The Double Quest: A Study of Repentance and Prayer by Rufus M. Jones is a seminal work on spirituality and transcendence. The author analyzes the concepts of repentance and prayer from the standpoint of religious philosophy, paying attention to their importance for spiritual growth and strengthening of faith. In his book, Jones explores these topics in detail, offering the reader a deep reflection on the nature of repentance and prayer, their relationship to the human and the Divine, as well as ways to embody them in everyday life. This book will be a valuable resource for those interested in spirituality, religion, and philosophy.