Aah! If our old man Śākyamuni lit the Sŏn lamp in the mind of Mahākāśyapa and spilled the sea of doctrinal teachings into the mouth of Ānanda, then it is a certainty that Sŏn and the teachings were related by him on different days. But when those who are responsible for the doctrinal teachings hear talk of the [Sŏn] “special transmission outside the teachings,” their faces become flushed [with surprise and anger] and their eyes white, saying: “What kind of talk is this! Bah! This is where egotism gets you!” Therefore, disappointed, I tried to find the courage to use the calabash dipper to measure the sea, the hollow tube to steal a peek at the heavens. I will lay out the fundamentals via three gates. What are the three gates? What is brimming over with confusion is [the relationship between] Sŏn and the teachings. Therefore, the first fascicle of this book sets up “the gate of comparison between Sŏn and the teachings.” Those doing the slandering are lecturers on the teachings. Therefore, the middle fascicle sets up “the gate of the submission of textual lecturers [to Sŏn].” Those who spread [dharma] are the sovereign and his vassals. Therefore, the last fascicle sets up “the gate in which the sovereign and his vassals show esteem and confidence [in Sŏn].” The textual citations in these three gates are all the serious words of the ancients—not mere conjectures. Since they are not conjectural, it is natural that people will come to have confidence in this work. The name of this work is ...