The Sacred Heart of Jesus has become such an integral part of Roman Catholic faith and appears so often and so prominently in Catholic pictures, and in the names of Catholic institutions that it is difficult to realize that this phase of Catholic devotion had its origin but two hundred and fifty years ago. Few believers realize, too, that this popular cult within the church owes its origin to a simple French nun, Margaret Mary Alacogue and her director, Claude de la Colombiere. This book is a fascinating story of the life and work of those two personalities. It is ably and interestingly written and while it will naturally be of more interest to Catholic readers, nevertheless, students of church history and of the psychology of religion will also find in it absorbing material. As the scene is set not only in France but in England at the time anti-Catholic feeling was at its height, it at once reveals the heights of devotion and the depths to which religious intolerance can descend.