A Do is an art that allows us to understand the ultimate nature of the whole of life by closely examining ourselves through a singular activity of life: to arrive at the universal through studying the particular. . . . In Japanese calligraphy, teachers speak of a "unity of mind and brush" and declare that "if mind is correct, the brush is correct." . . . Mind and body coordination can be thought of as self-harmony.
— H. E. Davey, Living the Japanese Arts & Ways