Codex of FaithsAn illustrated atlas of belief

5th century BCE · The Ganges plain, northern India

How Buddhism began with the awakening of Siddhartha Gautama, what it teaches about suffering and its end, how it is practised, and how it spread across Asia.

Began
The Ganges plain, northern India
When
5th century BCE
Founder
Siddhartha Gautama, called the Buddha (“the awakened one”)
Followers
324 million (2020)
Main branches
Theravada, Mahayana, Vajrayana
Scriptures
Pali Canon (Tipitaka), Mahayana sutras

In brief

  1. Buddhism traces itself to Siddhartha Gautama, a teacher of the Ganges plain whom followers call the Buddha, “the awakened one”.
  2. Its core teaching is the Four Noble Truths: life involves suffering, suffering arises from craving, it can end, and the Eightfold Path leads to that end.
  3. It has no creator god at its centre. Practice turns on ethics, meditation and wisdom, supported by the community of monks, nuns and lay followers.
  4. About 324 million people were Buddhist in 2020, nearly all of them in Asia and the Pacific.

From the text

Manopubbaṅgamā dhammā, manoseṭṭhā manomayā.

“Mind precedes all things; mind is their chief; they are made by mind.”

Dhammapada, verse 1

The holy book

Pali Canon

Tipiṭaka

Language
Pali
Written
Passed on orally; written down in Sri Lanka in the 1st century BCE
Contents
Three “baskets”: Vinaya, Sutta and Abhidhamma

The Pali Canon is the scripture of Theravada Buddhism and the oldest complete collection of Buddhist texts to survive. Its name, Tipitaka, means “three baskets”. The Vinaya Pitaka holds the rules of the monastic order and the stories of how they arose. The Sutta Pitaka gathers the discourses of the Buddha and his leading disciples, from the first sermon on the Four Noble Truths to long dialogues on meditation, ethics and rebirth. The Abhidhamma Pitaka analyses mind and matter in systematic detail.

Within the Sutta Pitaka lies the Dhammapada, the best-loved text of the canon: 423 short verses on the mind, craving, kindness and the path to nirvana. Its first lines teach that the mind leads all things, and that suffering or happiness follow from how one thinks and acts. Printed in full, the canon fills dozens of volumes; Mahayana and Vajrayana Buddhists keep many parallel texts in Chinese and Tibetan translation.

Monks and nuns study the canon and chant passages from it daily, and on full-moon days lay people gather at temples to hear them. Protective verses called paritta are recited at weddings, house blessings and funerals. In Sri Lanka, Myanmar and Thailand, copying, printing or sponsoring the scriptures is a meritorious act, and old manuscripts on palm leaves are treasured. Many children and adults learn verses of the Dhammapada by heart.

In pictures

  • The gilded stupa of a great pagoda, said to enshrine relics of four BuddhasShwedagon Pagoda, Yangon, Myanmar
  • Latticed stupas on the upper terraces of a ninth-century Buddhist monumentBorobudur, Java, Indonesia
  • A colossal bronze Buddha in one of the largest wooden halls in the worldTōdai-ji, Nara, Japan
  • A gilded Buddha crowned with a flaming haloChinese Buddhist temple
  • The former winter palace of the Dalai Lamas, rising over LhasaPotala Palace, Lhasa, Tibet
  • A monastery built against a cliff where Padmasambhava is said to have meditatedParo Taktsang, Bhutan
Photo credits
  1. Shwedagon Pagoda, Yangon, Myanmar · Marcin Konsek, CC BY-SA 4.0
  2. Borobudur, Java, Indonesia · CEphoto, Uwe Aranas, CC BY-SA 3.0
  3. Tōdai-ji, Nara, Japan · sailko, CC BY-SA 3.0
  4. Chinese Buddhist temple · Photo Dharma from Sadao, Thailand, CC BY 2.0
  5. Potala Palace, Lhasa, Tibet · Laika ac from UK, CC BY-SA 2.0
  6. Paro Taktsang, Bhutan · Nina R, CC BY 2.0

Redrawn for this site as illustrated plates from the photographs above: cropped, recoloured, outlined, and with night skies painted in. The adapted images are shared under the same licences.

Chapter I

The awakened one

Buddhism begins with a man born in the foothills of the Himalaya, at Lumbini in what is now Nepal. Siddhartha Gautama was the son of a ruling family of the Shakya clan. Tradition says he grew up in comfort, then left home at twenty-nine after seeing old age, sickness and death for the first time.

