The book "The Evolution of the Idea of God: A Study of the Origins of Religions" by Grant Allen is a study of the development of the concept of God in the history of religious ideas. The author explores the origins, stages and changes in the religious world, showing how the idea of a higher power and the experience of the sacred changed over time. The book provokes the reader to think about how the evolution of the idea of God affects culture, society and individuals, and how this process affects the formation of our values and views. With insightful analysis and insightful narrative, Grant Allen's book is a fascinating source of knowledge for anyone interested in religion, philosophy, and cultural studies.