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.
Ken WilberEach band or level, being a particular manifestation of the spectrum, is what it is only by virtue of the other bands. The color blue is no less beautiful because it exists along side the other colors of a rainbow, and "blueness" itself depends upon the existence of the other colors, for if there were no color but blue, we would never be able to see it.
Ken WilberWhat's my philosophy? In a word, integral. And what on earth-or in heaven-do I mean by "integral"? The dictionary meaning is fairly simple: "comprehensive, balanced, inclusive, essential for completeness." Short definition, tall order.
Ken WilberEarly morning, the orange sun is slowly rising, shining forth in empty luminous clarity. The mind and the sky are one, the sun is rising in the vast space of primordial awareness, and there is just this. Yasutani Roshi once said, speaking of satori, that it was the most precious realization in the world, because all the great philosophers had tried to understand ultimate reality but had failed to do so, yet with satori or awakening all of your deepest questions are finally answered: it's just this.
Ken Wilber