Synopsis In academic circles Mahadevan and Advaita are synonyms. A practical Advaitin by training and temperament, T.M.P. Mahadevan enriched the Vedic tradition through analysis, explanation, and interpretation of Advaita in all his writings and lectures. The Advaitin who attracted his attention from the beginning was Sankara. It is through Sankara that he surveyed pre-Sankara, post-Sankara and contemporary Advaita. To him, Advaita was not only the summum bonum, but also to academics and non-academics outside India. His numerous writings noted for their depth and range help us to understand the theory and practice of Advaita. This monograph is a comprehensive study and interpretation of the writings of Mahadevan who was both an academic and a spiritual man. Among the builders of Indian philosophy, he was certainly one.