Fr. Roger Bacon: Opus Tertium, Opus Minus, Compendium Philosophiae (1859) is a book written by John Sherren Brewer that explores the works of the medieval philosopher and theologian, Roger Bacon. The book includes three of Bacon's most important works: Opus Tertium, Opus Minus, and Compendium Philosophiae. Opus Tertium is Bacon's most famous work, and it covers a wide range of topics, including mathematics, optics, alchemy, and theology. The book is divided into seven parts, each of which explores a different area of knowledge. Opus Minus is a shorter work that Bacon wrote as an introduction to his larger work, Opus Tertium. It provides an overview of Bacon's ideas and serves as a useful guide for readers who are new to his work. Compendium Philosophiae is a collection of Bacon's shorter writings, including his thoughts on the nature of the soul, the properties of light, and the principles of logic. The book also includes a biography of Bacon, written by Brewer, which provides valuable insights into his life and work. Overall, Fr. Rogeri Bacon: Opus Tertium, Opus Minus, Compendium Philosophiae (1859) is a comprehensive study of one of the most important thinkers of the medieval period. It offers readers a glimpse into Bacon's mind and provides a valuable resource for anyone interested in the history of philosophy, science, and theology.This scarce antiquarian book is a facsimile reprint of the old original and may contain some imperfections such as library marks and notations. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions, that are true to their original work.