Tiantai Buddhism emerged from an idiosyncratic and innovative interpretation of the Lotus Sutra to become one of the most complete, systematic, and influential schools of philosophical thought developed in East Asia. Brook A. Ziporyn puts Tiantai into dialogue with modern philosophical concerns to draw out its implications for ethics, epistemology, and metaphysics. Ziporyn explains Tiantai's unlikely roots, its positions of extreme affirmation and rejection, its religious skepticism and embrace of religious myth, and its view of human consciousness. Ziporyn reveals the profound insights of Tiantai Buddhism while stimulating philosophical reflection on its unexpected effects.