For six years he studied with teachers and tried harsh fasting. Neither brought the freedom he was looking for. He then chose a “middle way” between indulgence and self-denial, sat beneath a fig tree at Bodh Gaya and meditated until, Buddhists believe, he awoke to the truth about suffering and its end. From then on he was called the Buddha, “the awakened one”.

He gave his first sermon in the deer park at Sarnath, near Varanasi, and spent the next forty-five years teaching across the Ganges plain. He died at about eighty at Kushinagar. Historians place his life somewhere between the 6th and the 4th centuries BCE; many now put his death around 400 BCE.

In the 3rd century BCE the Indian emperor Ashoka supported the teaching and sent envoys beyond his empire. From there it travelled south to Sri Lanka, north-west to Gandhara and, along the Silk Roads, to China, Korea, Japan and Tibet. In India itself Buddhism faded after the 12th century, while it flourished elsewhere in Asia.

70° E90° E110° E130° E 10° N20° N30° N40° N50° N Equator Bodh Gaya · 5th c. BCE Bodh Gaya: 5th c. BCE Gandhara · 3rd c. BCE Gandhara: 3rd c. BCE Sri Lanka · 3rd c. BCE Sri Lanka: 3rd c. BCE China · 1st c. CE China: 1st c. CE Korea · 4th c. Korea: 4th c. Japan · 6th c. Japan: 6th c. Tibet · 7th c. Tibet: 7th c. Java · 8th c. Java: 8th c. Burma · 11th c. Burma: 11th c. Siam · 13th c. Siam: 13th c. Mongols · 16th c. Mongols: 16th c. The road of the teaching where it began arrival, approximate date N
  1. 5th c. BCE Bodh Gaya
  2. 3rd c. BCE Gandhara
  3. 3rd c. BCE Sri Lanka
  4. 1st c. CE China
  5. 4th c. Korea
  6. 6th c. Japan
  7. 7th c. Tibet
  8. 8th c. Java
  9. 11th c. Burma
  10. 13th c. Siam
  11. 16th c. Mongols
Chapter II

Councils, kings and crossings

After the Buddha’s death, tradition says, his disciples met at Rajagriha to recite his teaching and the monastic rules, and a second council met at Vaishali about a century later. Disputes over discipline led to the first great division of the Sangha, between the Sthaviras, “elders”, and the Mahasanghikas, “great community”. These split further into what Buddhist sources count as eighteen early schools, of which only the Theravada survives today.

Ashoka’s support in the 3rd century BCE made Buddhism an imperial religion for the first time. His edicts, carved on rocks and pillars, promote the Dharma as ethics and tolerance, and tradition credits his son Mahinda with bringing the teaching to Sri Lanka. In the first centuries CE the Kushan rulers of the north-west, above all Kanishka, endowed monasteries in Gandhara, where some of the earliest images of the Buddha in human form were made. Great monastic universities such as Nalanda, founded in about the 5th century, drew students from across Asia.

Merchants and monks carried the teaching along the Silk Roads, and it reached China by the 1st century CE. Translators such as Kumarajiva, around 400, made Indian texts readable in Chinese, and under the Tang dynasty Chinese schools such as Chan and Pure Land took shape. Buddhism passed to Korea in the 4th century and from Korea to Japan in the 6th. Its fortunes in China were not always secure: in 845 Emperor Wuzong ordered thousands of monasteries closed and sent hundreds of thousands of monks and nuns back to lay life. In Tibet, where kings invited Indian teachers, the monastery of Samye was founded in about 779, and in Java the Shailendra kings built Borobudur around 800.

In India itself Buddhism slowly lost ground. Historians point to several causes: the revival of Hindu devotion, dependence on royal patronage, and finally the destruction of great monasteries, including Nalanda, in Turkic raids around 1200. Theravada, meanwhile, grew stronger in the south. Kings such as Anawrahta of Pagan in the 11th century and Parakramabahu I of Sri Lanka in the 12th reformed and unified the Sangha, and Theravada became the main religion of Burma, Thailand, Laos and Cambodia.

Elsewhere new schools arose. In Japan the Kamakura period (1185–1333) saw movements founded by Honen, Shinran, Dogen and Nichiren, which still shape Japanese Buddhism. In Tibet, Tsongkhapa (1357–1419) inspired the Gelug school, whose leading lama received the title Dalai Lama from the Mongol ruler Altan Khan in 1578; in 1642 the fifth Dalai Lama became ruler of Tibet with Mongol support.

