HAKUUN YASUTANI
Flowers Fall - A Commentary on Zen Master Dōgen’s Genjōkōan

Enlightenment means waking up to the world of oneness. Unenlightened people look at everything dualistically: self and other, subject and object, delusions and enlightenment, this world and the Pure Land, unenlightened persons and buddhas, form and emptiness. Even if one tries to get rid of that duality by mouthing the theory that “form is emptiness,” the seam of “is” remains. It’s not the seamless stupa.

The actual experience of enlightenment comes springing forth in the realm of true oneness. And with that, one sometimes cries out in astonishment. One becomes aware that the whole universe is just the single seamless stupa. It’s not some simplistic kind of thing like a reflection in a mirror.