Book excerpt: Swami Vivekananda was one of the great religious minds of the 19th century. His appearance in the Congress of World Religion in America was a momentous event in the history of religion, where he changed the western view of Vedanta Hindu philosophy. What is the substance of Vivekananda s interpretation of Vedanta? And how relevant is it to 20th century man? In this revised volume, Gautam Sen pieces together the representative portions of the Swami s philosophy and ties them up with a running commentary of his own.