I saw only the glory of green emeralds, and radiant buddhas walking everywhere, and there was no I to see any of this, but the emeralds were there ju… - Ken Wilber

If you are talking to me about your new car, you are the first person, I am the second person, and the car is the third person. These pronouns actually represent three perspectives that human beings can take when they talk about the world or attempt to know the world… The fascinating part is that these three perspectives might actually give rise to art, morals, and science. Or the Beautiful, the Good, and the True: the Beauty that is in the eye (or the "I") of the beholder; the Good or moral actions that can exist between you and me as a "we"; and the objective Truth about third-person objects (or "its") that you and I might discover: hence, art ("I"), morals ("we"), and science ("it").

An acknowledgment of the full spectrum of consciousness would profoundly alter the course of every one of the modern disciplines it touches—and that, of course, is an essential aspect of integral studies… A full-spectrum approach to human consciousness and behavior means that men and women have available to them a spectrum of knowing—a spectrum that includes, at the very least, the eye of flesh, the eye of mind, and the eye of spirit.

There are several different meanings of the words "religion" and "spirituality", all of which are important. The whole point about an integral or comprehensive approach is that it must find a way to believably include all of those important meanings in a coherent whole.