Summa Theologica, (Secunda Secundae) is a book by Thomas Aquinas, first published in 1271. This monumental section of Aquinas’s Summa Theologica examines the moral life in detail, focusing on the virtues and vices that define human conduct. In it, Aquinas explores the theological virtues of faith, hope, and charity, along with the cardinal virtues of prudence, justice, fortitude, and temperance. His work presents a comprehensive framework of Christian ethics, combining classical philosophy—particularly Aristotle’s moral thought — with Christian theology in a way that profoundly shaped medieval and later moral philosophy. Thomas Aquinas, one of the most influential thinkers of the Scholastic era, sought to harmonize reason and faith, offering a rational structure to Christian doctrine that continues to influence theology and philosophy today. Particularly valued for its depth and clarity in addressing real human struggles with virtue, vice, law, and conscience, and readable both as a historical theological text and as a study in the development of moral philosophy, Summa Theologica, (Secunda Secundae) remains essential for anyone seeking to understand the intellectual and spiritual roots of Western thought, Scholastic philosophy, and Christian ethics. This translation by Laurence Shapcote (the Fathers of the English Dominican Province), was first published in 1911.
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