Saichō

← Encyclopedia

Saichō (767–822), honored after his death as Dengyō Daishi — “Great Teacher who Transmitted the Teaching” — was the Japanese monk who founded the Tendai school and built its mother monastery, Enryaku-ji, on Mount Hiei above Kyoto. Of the two figures who remade Japanese Buddhism at the opening of the Heian period, he is the less storied — the legends gathered around his contemporary Kūkai — but the institution he left arguably shaped the religion of medieval Japan more than any other single foundation.

The mountain and the vow

He was born in Ōmi Province on the western shore of Lake Biwa, into a family, the Mitsu no Obito, that traced its descent to immigrants from the continent — a lineage at the margins of the Nara aristocracy rather than at its center. He entered religious life young, taking the tonsure as a boy and receiving full ordination at Tōdaiji, the great state temple of Nara, in 785, at around the age of nineteen. The Nara establishment was the only door into the monastic order that the state recognized: six licensed schools, a fixed ordination platform, a clergy counted and taxed and administered as an arm of government. Within months of passing through that door, Saichō walked back out of it. He withdrew alone to Mount Hiei, the forested peak rising northeast of the old capital, built a small grass hut, and set down a vow — a private renunciation of fame and ease, a resolve not to descend until he had grasped the Buddha’s mind. The hut grew into a meditation hall, the Ichijō Shikan-in, “the one-vehicle hall of calming and contemplation,” and the name already carried the whole of his future program: one vehicle, the single path on which all beings ride to buddhahood.

For a decade the retreat was obscure — a provincial ascetic on a mountain, copying scriptures, sitting in the Tiantai mode of meditation he had begun to read his way into. Then geography rewarded it. In 794 the court abandoned Nara and the short-lived Nagaoka site and moved the capital to Heian-kyō — the city that would become Kyoto — and the new capital lay directly at Hiei’s foot. In the continental geomancy the planners followed, the northeast was the kimon, the demon gate, the quarter through which malign influence entered and which a capital was bound to guard. Mount Hiei stood precisely on that guarding quarter. What had been a hermit’s exile became, by the accident of a relocated capital, a protective rampart over the imperial city, and Emperor Kanmu — who had moved the court partly to escape the entrenched power of the Nara temples — took the earnest provincial monk into his patronage. Saichō was named to the naigubu, the small body of chaplains who served the palace, and the obscure hut on the demon gate acquired a sovereign’s favor.

The voyage and the four strands

Kanmu’s patronage carried Saichō across the sea. In 804 he sailed with the official embassy to Tang China — a four-ship mission of the kind Japan sent only across decades — and Kūkai traveled in the same fleet, on another of its ships, a coincidence that would shape the rest of both men’s lives. Saichō went not as an unknown student but as a court-sponsored scholar with a defined commission and a translator-disciple at his side, and he made straight for the source. He spent the better part of a year at and around Mount Tiantai, the holy mountain in the southeast that had given its name to the school built on Zhiyi’s sixth-century reading of the Lotus Sutra. There he studied the Tiantai doctrine under the masters Daosui and Xingman, took the school’s whole textual apparatus by copy, and received the bodhisattva precepts. But he did not stop at one transmission. On the same journey he was initiated into esoteric ritual under the master Shunxiao, and received a line of Chan — the Niutou, or Oxhead, current of Chinese meditation Buddhism — so that what he carried home was deliberately plural: the Tiantai doctrine at the core, together with an esoteric initiation, a Chan transmission, and the bodhisattva precepts.

This fourfold inheritance is the distinctive shape of Tendai, and it was a design, not an accident. Where Kūkai would return and build a single, tightly unified esoteric system — the Shingon school, all of it organized around one initiatory cosmos — Saichō built a container meant to hold several modes of the path at once, on the conviction that they converged. The Lotus doctrine supplied the framework; esoteric ritual, Zen-style meditation, and the precepts were strands woven through it rather than rivals to it. The court licensed the new school in the first month of 806, granting it two annual ordinands set aside by imperial allotment — one assigned to the esoteric course, one to the meditation course — and with that grant Tendai entered the official register of Japanese Buddhism as a school in its own right, no longer a branch of the Nara learning. It had taken Saichō twenty years on the mountain to be recognized by the state he had walked away from.

