The one and only thing required is to free oneself from the bondage of mind and body alike, putting the Buddha's own seal upon yourself. If you do this as you sit in ecstatic meditation, the whole universe itself scattered through the infinity of space turns into enlightenment. This is what I mean by the Buddha's seal.
DogenWhat is the way of the Buddha? It is to study the self. What is the study of the self? It is to forget oneself. To forget oneself is to enlightened by everything in the world.
DogenIf we look at the world with a deluded body and mind, we will think that our self is permanent. But if we practice correctly and return to our true self, we will realize that nothing is permanent
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