The book "What is Christian Science?" Mangasara M.M. is an important philosophical and religious study that examines the transition from traditional religious views to new concepts offered by Christian Science. The author relies on a critical analysis of biblical texts and his own intellectual approach to reveal the essence of this religious doctrine. The book offers the reader an open view of Christian Science and encourages a well-founded understanding of one's own religious beliefs. With an accessible style and insightful analysis, this book is an essential resource for anyone interested in the study of religious ideas and the philosophy of Christianity.