Dhyāna in Buddhism "silent illumination." This became the source of some differences in practice between the Línjì and Cáodòng schools. A kōan, literally "public case", is a story or dialogue, describing an interaction between a Zen master and a student. These anecdotes give a demonstration of the master's insight. Koans emphasize the non-conceptional insight that the Buddhist teachings are pointing to. Koans can be used to provoke the "great doubt", and test a student's progress in Zen practice. Kōan-inquiry may be practiced during zazen (sitting meditation), kinhin (walking meditation), and throughout all the activities of daily life. Kōan practice is particularly emphasized by
An Introduction to Zen Buddhism after the 1927 publication of his book "Zen Essays", which he decided would be "too heavy" as an introduction to Zen for beginners. Suzuki intended the resultant volume, 1934's "An Introduction to Zen Buddhism", to be used as a companion with the contemporaneously published "Manual of Zen Buddhism". "An Introduction to Zen Buddhism" was published in 1934 in Kyoto by the Eastern Buddhist Society. The Marshall Jones Company of Boston oversaw first publication in the United States. The 1939 German language edition was published with a preface by Carl Jung. In 1949, the book was reprinted in London and New