Upadesa Sara - the essence of all teaching - is one of the most popular Vendatic texts. It explains the paths of Action (Karma Yoga), Yoga (Astanga Yoga) and Knowledge (Jnana Yoga) and how they lead to the final goal of Self Knowledge. The great sage, Bhagvan Ramana Maharishi presents the subject in a simple and beautiful way. Swami Tejomayananda's commentary further simplifies the text and brings out its essence in an appealing way.