Book excerpt: Jesuit Foundations and Medici Power, 1532–1621 focuses on the cooperation between two new foundations, the last Medici state and the Society of Jesus, spanning nearly a century, concentrating on the Jesuit foundations in Florence, Siena, and Montepulciano. As the Medici built and centralized their power in the Grand Duchy of Tuscany, they sought to control both the civic and religious behavior of their citizens. They found partners in the Jesuits, whose educational program helped establish social order and maintain religious orthodoxy. Via a detailed investigation of both minor and major Italian Jesuit colleges, and of multiple Medici rulers, Kathleen M. Comerford provides insight into church/state cooperation in an age in which both institutions underwent significant changes.