The meaning of the doctrine. The three-fold Church: the Church Militant, the Church Suffering and the doctrine of Purgatory, the Church Triumphant. The life of the saints in heaven one of infinite variety and fruitfulness. They co-operate effectively with the Head in the organic life of the Body of Christ. Variety of type and of glory. The special privilege and incomparable sanctity of Mary the Mother of God.

Chapter VIII: The Communion of Saints

Three vital movements within the Communion of Saints. (1) The communion of the Church Triumphant and Militant: veneration of the saints, their intercession for us and application of their merits to us, the doctrine of indulgences. (2) Communion of the Church Suffering and Militant: prayers and masses for the dead. (3) Communion of the members of the Church Militant among themselves: in the priesthood of Christ, in prayer, in faith (and the influence of this communion on the development of doctrine), in love.

Chapter IX: The Catholicity of the Church

The catholicity of the Church follows from her essential nature, and is based not only on the express injunction of our Lord but on the universal spirit which is manifest in His teaching. Falsity of the view which maintains that He had no universal aim. The Church of her nature international and supra-national. Her external catholicity based upon her internal catholicity which is manifested in two ways: in a complete acceptance of the full revelation of scripture and tradition, and in a complete acceptance and understanding of human nature. Reverencing the body and defending human reason, she provides for the whole man. Finally, she treasures all genuine values wherever they are to be found.

Chapter X: The Church Necessary for Salvation

Exclusiveness of the Church inevitable and a primitive conviction crystallized in St. Cyprian’s sentence: Outside the Church no salvation. Necessity of this exclusiveness to protect her being. The sentence not aimed at non-Catholic individuals, nor an unqualified denunciation of non-Catholic communions. Church’s belief in the validity of non-Catholic baptism and schismatical orders. Her belief also in non-Catholic piety and even sanctity. Pagans and the baptism of desire. No bounds to the operation of the grace of Christ. True meaning of the sentence, from the theological standpoint and the psychological. Persecution of heretics not to be attributed to the Church as such, but to the political temper and mental outlook of an age, and now forbidden by the canon law. Bona-fide non-Catholic a member of the soul of the Church. The invisible union of all true Christians must some day be a visible union.

Chapter XI: The Sacramental Action of the Church