The basic metaphysical issue that lies at the root of any system of philosophy [is] the primacy of existence or the primacy of consciousness.
The primacy of existence (of reality) is the axiom that existence exists, i.e., that the universe exists independent of consciousness (of any consciousness), that things are what they are, that they possess a specific nature, an identity. The epistemological corollary is the axiom that consciousness is the faculty of perceiving that which exists — and that man gains knowledge of reality by looking outward. The rejection of these axioms represents a reversal: the primacy of consciousness — the notion that the universe has no independent existence, that it is the product of a consciousness (either human or divine or both). The epistemological corollary is the notion that man gains knowledge of reality by looking inward (either at his own consciousness or at the revelations it receives from another, superior consciousness).
The source of this reversal is the inability or unwillingness fully to grasp the difference between one’s inner state and the outer world, i.e., between the perceiver and the perceived (thus blending consciousness and existence into one indeterminate package-deal). This crucial distinction is not given to man automatically; it has to be learned. It is implicit in any awareness, but it has to be grasped conceptually and held as an absolute.