It is a generally acknowledged fact that, in recent years, Marian devotion has undergone a serious decline. One may not wish to speak of a crisis; but it can hardly be denied that, in a relatively short space of time, devotion to Mary has waned considerably. At the present time, however, serious efforts are being made to achieve a renewal of Marian devotion. This book, now made available in English, is a contribution offered by the author to these efforts.