This volume in the Library of Christian Classics series offers selections from the Summa Theologica that best represent Thomas Aquinas' views on the moral and spiritual world in which we live. 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.