This innovative volume demonstrates how and to what ends the writings of Xiong Shili, Ma Yifu, Tang Junyi and Mou Zongsan adopted and repurposed conceptual models derived from the Buddhist text Treatise on Awakening Mahāyāna Faith. It shows which of the philosophical positions defended by these New Confucian philosophers were developed and sustained through engagement with the critical challenges advanced by scholars who attacked the Treatise. It also examines the extent to which twentieth-century New Confucians were aware of their intellectual debt to the Treatise and explains how they reconciled this awareness with their Confucian identity.