One vehicle against the many

The Lotus Sutra’s central promise was, for Saichō, not one teaching among several but the measure of all the rest. The sutra proclaims a single vehicle — ekayāna — declaring the earlier distinctions of disciple, solitary buddha, and bodhisattva to have been provisional devices, skillful means by which the Buddha led beings of differing capacity toward the one destination that is open to all. Buddhahood, on this reading, is not the rare attainment of a gifted few but the latent and certain end of every being without exception. Against this stood the Hossō school, the Japanese inheritor of the Indian Yogācāra analysis, which taught a doctrine of five distinct natures: beings are sorted by an innate spiritual constitution, and among them are the icchantika, those whose nature contains no seed of awakening and who can therefore never become buddhas at all. Where the Lotus saw one road, Hossō saw a permanent partition in the order of things.

Saichō spent his later years defending the one vehicle in writing against the Hossō scholar Tokuitsu, a learned monk of the eastern provinces. The exchange ran through several rounds of treatise and counter-treatise; to Tokuitsu’s works asserting the three vehicles as final, Saichō answered with the Shugo kokkaishō — “Essays on Protecting the Nation” — and a series of related defenses, arguing that the Lotus is the Buddha’s direct and ultimate word, valid for all and reserved to none, and that the five-natures doctrine confined the unconfinable. The debate over whether the one vehicle or the three was the real teaching and which the provisional — the san-ichi gon-jitsu controversy — is reckoned among the great doctrinal disputes of Japanese history, and the universalism Saichō pressed in it became the permanent signature of his school: the refusal to grant that any being is shut out from the highest attainment.

The break with Kūkai

His relations with Kūkai began in warmth and ended in estrangement, and the arc of that friendship is one of the best-documented personal histories of the age. The two had crossed the sea together; back in Japan, Saichō — already the senior figure, court-favored and ten years older — recognized that the esoteric ritual he had gathered at Tiantai was thinner than the full system Kūkai had brought from the Tang capital, and he humbled himself to learn it from the younger man. He borrowed esoteric texts to copy, sent disciples to study, and in 812 received initiation from Kūkai. The correspondence between them survives, and in it Saichō’s deference is visible to the eye: in the letter known as the Kyūkakujō, written to his disciple Taihan, he begins a fresh line each time Kūkai’s name appears and addresses him by the honorific of a great teacher though he was the elder.

The friendship broke on two points. Saichō asked to borrow the Rishushakkyō, the commentary on the scripture of transcendent wisdom that Kūkai held to be a key esoteric text; Kūkai refused, on the principle that the deepest matter of the esoteric path cannot be transmitted through the written word at all but only through the rite, master to disciple, body to body — and that to lend the book was to mistake the husk for the kernel. The second wound was personal. Taihan, one of Saichō’s ablest disciples, went to study under Kūkai and did not come back; Saichō wrote repeatedly, urging his return to the mountain, and was refused. The rupture was, at bottom, a disagreement over how the esoteric reaches a person — whether it can be read or must be conferred — and it left the two founders, who might have built one Buddhism, building two. Tendai would develop its own esoteric tradition, the taimitsu, largely through the later journeys of Saichō’s successors; but the door Kūkai closed it never reopened.

The independent platform

The last fight of his life was institutional, and it was the most radical thing he attempted. Across the Buddhist world, a monk became fully a monk by ordination on the prātimokṣa — the elder code of some two hundred and fifty rules, conferred at a properly constituted platform before a quorum of senior monks. In Japan that platform was at Tōdaiji in Nara, under the control of the very establishment Saichō had left, and every Tendai ordinand was still made a monk by his rivals’ hands and their older code. Saichō petitioned the court to end this. In a series of statements drawn up in 818 and 819 — the Sange Gakushō Shiki, “Regulations for the Mountain School’s Students” — and defended at length in the Kenkairon of 820, he proposed that Mount Hiei ordain its own monks on the Mahayana bodhisattva precepts alone, the perfect-and-sudden precepts of the bodhisattva path, dispensing entirely with the prātimokṣa platform. His ordinands would then be sealed on the mountain for twelve years of unbroken training, neither leaving nor descending, before being sent out to serve the realm or to teach.

