"Guerre et Religion d'humanité chez Alfred Loisy" is a scholarly book that delves into the profound themes of war and peace in the work of Alfred Loisy. Loisy, who experienced the horrors of several wars, reflects in his writing on the brutality of past eras and their contradiction to the principles of brotherhood as proclaimed in the Gospel. He examines historical wars, from the Assyrian conflicts to modern-day struggles, and discusses the necessity of just wars against aggressors. Despite his skepticism towards international peace efforts, such as the League of Nations, Loisy calls for the unity of humanity and encourages active engagement for peace. This book offers an in-depth analysis of Loisy's thoughts and their relevance to contemporary times.