This compact collection of philosophical texts from the Summa Theologica -- on God, creation, the soul, human acts, moral good and evil, love, habits, virtue, and law -- is presented newly translated in abridged form and cast in a modified version of the medieval quaestio. Included are only the most important objections and Aquinas' replies; appeals to scriptural, theological, and philosophical authorities have been omitted. Unlike the ordering of the originals, questions and answers are here presented prior to objections and replies; the result is a sharp, rich, topically organised question-answer presentation of Aquinas' major philosophical arguments within a brief compass. A general Introduction, head notes, a glossary, an index, and a select bibliography offer expert guidance to the work of this major philosopher.