A bull is a favorite Zen animal—when it sits it really sits, and when it moves it really moves.
Seki Bokuo was born in Gunma prefecture. He was Dharma-Heir of Seki Seisetsu and spent many years as Zen master and abbot of Tenryu-ji, a major Rinzai temple in Kyoto. Bokuo wrote numerous books on different aspects of Zen training, and he was a prolific, and talented, Zen artist.