, born posthumously called , was a Japanese Buddhist monk, calligrapher, and poet who founded the esoteric Shingon school of Buddhism. He travelled to China, where he studied Tangmi (Chinese Vajrayana Buddhism) under the monk Huiguo. Upon returning to Japan, he founded Shingon—the Japanese branch of Vajrayana Buddhism. With the blessing of several Emperors, Kūkai was able to preach Shingon teachings and found Shingon temples. Like other influential monks, Kūkai oversaw public works and constructions. Mount Kōya was chosen by him as a holy site, and he spent his later years there until his death in 835 CE.
Because of his importance in Japanese Buddhism, Kūkai is associated with many stories and legends. One such legend attributes the invention of the kana syllabary to Kūkai, with which the Japanese language is written to this day (in combination with kanji), as well as the Iroha poem, which helped to standardise and popularise kana.
Shingon followers usually refer to Kūkai by the honorific title of , and the religious name of .
Biography
Early years
Kūkai was born in 774 in the precinct of Zentsū-ji temple, in Sanuki province on the island of Shikoku. His family were members of the aristocratic Saeki family, a branch of the ancient Ōtomo clan. In modern scholarship, his first name is generally believed to be Mao ("True Fish"), although one source records his birth name as Tōtomono ("Precious One"). Kūkai was born in a period of important political changes with Emperor Kanmu (r. 781–806) seeking to consolidate his power and to extend his realm, taking measures which included moving the capital of Japan from Nara ultimately to Heian (modern-day Kyoto).
Little more is known about Kūkai's childhood. At the age of fifteen, he began to receive instruction in the Chinese classics under the guidance of his maternal uncle. During this time, the Saeki-Ōtomo clan suffered government persecution due to allegations that the clan chief, Ōtomo Yakamochi, was responsible for the assassination of his rival Fujiwara no Tanetsugu. The family fortunes had fallen by 791 when Kūkai journeyed to Nara, the capital at the time, to study at the government university, the . Graduates were typically chosen for prestigious positions as bureaucrats. Biographies of Kūkai suggest that he became disillusioned with his Confucian studies, but developed a strong interest in Buddhist studies instead.
Around the age of 22, Kūkai was introduced to Buddhist practice involving chanting the mantra of Kokūzō (Sanskrit: Ākāśagarbha), the bodhisattva of the void. During this period, Kūkai frequently sought out isolated mountain regions where he chanted the Ākāśagarbha mantra relentlessly. At age 24 he published his first major literary work, Sangō Shiiki, in which he quotes from an extensive list of sources, including the classics of Confucianism, Daoism, and Buddhism. The Nara temples, with their extensive libraries, possessed these texts.
During this period in Japanese history, the central government closely regulated Buddhism through the and enforced its policies, based on the ritsuryō legal code. Ascetics and independent monks, like Kūkai, were frequently banned and lived outside the law, but still wandered the countryside or from temple to temple.
During this period of private Buddhist practice, Kūkai had a dream, in which a man appeared and told Kūkai that the Mahavairocana Tantra is the scripture which contained the doctrine Kūkai was seeking. Though Kūkai soon managed to obtain a copy of this sutra which had only recently become available in Japan, he immediately encountered difficulty. Much of the sutra was in untranslated Sanskrit written in the Siddhaṃ script. Kūkai found the translated portion of the sutra was very cryptic. Because Kūkai could find no one who could elucidate the text for him, he resolved to go to China to study the text there. Ryuichi Abe suggests that the Mahavairocana Tantra bridged the gap between his interest in the practice of religious exercises and the doctrinal knowledge acquired through his studies.
Travel and study in China In 804, Kūkai took part in a government-sponsored expedition to China, led by Fujiwara no Kadanomaro, in order to learn more about the Mahavairocana Tantra. Scholars are unsure why Kūkai was selected to take part in an official mission to China, given his background as a private monk who was not sponsored by the state. Theories include family connections within the Saeki-Ōtomo clan, or connections through fellow clergy or a member of the Fujiwara clan.
The expedition included four ships, with Kūkai on the first ship, while another famous monk, Saichō was on the second ship. During a storm, the third ship turned back, while the fourth ship was lost at sea. Kūkai's ship arrived weeks later in the province of Fujian and its passengers were initially denied entry to the port while the ship was impounded. Kūkai, being literate in Chinese, wrote a letter to the governor of the province explaining their situation.Matsuda, William, J. (2003). The Founder Reinterpreted: Kukai and Vraisemblant Narrative, Thesis, University of Hawai´i, pp. 39-40. Internet Archive The governor allowed the ship to dock, and the party was asked to proceed to the capital of Chang'an (present day Xi'an), the capital of the Tang dynasty.
After further delays, the Tang court granted Kūkai a place in Ximing Temple, where his study of Chinese Buddhism began in earnest. He also studied Sanskrit with the Gandharan pandit Prajñā (734–810?), who had been educated at the Indian Buddhist university at Nalanda.
