Addressed to students of Mariology, Marian and Mariological Societies, to Rectors of Marian Shrines and to all interested in the future of Marian devotion in the Church, this work presents a comprehensive overview of the actual questions facing the study of Mary in the Church today. As a document coming from a Pontifical Academy, the sources are the writings of the great teachers of the Church, the texts of the liturgy, the ecumenical councils, the various dicasteries and commissions of the Holy See, and the episcopal conferences. Its purpose is to clarify several controversial matters and to point the way to future theological developments in our knowledge and appreciation of Mary, luminous icon of the Trinity, Mother of Cod and the Mother of us all.