully ordained arahant — flew (in the chronicles) or walked (in history) to Sri Lanka and converted King Devanampiya Tissa under a mango tree at Mihintale. Three weeks later the Bodhi tree sapling arrived and the southern transmission was rooted.

A Buddhist mural of a celestial dancer from the Mogao Caves at Dunhuang, on the Silk Road

HistoryMahayana

The Spread to China — The Silk Road

The dharma traveled into China across the Silk Road in the first centuries CE, carried by Central Asian monks like An Shigao and Lokakshema, translated into Chinese over six centuries by Kumarajiva, Xuanzang, and Yijing, and rooted in the founding of the Chinese schools — Tiantai, Huayan, Chan, Pure Land, and Faxiang.

Samye Monastery, the first Buddhist monastery in Tibet, founded 779 CE

HistoryVajrayana

The Spread to Tibet

In 779 CE the Tibetan king Trisong Detsen invited two masters from India — Santaraksita from Nalanda and Padmasambhava from Oddiyana — to establish the dharma on the plateau. The double transmission of monastic scholarship and tantric realization founded Tibetan Buddhism for twelve centuries.

The brick ruins of Nalanda, the great Mahayana monastic university of ancient India

HistoryMahayana

Nalanda University

For seven hundred years Nalanda was the largest monastic university in the world — ten thousand students, two thousand teachers, a library of millions of folios, and the institutional heart of Indian Mahayana philosophy until its destruction by Bakhtiyar Khilji in 1193.

07 · Art & Symbols8/8

Art & Symbols

The visual vocabulary

The dharma wheel, the lotus, the stupa, the mandala, the mudras, the thangka. How the dharma takes form in image and architecture.

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Art & Symbols

The Dharma Wheel (Dharmachakra)

The wheel the Buddha set in motion at Sarnath — eight spokes for the Eightfold Path, the rim of moral discipline, the hub of meditative concentration. The oldest and most universal Buddhist symbol.

Art & Symbols

The Lotus

The flower that rises from mud unstained — the universal Buddhist emblem of awakening within and despite the conditioned world. Throne, offering, symbol, state.

Art & Symbols

The Stupa

The reliquary monument — the original Buddhist architectural form. A hemispherical dome containing relics, walked clockwise by pilgrims for 2,500 years. The vertical axis of the Buddhist world.

Tibetan Manjuvajra mandala thangka with forty-three deities

Art & SymbolsVajrayana

The Mandala

The geometric diagram of a buddha-field — used in tantric practice as a visualized residence of the deity, traced in sand, painted on cloth, embodied in temple architecture.

Bronze Buddha from Nalanda displaying the dharmachakra mudra, ca. 9th–10th century

Art & Symbols

Mudras — The Hand Gestures

Symbolic hand gestures in Buddhist art and practice. Bhumisparsha (touching the earth), dharmachakra (turning the wheel), dhyana (meditation), abhaya (fearlessness), varada (boon-giving) — each gesture both an artistic convention and a contemplative instruction.

Art & SymbolsVajrayana

Thangka Painting

The painted scroll tradition of Tibet and the Himalaya — buddha-images on cotton or silk, ground from mineral pigments, used as supports for visualization practice. Centuries of lineage transmitted in line and color.

08 · Concepts16/10

Concepts

The vocabulary of awakening

Sunyata, tathagatagarbha, anatta, samsara, the bardo, the two truths. The conceptual ground of Buddhist thought.

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ConceptsMahayana

Sunyata

Ancient Gandharan schist statue of the seated, meditating Buddha from the Swat Valley, Pakistan

Concepts

Anatta

The second of the three marks: that nothing whatsoever bears within itself a permanent, independent, unchanging self. Not the body, not the feelings, not the perceptions, not the formations, not even consciousness.

The full moon emerging from behind dark clouds, illustrating the essay's own image of buddha-nature briefly obscured but never diminished

ConceptsMahayana

Tathagatagarbha

The doctrine that every sentient being possesses, intrinsically, the seed of complete awakening. The "womb" or "embryo" of the Tathāgata — a teaching central to East Asian Buddhism, the Vajrayana, and the third turning of the wheel.

ConceptsMahayana

The Two Truths

Reality has two registers: the conventional truth of everyday appearances and the ultimate truth of emptiness. The Madhyamaka teaches that liberation requires understanding both — and the relation between them.

Ancient Indian stone statue of Avalokiteshvara, the bodhisattva of compassion, holding a lotus

Concepts

Karuna

Compassion as the spontaneous wish that all beings be free from suffering. In the Mahayana, karuna is the second of the four immeasurables and, together with wisdom, the very engine of the bodhisattva path.

Antique ink drawing of the Bhavacakra — the Wheel of Life — held by Yama, Lord of Death, from the Wellcome Collection

Concepts

Samsara

The beginningless round of birth, aging, death, and rebirth, driven by ignorance and craving. Samsara is the predicament from which the dharma offers release.