Advait Vedant is a school of Hindu philosophy that teaches nonduality or the absence of a separation between the subject and object. This philosophy is based on the Upanishads and commentaries by eminent scholars like Gaudapada and Sri Adi Shankaracharya. Dvaita means duality, while Advait means nonduality. In simpler terms, Advait means the absence of separation between the subject and object. We experience duality in our everyday lives but in deep sleep only nonduality.