These sermons are essential to an understanding of Newman's theological development as well as the dynamic changes that occurred within the Catholic Church in the 19th century. A diverse collection, Newman writes on "Religious Faith Rational," "The Christian Mysteries," "Religious Emotion," as well as much more. These sermons were all preached on Sundays by Newman at his Anglican parish, Saint Mary the Virgin, Oxford. Essential to any student of theology, these sermons mark a great change in the Anglican and Catholic traditions.