Japanese Zen is derived from the Japanese pronunciation of the Middle Chinese word 禪 (Chan) which traces its roots to the Indian practice of dhyāna ("meditation"). Buddhism was introduced to China in the first century CE. According to tradition, Chan was introduced around 500 CE by Bodhidharma, an Indian monk teaching dhyāna. He was the 28th Indian patriarch of Zen and the first Chinese patriarch. Buddhism was introduced in Japan in the 8th century CE during the Nara period (710-794) and the Heian period (794–1185). Zen was not introduced as a separate school in Japan until the 12th century during the Kamakura
Japanese Zen Prince after the war. His greatest work is the 5-volume "Zen and Zen Classics", published in the 1960s. Here he discusses Zen themes from a philosophical standpoint, often in conjunction with Christian elements in a comparative spirit. His essays include "God, Buddha, and Buddhahood" and "Zen, Sin, and Death". The British philosopher Alan Watts took a close interest in Zen Buddhism and wrote and lectured extensively on it during the 1950s. He understood Zen as a vehicle for a mystical transformation of consciousness, and also as a historical example of a non-Western, non-Christian way of life that had fostered both