Colonial rule and modern ideas brought both pressure and revival. Christian missions challenged Buddhists in Sri Lanka and Burma, and reformers such as Anagarika Dharmapala, who founded the Maha Bodhi Society in 1891, answered with a modern Buddhism that stressed reason, meditation and ethics; the American Henry Steel Olcott helped found Buddhist schools in Sri Lanka. In Japan the Meiji government separated Buddhism from Shinto after 1868, and many temples were closed. Western scholars translated the Pali texts, and Buddhism became known to readers in Europe and America.

The 20th century brought both loss and new beginnings. Communist governments suppressed Buddhism in Mongolia, China and, under the Khmer Rouge (1975–79), Cambodia. After Chinese forces entered Tibet in 1950, the fourteenth Dalai Lama fled to India in 1959. In 1956 B. R. Ambedkar led hundreds of thousands of Dalits to convert at Nagpur, reviving Buddhism in the land of its birth, and the Sixth Council met in Rangoon from 1954 to 1956. Asian teachers and Western converts have since carried meditation to Europe and the Americas, and socially engaged movements, such as that of the Vietnamese monk Thich Nhat Hanh, link practice to peace and social work.

  1. c. 400 BCE The Buddha dies at Kushinagar, by many modern estimates.
  2. c. 260 BCE Ashoka turns to the Dharma after his bloody conquest of Kalinga.
  3. 3rd century BCE Mahinda, traditionally Ashoka’s son, brings Buddhism to Sri Lanka.
  4. traditionally 68 CE White Horse Temple founded at Luoyang, China’s first Buddhist temple.
  5. 538 or 552 Buddhism reaches Japan from the Korean kingdom of Baekje.
  6. c. 779 Samye, Tibet’s first monastery, founded under King Trisong Detsen.
  7. 845 Emperor Wuzong of Tang closes thousands of monasteries across China.
  8. c. 1200 Nalanda and other great Indian monasteries destroyed in Turkic raids.
  9. 1642 The fifth Dalai Lama becomes ruler of Tibet with Mongol support.
  10. 1956 B. R. Ambedkar and hundreds of thousands of Dalits convert at Nagpur.
  11. 1959 The fourteenth Dalai Lama flees Tibet for exile in India.
Chapter III

Four truths and a path

Tradition holds that the first sermon set out the Four Noble Truths. Life involves dukkha, a word that covers suffering, stress and the unsatisfying nature of things that do not last. Dukkha arises from craving. It can cease completely: that cessation is nirvana Literally “blowing out”: the end of craving and suffering, and release from rebirth, in Buddhism. Glossary. And there is a path that leads to it.

That path is the Noble Eightfold Path, often grouped in three parts: wisdom (right view and intention), ethics (right speech, action and livelihood) and meditation (right effort, mindfulness and concentration). The eight are practised together, like the spokes of a wheel, not one after another.

Two further ideas shape Buddhist thought. karma Action and its consequences. Good and bad deeds shape a person’s future, in this life and in lives to come. Glossary is the teaching that intentional actions shape future experience, within this life and beyond it. Rebirth follows from karma: beings pass from life to life until craving ends. Buddhism also teaches anatta, “not-self”: nothing in a person is a fixed, unchanging self.

The Buddha is honoured as a teacher who found the way, not as a creator god. Many traditions recognise gods and spirits, but as beings who are themselves still in the cycle of rebirth.

12345678 The FourNoble Truths

The Four Noble Truths

  1. iThere is suffering
  2. iiIt arises from craving
  3. iiiIt can cease
  4. ivA path leads there

The Noble Eightfold Path

  1. 1Right view
  2. 2Right intention
  3. 3Right speech
  4. 4Right action
  5. 5Right livelihood
  6. 6Right effort
  7. 7Right mindfulness
  8. 8Right concentration
Chapter IV

Ways of practice

At the heart of Buddhist life stand the Three Jewels: the Buddha, his teaching (the Dharma) and the community (the Sangha). A person becomes Buddhist by “taking refuge” in the three.

The Sangha in its narrow sense is the order of monks and nuns, who live by detailed monastic rules. Lay followers support them with food, robes and gifts, and in return receive teaching. In Theravada countries many young men spend a period as novices.

Practice looks very different from one country to another. A Thai villager may offer food to monks at dawn, a Japanese family may chant the name of Amitabha Buddha at a home altar, a Tibetan pilgrim may walk around a sacred mountain, and a meditator in Europe may sit in silence for a week. What they share is the aim of reducing craving and cultivating wisdom and compassion.

  • Meditation

    Calming the mind and seeing clearly: breath, loving-kindness, insight. Central for monks and nuns, and for many lay people.

