The book "The Fate of the Soul: A Critical History of the Doctrine of a Future Life" by William Rounceville Alger is an in-depth study of the concepts of a future life and the belief in the infinity of the human soul. The author offers a critical review of various philosophical, religious and cultural approaches to this question through the ages, considering the influence of different teachings on the formation of modern ideas about the nature of the soul and its fate after death. The book opens the reader to deep philosophical reflections about what awaits our soul after death and how it affects our understanding of life and ethics.