About Ryoun Yamada

Ryoun Yamada, aka Yamada Ryoun or Yamada Masamichi, the son of the late Yamada Koun, is the current Zen master of San'un Zendo in Kamakura, Japan and the Abbot of the Sanbo Zen school of Zen Buddhism. Sanbo Zen is a lay organization of Zen, so Yamada also worked at Mitsubishi Bank and Mitsubishi Securities. Currently he heads the Itoki Corporation. As of the late 1990s, Yamada was returning to Japan only a few times each year.
An illustration of Hōnen preaching

Zen Buddhist monks – The unchanging essential nature

According to tradition, Chan was introduced around 500 CE by Bodhidharma, an Indian monk teaching dhyāna. is deeply rooted in the teachings and doctrines of Mahāyāna Buddhism. Mahayana Buddhism teaches śūnyatā, "emptiness", which is also emphasized by Zen. But another important doctrine is the buddha-nature, the idea that all human beings have the possibility to awaken. All living creatures are supposed to have the Buddha-nature, but don't realize this as long as they are not .