The influence of Zen Master Ikkyū (1394-1481) permeates the full field of medieval Japanese aesthetics. Though best known as a poet, he was central to the shaping and reshaping of practices in calligraphy, Noh theater, tea ceremony, and rock gardening, all of which now define Japan’s sense of its cultural tradition. Ikkyū is unique in Zen for letting his love of all appearance occupy him until it destroys any possibility for safety or seclusion. In his poetry, he turns the eye of enlighten...