advaita

Advaita Vedanta (IAST ; Sanskrit ; IPA ) is a sub-school of the Vedānta (literally, end or the goal of the Vedas, Sanskrit) school of Hindu philosophy. Other major sub-schools of Vedānta are Dvaita and . Advaita (literally, non-duality) is often called a monistic system of thought. The word "Advaita" essentially refers to the identity of the Self (Atman) and the Whole (Brahman). The key source texts for all schools of are the Prasthanatrayi – the canonical texts consisting of the  Upanishads, the Bhagavad Gita and the Brahma Sutras. The first person to explicitly consolidate the principles of Advaita Vedanta was Adi Shankara.
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Advaita (Sanskrit) [from a not + dvaita dual from dvi two] Nondual; the Advaita or nondualistic form of Vedanta [from veda knowledge + anta end] expounded by Sankaracharya teaches the oneness of Brahman or the paramatman of the universe with the human spirit-soul or jivatman, and the identity of spirit and matter; also that the divine spirit of the universe is the all-efficient, all-productive cause of the periodic coming into being, continuance, and dissolutions of the universe; and that this divine cosmic spirit is the ultimate truth and sole reality -- hence the term advaita (without a second). All else is maya, in proportion to its distance from the divine source.
The greatest initiates and yogis since Sankaracharya's time are reputed to have come from the ranks of the Advaita-Vedantists. "Yet the root philosophy of both Adwaita and Buddhist scholars is identical, and both have the same respect for animal life, for both believe that every creature on earth, however small and humble, 'is an immortal portion of the immortal matter' -- for matter with them has quite another significance than it has with either Christian or materialist -- and that every creature is subject to Karma" (SD 1:636; cf 2:637).