All five volumes of George Santayana's philosophical masterwork exploring the manifestations of reason in life are united in this superb edition. The Life of Reason begins boldly, with Santayana explaining his concept of reason in great detail. How a mind may embark and progress on applying rational thought to life is explained, and the practical value of such thinking methods are demonstrated. The second volume sees the author questioning whether men can be exhorted to virtuous behaviors without the concept of a creator, heaven, hell or other supernatural concepts. The third volume, Reason in Religion, is an emotional and at times autobiographical account of Santayana's own struggles with faith. Volumes four and five concern science and art, respectively. The basis of artistic expression and its grounding in reasoning is discussed, with chapters dedicated to the visual art of painting and also music.