Eisai and Zen: Why Purity Does Not Survive Compromise

In the history of Japanese Zen, the first figure to transmit the Rinzai school was Eisai (1141–1215).

Looking back, we can see that although Eisai was the first to transmit Zen to Japan, his path was largely one of political compromise with the established Buddhist sects. For that reason, the uncompromising, pure atmosphere of Zen did not take root in Japan during his lifetime.

Intriguingly, Zen developed in direct response to the rise of a new age driven by the power of the samurai.

Desiring to break free from what he saw as the corruption of Japanese Buddhism and its monastic establishment, Eisai crossed the sea in 1168 to Song China, whose cultural prestige was then unmatched. In Japan, 1168 was a turning point: for the first time, warrior leaders were eclipsing court aristocrats to seize national authority.

Eisai returned to Japan after his first journey, but by then the Taira regime had grown increasingly fragile. In 1185, he set sail for Song China a second time.

In the brief span of little more than twenty years since Eisai had first set out for China, Japan had been utterly remade. It had entered the dynamic age of the samurai.

Determined to offer a new vision of practice, Eisai gave the first lectures on Zen ever held in Japan, sharing what he had brought back from China. That historic milestone took place in Hirado, in modern Nagasaki Prefecture. After planting the seeds of Zen there, Eisai moved on to Kyoto with the intention of establishing an independent Zen school, free from the traditional Buddhist sects.

Faced with this resistance, Eisai—a monk of vast experience—attempted to ease the confrontation by seeking an accommodation with established Buddhist doctrines, while simultaneously petitioning the imperial court for protection. He reasoned that an official imperial sanction would leave the rival clergy with no choice but to hold their tongues.

In a Kyoto paralyzed by vested interests, matters did not go as he hoped. The hostility of the established monks deepened day by day, until the atmosphere grew so volatile that Eisai began to fear assassination.

The court aristocrats in Kyoto lived in symbiotic dependence upon the emperor, intertwined in a web of mutual interest with the monastic armies of Mount Hiei and Nara; there was simply no way to break through that circle.

He therefore abandoned Kyoto and headed east to Kamakura—the seat of the Minamoto clan—where a rising warrior class cultivated a fiercely independent, anti-Kyoto spirit.

Kamakura, by contrast, had established its own samurai government under Minamoto no Yoritomo.

In Kamakura, Eisai was granted an audience with the second shogun, Minamoto no Yoriie (1182–1204). Furthermore, Yoriie's mother, Hojo Masako (1157–1225)—the widow of the first shogun, Yoritomo—was deeply moved by Eisai's teaching and took refuge in Zen.

That temple was Jufuku-ji, which still stands in Kamakura today. Having won the trust of the eastern rulers and gained the formidable backing of the Minamoto clan, Eisai was able, two years later, to build Kennin-ji in Kyoto itself.

Yet by then he was already an old man; he died before his vision of propagating Zen across Japan could be brought to completion.

Yet in the very year of Eisai's death, the figure who would truly establish Zen in Japan had already been born. When Eisai passed away, a sixteen-year-old youth was studying under his disciples at Kennin-ji in Kyoto.

Having witnessed the staunchly anti-Buddhist Mononobe clan fall from grace and disappear forever, Kamatari read the times with cold pragmatism and sought political equilibrium—an attitude essential to the Fujiwara’s rise. The key to the new era lay not in choosing between Shinto and Buddhism, but in utilizing whatever could serve political power. Most ancient clans failed to grasp this distinction.

Fuhito himself contributed directly to the development of Kofuku-ji in Nara, the Fujiwara family temple, and supported temple construction and the compilation of Buddhist scriptures. Kofuku-ji originated in Yamashina-dera, founded by Kamatari’s wife, and flourished when moved to the new capital of Nara under Fujiwara patronage, eventually becoming the most authoritative temple in the realm. Under Fuhito, other major state-protecting temples, including Yakushi-ji and Daian-ji, were systematically expanded, binding Buddhism inextricably to statecraft.

The true reason Buddhism penetrated so deeply into Japan was not primarily the spiritual superiority of its doctrine, but its immense political utility. This unvarnished reality, rarely discussed, becomes unmistakable when one traces the arc of history from the Soga to the rise of the Fujiwara.