The ninth chapter of the Way of the Bodhisattva is philosophically very rich but forbiddingly technical, and can only be read well with a good commentary. Künzang Sönam's commentary offers a unique and complete introduction to the view of Prāsaṅgika-Madhyamaka, the summit of Buddhist philosophy in Tibet, as articulated by Tsongkhapa. It brings Śāntideva's text, and Tsongkhapa's interpretation of Prāsaṅgika-Madhyamaka, into conversation with a vast Buddhist literature from India and Tibet. By articulating the integral relationship between emptiness and interdependence, this text formulates a sustained and powerful argument for emptiness as a metaphysical basis of bodhisattva ethics. This volume makes the ninth chapter accessible to English-speaking teachers and students of the Way of the Bodhisattva.