This is a comparative study of the interaction between monasticism and society in Theravada Buddhism and medieval Catholicism. Building on Weber's classical analysis of religious virtuosity on one hand, and opposing recent comparative historical sociology's neglect of structures of meaning on the other, the author demonstrates the combined impact of religious orientations, macrosocietal structures, and virtuoso radicalism in shaping the ideological power of religious elites in the historical framework of the Great Traditions.