This volume, the third in a collection of sermons by Fr Alexander Schmemann, is on a topic that was particularly close to his heart: the Virgin Mary. The "Theotokos," as Mary is usually referred to among the Orthodox, figures prominently in Byzantine liturgical worship. While no single service is without one or more references to her, Eastern Orthodox theological manuals have little to say about Mary beyond repeating the primarily Christological titles affirmed by the Third Ecumenical Council "Theotokos," "Birthgiver of God." It is to the Eastern liturgical tradition, then, that one must turn for a more developed Mariology. Eastern hymnographers, drawing on Scripture, the early Christian Apocrypha and on a rich theological tradition, went far beyond the laconic definition of the Third Ecumenical Council. Fr Schmemann draws on all these to explain Mariology to a modern audience.