This ebook is the best-known work of Thomas Aquinas (c.1225–1274). Although unfinished, the Summa is «one of the classics of the history of philosophy and one of the most influential works of Western literature.» It is intended as an instructional guide for moderate theologians, and a compendium of all of the main theological teachings of the Catholic Church. It presents the reasoning for almost all points of Christian theology in the West. The Summa Theologica is divided into three parts, and...