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
Enlightenment in Buddhism "anicca", "dukkha" and "anatta". Insight leads to the four stages of enlightenment and Nirvana. In Mahayana Buddhism Prajna (Sanskrit) means "insight" or "wisdom", and entails insight into "sunyata". The attainment of this insight is often seen as the attainment of "enlightenment". "Kensho" and "Satori" are Japanese terms used in Zen traditions. "Kensho" means "seeing into one's true nature." "Ken" means "seeing", "sho" means "nature", "essence", c.q Buddha-nature. "Satori" (Japanese) is often used interchangeably with kensho, but refers to the "experience" of kensho. The Rinzai tradition sees "kensho" as essential to the attainment of Buddhahood, but considers further practice essential to