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The Advaita Vedanta interpretation of the Vedas espouses that Brahman, a pervasive, genderless, infinite, eternal essence, alone is real and that there is no difference between the "self" and this essence. The principal, though not the first, exponent of the Advaita Vedanta-interpretation was this philosopher in the 8th century, who systematised the works of preceding philosophers.
Who is Adi Shankara