Tiantai
In the 6th century, a Chinese monk named Zhiyi stood on Tiantai Mountain in Zhejiang province and began to weave together centuries of Indian Buddhist thought into a new system. Before him, the Indian philosopher Nāgārjuna had established Madhyamaka philosophy, which emphasized emptiness and the middle way. Later monks like Huiwen and Nanyue Huisi studied these texts and claimed to awaken to their profound meaning during meditation. Huisi reportedly realized the Lotus Samādhi, an enlightenment state linked to the Lotus Sutra, before passing his teachings to Zhiyi. This lineage was later constructed by Buddhists to show continuity, but it did not reflect the actual popularity of these monks at the time. Zhiyi became the fourth patriarch and the principal founder of what would become known as the Tiantai school. He spent much of his life on Tiantai Mountain, which eventually became the major center for the tradition. His work drew from earlier Mahayana sources such as Madhyamaka, founded by Nāgārjuna, who is traditionally regarded as the first patriarch of the school. Brook Ziporyn, professor of ancient and medieval Chinese religion and philosophy, states that Tiantai Buddhism is "the earliest attempt at a thoroughgoing Sinitic reworking of the Indian Buddhist tradition." According to Paul Swanson, scholar of Buddhist studies, Tiantai Buddhism grew to become "one of the most influential Buddhist traditions in China and Japan." The school received imperial support during the Sui dynasty (581, 618), making it one of the leading schools of Chinese Buddhism with numerous large temples supported by emperors and wealthy patrons.
Zhiyi developed a complex philosophical system centered on the Threefold Truth, which comprises emptiness, provisional existence, and the middle truth. All phenomena are empty of any independent self-nature or essence, corresponding to the ultimate truth. Phenomena exist in a provisional manner through causes and conditions, known as conventional truth. The middle truth holds that phenomena are both empty and exist provisionally simultaneously. This view transcends all dualities and avoids extremes like existence and non-existence. Zhanran expanded this framework further by arguing that even insentient objects like mountains, sounds, and smells possess Buddha-nature. His work The Adamantine Scalpel became the key source for the doctrine of the Buddha-nature of Insentient Beings. He grounded this view in the Tiantai doctrine of universal inclusion, teaching that all things, sentient or insentient, are interconnected and interpenetrating. Another unique hallmark of Tiantai thought is Inherent Evil, the idea that our inherent nature includes good and evil. While Buddha-nature is often understood as wholly pure, Tiantai proclaims that ultimate reality contains not only the good but also the bad. Zhiyi argued that "without evil there is no good" and that turning evil over fulfills good. Later figures like Siming Zhili and Youxi Chuandeng further articulated and defended this doctrine. They taught that since all realms interpenetrate within any one thought, the buddha-nature cannot be separate from evil. This theory serves as the foundation for the idea that Buddha-nature includes good and evil through mutual inclusion.
Central to Tiantai practice is the system of zhiguan, the union of calming or cessation and contemplation or insight. Zhiyi developed a comprehensive meditation curriculum organized into four key frameworks: the twenty-five skillful means, the four samadhis, the ten objects of contemplation, and the ten modes of contemplation. The four samadhis describe different meditative approaches such as constant sitting, constant walking, alternating sitting and walking, and mindfulness during all activities. Constant Sitting Samādhi involves 90 days of uninterrupted seated meditation, fostering deep concentration and inner calm. Constant Walking Samādhi is practiced for 90 days and involves mindful walking around a Buddha statue. Half-Walking, Half-Sitting Samādhi combines seated and walking meditation in alternating periods. Neither Walking nor Sitting Samādhi transcends fixed postures, encouraging meditative awareness in daily activities. Since the time of Zhiyi (538-597), the tradition also developed sophisticated repentance rituals connected to the Lotus Sutra. These practices include acts of repentance, prayer, sympathetic joy, merit transference, and bodhisattva vows. Prominent figures like Zunshi expanded upon Zhiyi's work by systematizing ceremonies such as the Lotus Repentance and the Golden Light Repentance. Pure Land Buddhist practices, especially nianfo, the recitation of Amitabha's name, have always been a major part of Tiantai Buddhism. Many Taitai figures were key in spreading Pure Land practice in China during the Tang and Song dynasties.
