That all opposites—such as mass and energy, subject and object, life and death—are so much each other that they are perfectly inseparable, still strikes most of us as hard to believe. But this is only because we accept as real the boundary line between the opposites. It is, recall, the boundaries themselves which create the seeming existence of separate opposites. To put it plainly, to say that "ultimate reality is a unity of opposites" is actually to say that in ultimate reality there are no boundaries. Anywhere.

Throughout 1997 he had kept journals of his personal experiences which were publiKen Wilberd in 1999 as One Taste a term for unitary consciousness. Quadrants
As an inevitable corollary of their nature as a simultaneous part and whole each holon inherently has an interior and an exterior perspective (the perception or equivalent of the holon and the perspective of other separate entities) and also may be considered in the sense of an individual or as a plurality or collective. " Wilber's response is that the world religious traditions do not attest to the importance that Grof assigns to the perinatal.

In 1998 he founded the Integral Institute. His work formulates what he calls Integral Theory.