"The realm of yin and yang is the life where we oppose one thing against the other: good against bad, up against down, heaven against earth, this against that, self against other, form against emptiness, speech against silence. This is not a matter that exists in the realm of yin and yang points to the place where there’s a merging of opposites. In the Identity of Relative and Absolute we chant: 'Within light there is darkness but do not try to understand that darkness. Within darkness there is light, but do not look for that light.' Light and darkness are opposites, yet each one of them contains the other. They’re mutually arising and interdependent. There’s no separation between them. We tend to see them as separate, but they’re not... form is emptiness, emptiness is form, form is exactly emptiness, emptiness exactly form. Can it be any more specific and clear than that?"
- John Daido Loori (1931 - 2009)