About Bassui Tokushō

Bassui Tokushō was a Rinzai Zen Master born in modern-day Kanagawa Prefecture who had trained with Sōtō, Rinzai and Ch'an masters of his time. Bassui was unhappy with the state of Zen practice in Japan during his time, so he set out in life with the mission of revitalizing it. The problems he saw were really two sides of the same coin. That is, he saw both too much attachment by some monks and masters to ritual and dogma as well as too much attachment by some monks and masters to freedom and informality.
Buddhism Now - Online Magazine
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 .