It seems to me that to sit with open senses in a moment of felt presence is to know these patterns of motion, the holistic system of the world we inhabit, as the Dharma teaching of the world of inanimate phenomena. It is to know thusness of its Buddha nature and to understand Tozan’s awakening. In this Sansui-kyo (Mountains and Waters Sutra) fascicle of Shobogenzo, Dogen supplies a capping phrase for Tozan’s awakening: