Yuil （1720-1799）; Choson Son monk. He studied the histories and classics from a young age， entered the Buddhist order at the age of 18 to begin the practice of meditation. He subsequently spent time in concentrated study of the main Buddhist scriptures which had become customary for study in the Korean monks curriculum: The S/u^ram!gama-sutra 首楞严经， the Awakening of Faith 大乘起信论， the Diamond Sutra 金刚经 and the Sutra of Perfect Enlightenment 圆觉经. He wrote prolifically， and among some of his important works are commentaries to the above-mentioned four scriptures.