This volume of essays contributes to our understanding of the ways in which the Jesuits employed emotions to change hearts -that is, convert or reform-both in Europe and in the overseas missions. The early modern Society of Jesus excited and channeled emotion through sacred oratory, Latin poetry, plays, operas, art, and architecture; it inflamed young men with holy desire to die for their faith in foreign lands; its missionaries initiated dialogue with and ‘accommodated’ to non-European cultural and emotional regimes. The early modern Jesuits conducted, in all senses of the word, much of the emotional energy of their times. As such, they provide a compelling focus for research into the links between rhetoric and emotion, performance and devotion, from the sixteenth through eighteenth centuries.