Won-hyo (617 - 686) was one of the leading thinkers, writers and commentators of the Korean Buddhist tradition. With his life spanning the end of the Three Kingdoms period and the beginning of the Unified Silla, Wonhyo played a vital role in the reception and assimilation of the broad range of doctrinal Buddhist streams that flowed into the Korean peninsula at the time. Wonhyo was most interested in, and affected by Tathāgatagarbha , Yogācāra and Hwaom thought. However, in his extensive scholarly works, composed as commentaries and essays, he embraced the whole spectrum of the Buddhist teachings.