  • Taking refuge

    Committing to the Three Jewels: the Buddha, the Dharma (his teaching) and the Sangha (the community).

  • The five precepts

    Lay ethics: no killing, no stealing, no sexual misconduct, no false speech, no intoxicants.

  • Offerings and almsgiving

    Flowers, light and incense before images; food given to monks each morning in Theravada lands.

  • Chanting

    Recitation of texts and mantras, alone or together, in Pali, Sanskrit, Chinese, Tibetan or Japanese.

  • Pilgrimage

    To the four sites of the Buddha’s life: Lumbini, Bodh Gaya, Sarnath and Kushinagar.

Chapter V

The scriptures

For the first centuries the Buddha’s words were passed on by memory and chanted recitation. The oldest complete collection to survive is the Pali Canon, written down in Sri Lanka in the 1st century BCE.

From around the same time, new texts called sutra A scripture or discourse; in Buddhism, a teaching attributed to the Buddha. Glossary appeared in India, presenting themselves as further teachings of the Buddha. They became the basis of Mahayana Buddhism. Translated into Chinese and Tibetan, they grew into canons of thousands of works. There is no single Buddhist Bible: each tradition gives authority to its own collection.

  • Pali Canon (Tipitaka)

    Pali

    “Three baskets” of discourses, monastic rules and analysis. Written down in Sri Lanka in the 1st century BCE after centuries of oral recitation. Authoritative in Theravada.

  • Mahayana sutras

    Sanskrit, Chinese

    Texts such as the Lotus Sutra, the Heart Sutra and the Diamond Sutra, composed from about the 1st century BCE.

  • Chinese canon

    Classical Chinese

    The vast collection used in East Asia, printed in full for the first time in the 10th century.

  • Tibetan canon

    Tibetan

    The Kangyur (words of the Buddha) and the Tengyur (commentaries), translated mostly from Sanskrit.

Chapter VI

Three great vehicles

Buddhists often describe their tradition in terms of “vehicles” that carry people to awakening. Theravada, “the way of the elders”, keeps the Pali Canon and is the main form in Sri Lanka and mainland Southeast Asia. Mahayana, “the great vehicle”, developed from around the 1st century BCE and became the Buddhism of China, Korea, Japan and Vietnam. Vajrayana, “the diamond vehicle”, grew out of Mahayana and is practised in Tibet, Mongolia and the Himalaya.

Within Mahayana, schools such as Zen (Chan in China) and Pure Land became especially widespread. The lines between them are not sharp: many temples combine meditation, devotion and ritual.

Theravada from the 3rd c. BCE Vajrayana from about the 7th c. CE Zen and Chan from about the 6th c. CE Pure Land from about the 5th c. CE Mahayana from about the 1st c. BCE Early Buddhism 5th–3rd c. BCE
Early Buddhism
Ganges plain. The teaching passed on orally by the first communities of monks and nuns.
Theravada
Sri Lanka, Myanmar, Thailand, Laos, Cambodia. “The way of the elders”: keeps the Pali Canon and the ideal of the arahant, one who has reached nirvana.
Mahayana
China, Korea, Japan, Vietnam. “The great vehicle”: new sutras and the ideal of the bodhisattva, who seeks awakening for the sake of all beings.
Vajrayana
Tibet, Mongolia, Bhutan, the Himalaya. “The diamond vehicle”: adds tantric ritual, mantras and visualisation to Mahayana teaching.
Zen and Chan
China, Japan, Korea, Vietnam. Schools that put seated meditation and direct insight before study of texts.
Pure Land
China, Japan. Devotion to the Buddha Amitabha and rebirth in his “pure land”; the largest school in Japan.
Chapter VII

Buddhism today

About 324 million people were Buddhist in 2020, roughly 4% of the world’s population, according to the Pew Research Center. Nearly all live in Asia and the Pacific. Buddhists form large majorities in Cambodia, Thailand, Myanmar and Sri Lanka, and large minorities in countries such as China, Japan and South Korea, where many people combine Buddhist practice with other traditions.

Buddhism was the only major religion whose numbers fell between 2010 and 2020. Since the 20th century it has also taken root in Europe, the Americas and Australia, through migration and through converts drawn especially to meditation.

324 million

Buddhists in 2020, about 4% of the world

98 in 100 live in Asia and the Pacific

Where they are the majority

  • Cambodia97%
  • Thailand94%
  • Myanmar89%
  • Sri Lanka70%

Largest populations

  • Thailand 68 million
  • China 53 million
  • Myanmar about 45 million

Their number fell from 343 million in 2010, mostly through ageing and people leaving religion in East Asia. Source: Pew Research Center, 2025.

