Kūkai

Kūkai (空海; Japanese pronunciation: [kɯꜜː.kai], 27 July 774 – 22 April 835), born Saeki no Mao (佐伯 眞魚) posthumously called Kōbō Daishi (弘法 大師; [koː.boː daꜜi.ɕi], lit. 'the Grand Master Who Propagated the Dharma'), 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 Odaishi-sama (お大師様; "The Grand Master"), and the religious name of Henjō Kongō (遍照金剛; "Vajra Shining in All Directions").

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 Daigakuryō (大学寮). 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 Sōgō (僧綱, 'Office of Priestly Affairs') 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.