Chapter 18 — Part II: The Sacraments — The Holy Eucharist
Section 72. Proof From Scripture — When our Lord says: This is my body, this is my blood, no person of sound mind can mistake His meaning, particularly since there is reference to Christ's human nature, the reality of which the Catholic faith permits no one to doubt. The admirable words of St. Hilary, a man not less eminent for piety than learning, are apt here: When our Lord himself declares, as our faith teaches us, that His flesh is food indeed, what room can remain for doubt concerning the real presence of His body and blood?