This book unveils the vision of Advaita Vedanta in Taittiriya Upanishad with special reference to Shankarabhashya in a unique style. Upanishads are shabda-pramana, and this work adequately details the six pramanas, which hold the key to understand the significance of shabda-pramana, along with the five shanti-mantras in Taittiriya Upanishad. As the crux, it analyses Shankara’s commentary – Taittiriya-Bhashyam – on Taittiriya Upanishad, enabling one to understand the deep layers of Advaita Vedanta in detail. The core theme “Vision of Advaita in Taittiriya Upanishad” discusses the oneness of the triangular phenomenon called jiva, jagat and Ishvara. It delves deep into the method of deciphering the mahavakyas as well. While following closely the source literature, this volume attempts to detail the nuances of Taittiriya-Bhashyam. The approach of navigating the reader to the principal theme of Advaita Vedanta is expected to give him/her a good background. In ensuring this the volume provides relevant citations and informative explanatory notes. More importantly, it across three vallis – Shikshavalli, Brahmanandavalli and Bhriguvalli – provides free translations of Taittiriya Upanishad. This elaborate and scholarly book is expected to add great value to students who wish to have a better understanding of the great Indian tradition called Advaita Vedanta.