Heresy and Liminality in Shingon Buddhism: Deciphering a 15th Century Treatise on Right and Wrong

Abstract

Traditional historiography of Japanese Buddhism presents the Muromachi period as an era of triumph for Zen, and of decline for the previous near-hegemony of Esoteric Buddhism. However, for the Shingon school, the period from the late Middle Ages to early Edo period was rather a phase of expansion, especially in the more remote locales of Eastern Japan. Focusing on a text authored during the fifteenth century, this article will analyze how this idea of the outskirts or periphery was integrated with the process of creation of orthodoxy in local Shingon temples. In doing so, it will shed new light not only on the evolution, but also on the epistemological role of discourse relating to heresy, and on their role in the legitimation of monastic lineages.