Sokushin zebutsu (Japanese: 即心是佛), rendered in English as Mind is Itself Buddha, is a book of the Shōbōgenzō by the 13th century Sōtō Zen monk Eihei Dōgen. It was written in the spring of 1239 at Dōgen's monastery Kōshōhōrin-ji in Kyoto. The book appears as the fifth book in both the 75 and 60 fascicle versions of the Shōbōgenzō, and it is ordered sixth in the later chronological 95 fascicle Honzan editions. The title Sokushin zebutsu is an utterance attributed to the 8th century Song Dynasty Zen monk Mazu Daoyi in a well known kōan that appears most notably as Case 30 in The Gateless Barrier, although Dōgen would have known it from the earlier Transmission of the Lamp. In addition to this book of the Shōbōgenzō, Dōgen also discusses the phrase Sokushin zebutsu in several of his formal Dha