Buddhism Zen Buddhism is divided into two main schools: Rinzai (臨済宗) and Sōtō (曹洞宗), the former greatly favouring the use in meditation on the koan (公案, a meditative riddle or puzzle) as a device for spiritual break-through, and the latter (while certainly employing koans) focusing more on "shikantaza" or "just sitting". Zen Buddhism is primarily found in Japan, with some presence in South Korea and Vietnam. The scholars of Japanese Soto Zen tradition in recent times have critiqued the mainstream Japanese Buddhism for "dhatu-vada", that is assuming things have substantiality, a view they assert to be non-Buddhist and "out of tune
Buddhism in the United States (1927), he became a visible expositor of Zen Buddhism and its unofficial ambassador to Western readers. In 1951, Daisetz Teitaro Suzuki returned to the United States to take a visiting professorship at Columbia University, where his open lectures attracted many members of the literary, artistic, and cultural elite. In the mid-1950s, writers associated with the Beat Generation took a serious interest in Zen, including Gary Snyder, Jack Kerouac, Allen Ginsberg, and Kenneth Rexroth, which increased its visibility. Prior to that, Philip Whalen had interest as early as 1946, and D. T. Suzuki began lecturing on Buddhism at Columbia in 1950.