Adi Shankaracharya's commentaries (Bhasyas) on the principal Upanishads, the Brahma Sutras, and the Bhagavad Gita are the foundational texts of the Advaita Vedanta school. These works are not mere translations but are profound philosophical treatises that logically and systematically establish the non-dual nature of reality.
Through rigorous analysis and deep insight, Shankaracharya illuminates the core teachings of the Vedas, demonstrating that the individual self (Atman) is identical to the ultimate reality (Brahman). His Bhasyas are considered essential reading for any serious student of Vedanta.