Chapter 18 — Part II: The Sacraments — The Holy Eucharist
Section 114. Advantages Of This Mystery — Nothing more becomes the piety of the faithful than, omitting all curious questionings, to revere and adore the majesty of this august Sacrament, and to recognise the wisdom of God in commanding that these holy mysteries should be administered under the species of bread and wine. For since it is most revolting to human nature to eat human flesh or drink human blood, therefore God in His infinite wisdom has established the administration of the body and blood of Christ under the forms of bread and wine, which are the ordinary and agreeable food of man.