Non-duality. Advaita literally means “not two,” and is a monistic or non-dualistic system that essentially refers to the unity of atman (the Self) and Brahman (the Supreme Absolute). This doctrine says that nothing exists apart from the Spirit and everything is a form assumed by the Spirit. In traditional advaita teachings, spiritual realization was sought not through yogic sadhana (practice) but via the discrimination of the Real, the Truth, the One, from the unreal, the illusory, “that which IT is not.” The one and only goal of the teachings of advaita is the pursuit of unity and singularity. See Advaita Vedanta.