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
Secular Buddhism promotes a strictly secular form of Buddhism. Batchelor was a Buddhist monk ordained in the more traditional forms of Buddhism. From his experience as a monk practicing Tibetan Buddhism and later Zen, he felt the need for a more secular and agnostic approach. In his books "Buddhism Without Beliefs" and "Confession of a Buddhist Atheist" he articulates his approach to the Buddha's teaching, describes Siddhattha Gautama as a historic person rather than an idealized religious icon, and scrutinizes typical Buddhist doctrines dealing with the concept of an afterlife. The Liberal Democrat peer Lord Avebury was a secular Buddhist and a