Clergy and religious life

Who leads, teaches and serves, each drawn in the dress that marks the role.

Symbols

The year

JanFebMarAprMayJunJulAugSepOctNovDec The year most dates follow the moon Vesak Asalha Puja Obon Kathina Bodhi Day Losar
Losar →
February or March. The Tibetan new year, with prayers, offerings and cleansing rites.
Vesak →
Usually the full moon of May. The birth, awakening and death of the Buddha, remembered on one day in Theravada lands.
Asalha Puja
Full moon of July. The first sermon at Sarnath; the start of the rains retreat for monks.
Obon →
July or August. Japanese festival for the spirits of ancestors, with lanterns and dances.
Kathina
October or November. Lay people offer new robes to monks at the end of the rains retreat.
Bodhi Day
8 December. The awakening under the bodhi tree, kept on this date in Japan and in many Mahayana communities.

Questions people ask

Do Buddhists believe in God?

Buddhism does not teach a creator god, and the Buddha is honoured as a teacher who awoke, not as a god. Many Buddhist traditions do recognise gods and other beings, but as beings within the cycle of rebirth, not as the source of liberation.

What is nirvana?

Nirvana (Pali nibbana) means “blowing out”, as of a flame. It is the end of craving, of suffering and of the cycle of rebirth. Buddhist texts describe it mostly by what it is not.

What is the difference between Theravada and Mahayana?

Theravada keeps the Pali Canon and the ideal of the arahant, who reaches nirvana. Mahayana adds later sutras and the ideal of the bodhisattva, who seeks awakening for all beings. Theravada prevails in Sri Lanka and mainland Southeast Asia, Mahayana in East Asia.

When did the Buddha live?

Tradition places his life in the 6th and 5th centuries BCE (often 563–483 BCE). Many historians now place his death closer to 400 BCE. All agree that he lived to about eighty.

Test what you know

8 questions on Buddhism, each answer explained. More quizzes

  1. Question 1 of 8

    Where did Siddhartha Gautama awaken, Buddhists believe?

    Show the answer

    Bodh Gaya. He was born at Lumbini, awoke beneath a fig tree at Bodh Gaya, gave his first sermon at Sarnath and died at Kushinagar.

  2. Question 2 of 8

    The first of the Four Noble Truths is about…

    Show the answer

    Dukkha: suffering and unsatisfactoriness. There is dukkha; it arises from craving; it can cease; and a path leads there.

  3. Question 3 of 8

    The eight spokes of the dharma wheel stand for…

    Show the answer

    The Noble Eightfold Path. The wheel recalls the teaching set in motion at the first sermon.

  4. Question 4 of 8

    Which collection of scriptures does Theravada Buddhism keep?

    Show the answer

    The Pali Canon. The Pali Canon, the “three baskets”, was written down in Sri Lanka in the 1st century BCE.

  5. Question 5 of 8

    The ideal of the bodhisattva, who seeks awakening for all beings, is central to…

    Show the answer

    Mahayana. Theravada holds up the arahant; Mahayana adds later sutras and the bodhisattva ideal.

  6. Question 6 of 8

    Which Indian emperor turned to the Dharma after his bloody conquest of Kalinga?

    Show the answer

    Ashoka. Ashoka’s support around 260 BCE made Buddhism an imperial religion; his edicts promote ethics and tolerance.

  7. Question 7 of 8

    What does anatta mean?

    Show the answer

    Not-self: nothing in a person is a fixed self. Buddhism teaches that no part of a person is a fixed, unchanging self.

  8. Question 8 of 8

    According to Pew, which major religion was the only one whose numbers fell between 2010 and 2020?

    Show the answer

    Buddhism. Buddhists fell from 343 million to 324 million, mostly through ageing and people leaving religion in East Asia.

Sources and further reading

  1. Pew Research Center, “How the Global Religious Landscape Changed From 2010 to 2020: Buddhists” (2025)
  2. Encyclopaedia Britannica, “Buddhism”
  3. Peter Harvey, An Introduction to Buddhism: Teachings, History and Practices, 2nd ed. (Cambridge University Press, 2013)
  4. Rupert Gethin, The Foundations of Buddhism (Oxford University Press, 1998)
  5. Dhammacakkappavattana Sutta (Setting the Wheel of Dhamma in Motion), SN 56.11, on SuttaCentral