Nondualism, also called nonduality and sometimes monism, is a polyvalent term originating in Indian philosophy and religion, where it is used in various, related contemplative philosophies which aim to negate dualistic thinking or conceptual proliferation (prapanca) and thereby realize nondual awareness, 'that which is beyond discursive thinking', a state of consciousness described in contemplative traditions as a background field of unified, immutable awareness that exists prior to conceptual thought.
The English term "nonduality" is derived from the Sanskrit Hindu term "advaita" (अद्वैत), "not-two" or "one without a second," meaning that only Brahman, 'the one', is ultimately real while 'the world', or the multiplicity of thought-constructs, 'the second', is not fully real; and from the Buddhist term advaya, which is also literally translated as "not two" and has various applications, including the Madhyamaka negation of thinking in opposites such as ordinary, conventional truth versus ultimate truth, and in Yogachara the deconstruction of the "apprehension of sensory objects as separate from the perceiving consciousness."
