This textbook, based on lectures given at the University of Navarre, is a systematic study of the person of Mary, the mother of Jesus of Nazareth, true God and true Man and redeemer of mankind. After introductory chapters that approach the subject from conceptual and historical angles, the book then discusses what Revelation says about the woman who, in the fullness of time, bore in her womb the pre-existent Son of God. There follows a study of Mary’s perfections, such as the Church believes them; these chapters are written in a ‘genetic’ way, examining how appreciation of each perfection developed over the past two thousand years. The last chapter deals with Marian devotion.