It was a break with how ordination had worked everywhere else in the Buddhist world — a claim that a community could constitute its clergy purely by the Mahayana precepts, without the monastic code the whole tradition had always treated as the ground of the order. The Nara schools opposed it fiercely, and for the rest of Saichō’s life the court withheld its answer. Permission came in 822, days after his death; he never saw the platform he had spent his last years arguing for, and the first independent Mahayana ordinations on Mount Hiei waited until 827, conferred under his successor Gishin. The title Dengyō Daishi followed in 866, in the reign of Emperor Seiwa — Japan’s first conferral of the daishi, “great teacher,” title, granted jointly with the Jikaku Daishi of his disciple Ennin, the third abbot of the mountain, whose nine years of travel in China would complete the esoteric inheritance Saichō had left unfinished.

The mountain’s afterlife and the record

What Saichō built outlasted every quarrel of his lifetime. The seminary on Mount Hiei became the great training ground of Japanese Buddhism, and the breadth of his fourfold container — doctrine, esotericism, meditation, precepts, held together by the conviction that all beings reach the one end — made the mountain a place where almost every later development could begin. The universalism he pressed against Tokuitsu, and the demanding twelve-year formation he wrote into his Regulations, together produced a school at once broad enough to shelter many paths and rigorous enough to forge originality out of them.

The documentary base for his life is unusually firm. The standard modern study is Paul Groner’s Saichō: The Establishment of the Japanese Tendai School (University of California, Berkeley Buddhist Studies Series, 1984; reissued by the University of Hawai’i Press, 2000), which reconstructs the institutional history from the surviving petitions, edicts, and correspondence; the school’s own Tendai-shū maintains the continuous institutional memory of the foundation, Dengyō Daishi’s life and teaching at its center. The Saichō–Kūkai relationship, and the larger question of how esoteric Buddhism was woven into the Heian court, is treated in Ryūichi Abé’s The Weaving of Mantra (Columbia University Press, 1999). Among the primary witnesses, the most intimate is Saichō’s own hand: the letter to Taihan known as the Kyūkakujō, a National Treasure preserved and digitized through Japan’s National Institutes for Cultural Heritage, in which the founder’s deference toward the younger Kūkai is legible in the spacing of the script itself. The Tendai school’s textual inheritance — the Lotus-centered Mahayana scriptures Saichō carried from the continent and made the curriculum of his mountain — survives in the great Mahayana collections, including the volume of the Sacred Books of the East hosted here. Of the founders he never met, several are documented in their own right: the Pure Land hymns of Shinran, who began as a Tendai monk on Hiei, reach English in the Buddhist Psalms translation.

Hiei trained Hōnen, Shinran, Eisai, Dōgen, and Nichiren — the founders, respectively, of the Pure Land schools including Shin Buddhism, of Rinzai and Sōtō Zen, and of the Nichiren tradition — who all began as Tendai monks on his mountain. His monastery became the door most of Japanese Buddhism walked through.

→ In the library: Buddhist Psalms — hymns of Shinran, who began as a Tendai monk (1921 tr.) · Buddhist Mahâyâna Texts (SBE 49 — Müller et al., 1894)

→ Related: Kukai Kobo Daishi · Mahayana · Buddhism · Jodo Shinshu Shin Buddhism · Japanese Mountain Asceticism Sangaku Shinko · Ennin · Shingon Japanese Esoteric Buddhism Mikkyo · Zen Buddhism Rinzai Soto · Korean Silla Buddhism · Buddha · Monasticism · Meditation