Zhiyi
Zhiyi (Chinese: 智顗; pinyin: Zhìyǐ; Wade–Giles: Chih-i; Japanese pronunciation: Chigi; Korean: 지의; 538–597 CE) also called Tiantai Dashi (天台大師) and Zhizhe (智者, "Wise One"), was a Chinese Buddhist monk, philosopher, meditation teacher, and exegete. He is considered to be the founder of the Tiantai Buddhist tradition, as well as its fourth patriarch.