It was in 805 that Kūkai finally met the monk Huiguo (746–805) the man who would initiate him into Chinese Esoteric Buddhism (Tangmi) at Chang'an's Qinglong Monastery (). Huiguo came from an illustrious lineage of Buddhist masters, famed especially for translating Sanskrit texts into Chinese, including the Mahavairocana Tantra. Kūkai describes their first meeting:
Huiguo immediately bestowed upon Kūkai the first level abhisheka (esoteric initiation). Whereas Kūkai had expected to spend 20 years studying in China, in a few short months he was to receive the final initiation, and become a master of the esoteric lineage. Huiguo was said to have described teaching Kūkai as like "pouring water from one vase into another". Huiguo died shortly afterwards, but not before instructing Kūkai to return to Japan and spread the esoteric teachings there, assuring him that other disciples would carry on his work in China.
Kūkai arrived back in Japan in 806 as the eighth Patriarch of Esoteric Buddhism, having learnt Sanskrit and its Siddhaṃ script, studied Indian Buddhism, as well as having studied the arts of Chinese calligraphy and poetry, all with recognized masters. He also arrived with a large number of texts, many of which were new to Japan and were esoteric in character, paintings of his predecessors, as well as several texts on the Sanskrit language and the Siddhaṃ script.
However, in Kūkai's absence Emperor Kanmu had died and was replaced by Emperor Heizei who exhibited no great enthusiasm for Buddhism. Kūkai's return from China was eclipsed by Saichō, the founder of the Tendai school, who found favor with the court during this time. Saichō had already had esoteric rites officially recognised by the court as an integral part of Tendai, and had already performed the abhisheka, or initiatory ritual, for the court by the time Kūkai returned to Japan. Later, with Emperor Kanmu's death, Saichō's fortunes began to wane.
Saichō requested, in 812, that Kūkai give him the introductory initiation, which Kūkai agreed to do. He also granted a second-level initiation upon Saichō, but refused to bestow the final initiation (which would have qualified Saichō as a master of esoteric Buddhism) because Saichō had not completed the required studies, leading to a falling out between the two that was not resolved; this feud later extended to the Shingon and Tendai sects.
Little is known about Kūkai's movements until 809 when the court finally responded to Kūkai's report on his studies, which also contained an inventory of the texts and other objects he had brought with him, and a petition for state support to establish the new esoteric Buddhism in Japan. That document, the Catalogue of Imported Items, is the first attempt by Kūkai to distinguish the new form of Buddhism from that already practiced in Japan. The court's response was an order to reside in Takao-san temple (modern Jingo-ji) in the suburbs of Kyoto. This was to be Kūkai's headquarters for the next 14 years. The year 809 also saw the retirement of Emperor Heizei due to illness and the succession of the Emperor Saga, who supported Kūkai and exchanged poems and other gifts.
Emerging from obscurity
In 810, Kūkai emerged as a public figure when he was appointed administrative head of Tōdai-ji, the central temple in Nara, and head of the .
Emperor Saga became seriously ill shortly after his enthronement; while he was recovering, Emperor Heizei fomented a rebellion which had to be put down by force. Kūkai petitioned the Emperor to allow him to carry out certain esoteric rituals which were said to "enable a king to vanquish the seven calamities, to maintain the four seasons in harmony, to protect the nation and family, and to give comfort to himself and others". The petition was granted. Prior to this, the government relied on the monks from the traditional schools in Nara to perform rituals, such as chanting the Golden Light Sutra to bolster the government, but this event marked a new reliance on the esoteric tradition to fulfill this role.
With the public initiation ceremonies for Saichō and others at Takao-san temple in 812, Kūkai became the acknowledged master of esoteric Buddhism in Japan. He set about organizing his disciples into an order – making them responsible for administration, maintenance and construction at the temple, as well as for monastic discipline. In 813 Kūkai outlined his aims and practices in the document called The admonishments of Konin. It was also during this period at Takaosan that he completed many of the seminal works of the Shingon School:
Attaining Enlightenment in This Very Existence The Meaning of Sound, Word, Reality Meanings of the Word Hūm
All of these were written in 817. Records show that Kūkai was also busy writing poetry, conducting rituals, and writing epitaphs and memorials on request. His popularity at the court only increased, and spread.
Meanwhile, Kūkai's new esoteric teachings and literature drew scrutiny from a noted scholar-monk of the time named Tokuitsu, who traded letters back and forth in 815 asking for clarification. The dialogue between them proved constructive and helped to give Kūkai more credibility, while the Nara Schools took greater interest in esoteric practice.
Mount Kōya
In 816, Emperor Saga accepted Kūkai's request to establish a mountain retreat at Mount Kōya as a retreat from worldly affairs. The ground was officially consecrated in the middle of 819 with rituals lasting seven days. Kūkai could not stay there, however, as he had received an imperial order to act as advisor to the secretary of state. He therefore entrusted the project to a senior disciple. As many surviving letters to patrons attest, fund-raising for the project now began to take up much of Kūkai's time, and financial difficulties were a persistent concern; indeed, the project was not fully realised until after Kūkai's death in 835.
Kūkai's vision was that Mt. Kōya was to become a representation of the Mandala of the Two Realms that form the basis of Shingon Buddhism: the central plateau as the Womb Realm mandala, with the peaks surrounding the area as petals of a lotus; and located in the centre of this would be the Diamond Realm mandala in the form of a temple which he named . At the center of the temple complex sits an enormous statue of Vairocana, who is the personification of Ultimate Reality.