by Ken Wilber (Author)
Wilber's groundbreaking synthesis of religion, philosophy, physics, and psychology started a revolution in transpersonal psychology. He was the first to suggest in a systematic way that the great psychological systems of the West could be integrated with the noble contemplative traditions of the East. Spectrum of Consciousness, first released by Quest in 1977, has been the prominent reference point for all subsequent attempts at integrating psychology and spirituality.
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Like radiation and light, consciousness, suggests Wilber, establishes a multiplicity of aspects as it 'steps down' into time and space. Thus, as a spectrum, it can be studied legitimately on one or more of its 'wavelengths.' Viewing consciousness in this way, we can see that seemingly disparate disciplines each speak to a different wavelength of awareness.