Ryokan (1758-1831) is, along with Dogen and Hakuin, one of the three giants of Zen in Japan. But unlike his two renowned colleagues, Ryokan was a societal dropout, living mostly as a hermit and a beggar. He is now regarded as one of the greatest poets of the Edo Period, along with Basho, Buson, and Issa. He was also a master artist-calligrapher with a very distinctive style, due mostly to his unique and irrepressible spirit. Kazuaki Tanahashi, a Japanese-trained calligrapher, is the pioneer of the genre of "one stroke painting" as well as the creator of multicolor enso (Zen circles). His brushwork has been shown in solo exhibitions in galleries, museums, and universities all over the world. Tanahashi has edited several books of Dogen's writings and is also the author of Brush Mind.