Christians are supposed to love their neighbours, including their enemies. This is never easy. When feud and honour are common realities, it is even harder than usual. This book sketches the history of human (not political) peace-making in four countries of western Europe (Italy, France, Germany, and England) between the Reformation and the eighteenth century, and in their various religious institutions. It provides a unique account of the destiny of Christianity and the social and religious history of the West.