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.
DogenDo no harmful actions, do not become attached to the cycle of death and rebirth, show kindness, respect the old and have compassion for the young, do not have a heart that rejects or a heart that covets and have no worry or sadness in your heart. This is what is called enlightenment. Do not seek it elsewhere.
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
Dogen