Wilber's four quadrants come from two distinctions: interior and exterior, and individual and collective.
Wilber's example holon: "I have a thought; a thought occurs to me." Two distinctions, interior/exterior and individual/collective, give four windows onto it.It. From the outside, the thought is a change in brain physiology: norepinephrine, beta waves. True, important, and found by looking. The validity claim is truth.I. From the inside, the thought is a meaning, and knowing every atom of the brain will not give it to you unless the thinker tells you. The validity claim is truthfulness.We. The meaning only exists in a shared language and culture; without them the words are noise. The validity claim is justness, cultural fit.Its. Cultural meanings leave exterior correlates: records, buildings, technologies, institutions. The validity claim is functional fit.The settled frame: one holon with four inseparable aspects, each with its own validity claim, and Wilber's own sentences. This is the shareable image.
Wilber's four quadrants come from two distinctions: interior and exterior, and individual and collective. To show that they are four sides of one thing rather than four things, he takes a single thought round all four. From within, it is a meaning only I can tell you. From outside, it is a pattern of brain activity. Shared, it is a meaning that depends on a common language. Socially, it has correlates in institutions and structures. Each side is known in its own way and makes its own kind of validity claim:
"…my 'single' thought, the original holon, is not really a single thought as such, but rather a holon with four inseparable aspects (intentional, behavioral, cultural, and social), each with its own validity claims…"
Ken Wilber, Sex, Ecology, Spirituality (1995), ch. 4
The thought and every sentence in the windows are Wilber's. The "windows", the small drawings and the how-to-find-out lines are this wiki's. More: The Four Quadrants.