This book unveils the vision of Advaita Vedanta in Taittiriya Upanishad with special reference to Shankarabhashya in a unique style, detailing the importance of shabda-pramana, along with the free translations of three vallis of the Upanishad. It presents the oneness of triangular phenomenon called jiva, jagat and Ishvara from the Advaita Vedanta perspective.