The late Geshe Sopa was a refugee monk from Tibet sent to the United States by the Dalai Lama in 1963. He became a professor at the University of Wisconsin, training a generation of Western Buddhist scholars, and was a towering figure in the transmission of the Buddhism to the West. In this fifth and final volume of his commentary on Lama Tsongkhapa's masterwork on the graduated steps of the Buddhist path, Geshe Sopa explains the practice of superior insight, or wisdom, the pinnacle of the bodhisattva's perfections. All the Buddhist practices are for the purpose of developing wisdom, for it is wisdom that liberates from the cycle of suffering. All other positive actions, from morality to deep states of meditation, have no power to liberate unless they are accompanied by insight into the nature of reality. With unparalled precision, Geshe Sopa unpacks this central principle with scholarly virtuosity, guiding the reader through the progressive stages of realization.