This book aims to give an exposition of basic tenets of Advaitism as propounded by Sankara in a succinct yet comprehensive manner. It is often claimed that Sankara looked upon the world as a Maya" or illusion and rejected karmayoga. It has been clearly brought out how these widespread beliefs are unfounded. Separate chapters have been dnoted to exposition of sankara's major works and his seminal commentarie on the Gita, the panisads and the Brahama Sutras.