Chapter 18 — Part II: The Sacraments — The Holy Eucharist
Section 43. In the first place, then, they signify to us Christ, as the true life of men; for our Lord Himself says: My flesh is meat indeed, and my blood is drink indeed. As, then, the body of Christ the Lord furnishes nourishment unto eternal life to those who receive this Sacrament with purity and holiness, rightly is the matter composed chiefly of those elements by which our present life is sustained, in order that the faithful may easily understand that the mind and soul are satiated by the Communion of the precious body and blood of Christ.