Advaita Vedanta, meaning “non-dualism,” is a spiritual philosophy rooted in the Upanishads, teaching that the ultimate reality, Brahman, is the only truth. It asserts that the individual self (Atman) is not separate from this infinite consciousness, and the perception of duality is an illusion (maya). Through self-inquiry, meditation, and scriptural study, seekers can realize this unity, achieving liberation (moksha) from the cycle of birth and suffering.