This volume deals with the transformative force of Observant reforms during the long fifteenth century, and with the massive literary output by Observant religious, a token of a profound pastoral professionalization that provided religious and lay people alike with encompassing models of religious perfection, as well as with new tools to shape their religious identity. The essays in this work contend that these models and tools had an ongoing effect far into the sixteenth century (on all sides of the emerging confessional divide). At the same time, the controversies surrounding Observant reforms resulted in new sensibilities with regard to religious practices and religious nomenclature, which would fuel many of the early sixteenth-century controversies. Contributors are Michele Camaioni, Anna Campbell, Fabrizio Conti, Anna Dlabačová, Sylvie Duval, Koen Goudriaan, Emily Michelson, Alison More, Bert Roest, Anne Thayer, Johanneke Uphoff, Alessandro Vanoli, Ludovic Viallet, and Martina Wehrli-Johns.