After the generations of Zhiyi and his disciple Guanding, Tiantai was eclipsed for a time by newer schools until the sixth patriarch Jingxi Zhanran revived it. During the Tang Dynasty (618-907), Zhanran wrote three important commentaries on Zhiyi's works and defended the tradition against rival factions. The school suffered another setback during the Yuan dynasty, which supported Tibetan Buddhism while Chan grew in popularity. The defeat of the Song dynasty was a serious blow to Tiantai, which suffered from neglect and destruction. However, the Ming Dynasty (1368, 1644) saw further religious revivals among major Chinese Buddhist schools including Tiantai under the reign of the Buddhist friendly Wanli Emperor. Key figures like Baisong Zhenjue and Youxi Chuandeng converted from Chan to Tiantai and attempted to revive the tradition. They wrote new works, lectured widely, and published gazetteers. They also commented on the Lotus Sutra from a Tiantai perspective and revived ancestral monasteries such as Gaoming and Ayuwang. During the Qing Dynasty, Tianxi Shoudeng became one of the most influential teachers and exegetes of Tiantai. The ancient Guoqing Temple at Mount Tiantai had suffered from neglect but was renovated at the behest of Zhou Enlai in 1973.
The Japanese Tendai school branched off from Tiantai during the 9th century and played a major role in the development of Japanese Buddhism. Daosui, Zhanran's disciple and seventh patriarch, was the primary teacher of Saichō, the founder of the Japanese Tiantai tradition. A Korean offshoot, the Cheontae school, was established during the 12th century. These branches demonstrate how Tiantai influenced other forms of East Asian Buddhism including Chan and Pure Land. The Song dynasty revival began in Zhejiang province thanks to the Korean monk Yitong who took up residence in Ningbo after studying with master Xiji at Mt. Tiantai. His two main disciples, Zhili and Zunshi, were responsible for reviving the school there. The increasing tensions within the Tiantai tradition culminated in a famous debate known as the "home mountain" vs. "off mountain" debate. Off mountain supporters supported importing Huayan-Chan doctrines into Tiantai while home mountain supporters saw the original view as superior. Over time, Zhili's home mountain view turned out to be the most influential and his works became part of the orthodox Tiantai canon during the Song dynasty.
Dixian was the most influential figure in modern Tiantai who carried the lineage from the late Qing into the 20th century. He founded institutions like the Contemplation Institute and played a significant role in establishing modern Chinese Buddhist education. Dixian's student Tanxu rebuilt various Taitai temples during the Republican era such as Zhanshan temple in Qingdao and preserved the lineage into the PRC era. During the Chinese Civil War, various dharma heirs moved to Hong Kong including Tanxu and Baojing. They helped establish the Tiantai tradition in Hong Kong where it remains a strong living tradition today. Baojing's dharma heir Jueguang established Guanzong Temple in Hong Kong and transmitted the lineage to numerous monks from Korea, Indonesia, Singapore, Taiwan and mainland China. Other monks have helped reintroduce the Tiantai tradition from Hong Kong back to mainland China aiding reconstruction after the reform and opening up period. The ancient Guoqing Temple on Mount Tiantai is now a major center of Chinese Tiantai Buddhism and remains a place of pilgrimage for Japanese Tendai Buddhists. Modern thinkers like Mou Zongsan were also influenced by Tiantai thought.
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Common questions
Who founded the Tiantai school of Buddhism in China?
Zhiyi became the fourth patriarch and principal founder of the Tiantai school. He established the tradition on Tiantai Mountain in Zhejiang province during the 6th century.
What are the core philosophical doctrines taught by Zhiyi in the Tiantai system?
Zhiyi developed a complex philosophical system centered on the Threefold Truth which comprises emptiness, provisional existence, and middle truth. The doctrine also includes Inherent Evil to show that ultimate reality contains both good and evil through mutual inclusion.
When did the Sui dynasty provide imperial support for the Tiantai school?
The school received imperial support during the Sui dynasty between the years 581 and 618. This period made it one of the leading schools of Chinese Buddhism with numerous large temples supported by emperors and wealthy patrons.
How did the Japanese Tendai school originate from the Chinese Tiantai tradition?
The Japanese Tendai school branched off from Tiantai during the 9th century under the guidance of Saichō. Daosui served as the primary teacher of Saichō and transmitted the lineage from the seventh patriarch Zhanran.
Which modern figures revived the Tiantai tradition after the Qing Dynasty collapse?
Dixian was the most influential figure who carried the lineage from the late Qing into the 20th century. His student Tanxu rebuilt various Taitai temples during the Republican era such as Zhanshan temple in Qingdao and preserved the lineage into the PRC era.