Wilber’s Integral Theory

Charismatic, iconoclastic philosopher Ken Wilber puts forth “Integral Theory” as an overarching metatheory that seeks to harmonize numerous (100+), diverse philosophical and spiritual theories—including consciousness studies, meditative traditions, religious traditions, psychology, transpersonal psychology, parapsychology, and sociology—into a single, coherent framework that accounts for the human condition, broadly conceived.

Integral Theory is founded on a developmental “spectrum of consciousness,” an evolutionary account from ancient non-life-to-life proto-consciousness to ultimate spirit/spiritual attainment or enlightenment. In New Age intellectual circles, Integral Theory is lauded as a pioneering, path-setting model for novel explorations of consciousness and human futures (“Integral theory,” 2024).

Integral Framework and Vision

Wilber's core framework is a four-quadrant model—the AQAL (All Quadrants All Levels) model—the simple-sounding 2×2 grid arraying interior-exterior with individual-collective. The ambitious claim is that all essential theories, models, and levels of individual psychology and spiritual development, and of collective expressions of social organization, can be subsumed and discerned within Wilber's AQAL system. Moreover, according to its proponents, all forms of knowledge and experience can be conceptualized as fitting and flowing together within the model.

In his 1995 classic, Sex, Ecology, Spirituality: The Spirit of Evolution, Wilber combines sex and gender issues, ecological wisdom, and non-sectarian spirituality into what adherents see as a prescient, coherent vision for contemporary times. Founded on the emergence of mind and the evolution of human consciousness, and on combatting philosophical naturalism (which he considers as a source of the world's ills), Wilber asks a critical question: Can spiritual concerns be integrated with the modern world? Wilber conceives of the “Kosmos” (not “cosmos,” which is too physicalist for him) as consisting of several concentric spheres: matter (the physical universe); then life (the vital realm); then mind (the mental realm); then soul (the psychic realm); and then finally Spirit (the spiritual realm) (Wilber, 1995).

In his 1999 book, Integral Psychology: Consciousness, Spirit, Psychology, Therapy, Wilber seeks to reestablish spiritual consciousness in contemporary developmental psychology by embracing “every legitimate aspect of human consciousness [Eastern and Western, ancient and modern] under one roof.” Wilber's project is to legitimize, within the framework of modern science, the spiritual quest (Wilber, 1999).

Relation to Consciousness Theories

What's the relationship between Wilber's project and this Landscape of theories of (phenomenal) consciousness? It is direct in that if Wilber succeeds, Materialism Theories of consciousness are obviously undermined and likely defeated. Although Wilber does not get much into the consciousness-categories game, his core developmental process begins with a separation of individual consciousness from a transcendental reality, and then his grand course of human development moves toward restoring the primordial unity of human and transcendental consciousness (“Integral theory,” 2024).