Towards the end of his life St. Thomas Aquinas produced a brief, nontechnical work summarizing some of the main points of his massive Summa Theologiae. This 'compendium' was intended as an introductory handbook for students and scholars who might not have access to the larger work. It remains the best concise introduction to Aquinas's thought. Richard Regan is a highly respected Aquinas translator, who here relies on the definitive Leonine edition of the Latin text.His work will be received as the premier English version of this important text.