This volume includes readable translations of a number of important texts that speak to both concrete and practical issues of church life as well as questions of its very nature and constitution. Long recognized for the quality of its translations, introductions, explanatory notes, and indexes, the Library of Christian Classics provides scholars and students with modern English translations of some of the most significant Christian theological texts in history. Through these works--each written prior to the end of the sixteenth century--contemporary readers are able to engage the ideas that have shaped Christian theology and the church through the centuries.