Since it is the practice of enlightenment, that practice has no beginning and since it is enlightenment within the practice, that realization has no end.
DogenZazen is an activity that is an extension of the universe. Zazen is not the life of an individual, it's the universe that's breathing.
DogenLife and death are nothing but the mind. Years, months, days, and hours are nothing but the mind. Dreams, illusions, and mirages are nothing but the mind. The bubbles of water and the flames of fire are nothing but the mind. The flowers of the spring and the moon of the autumn are nothing but the mind. Confusions and dangers are nothing but the mind.
Dogen