Constantly realize the self

"There is no dogmatic Zen, no Zen theory and no Zen philosophy. There is only the constant realization of Self. Keeping our feet on the ground, there is only constant revelation of THIS-as it is, at each moment. THIS is reality; THIS is no other than the manifestation, the cause of Mu. So we say:

Buddha nature pervades he whole universe
Revealing right here now....

Right here now, it is revealed as coughing, as a human being, as a drowsy state of mind. Right here now! There is nothing in this world which is not the Buddha."

Eido Shimano, Roshi
Excerpt | Golden Wind - Zen Talks