Seosan Hyujeong

Seosan Hyujeong (1520–1604) was the greatest Buddhist monk of the Joseon dynasty and a pivotal figure in Korean history. At a time when Buddhism had been driven to the margins of Korean society by centuries of Neo-Confucian state policy, Seosan preserved and revitalized the Seon tradition through his teaching, writing, and, most dramatically, his leadership of a monk army against the Japanese invasion of 1592. When Toyotomi Hideyoshi's forces overran the peninsula, the seventy-three-year-old Seosan rallied over five thousand monks into a guerrilla fighting force that played a significant role in the eventual Korean victory.

Seosan's intellectual legacy was equally formidable. His most important work, "Seonyo" (Mirror of Seon), became the standard textbook for Korean monastic education and remained so for centuries. In it, he articulated a comprehensive synthesis of Seon meditation, Pure Land recitation, and mantra practice, arguing that all three were valid gates to awakening suited to different temperaments and stages of development. This inclusive approach, which refused to rank one method above the others, became characteristic of mainstream Korean Buddhism. He also wrote extensively on the Avatamsaka Sutra and the Heart Sutra. Through his two principal disciples, Samyeongdang Yujeong and Pyeonyang Eongi, his lineage branched into the two main streams that would carry Korean Seon through the remaining centuries of the Joseon period.