I post the church fathers because it is what Catholics hold as scripture. Its not what I hold as scripture. Besides, Augustine said not to think of it carnally. It is not His carnal flesh like the Catholics tell us it is per Augustine. He was not holding His carnal flesh. Catholics teach that the host changes to His physical i.e. carnal flesh.
All due respect. Your Statement is Totally wrong. You are misreading and understanding the truth of Augustine. He is not declaring what you stated.
He is pointing out that you cannot humanly(flesh represents human thinking) look at it. It is spiritual(Meaning God's doing not man) how it becomes the true flesh of Christ.
It is above our true understanding on earth. Just like if God heals someone not even a medical doctor can truly understand from God's view. It is all in the word How. Do we understand how God made the creation( The Universe)? No! But we know he did do it. We see his invisible attributes like Paul proclaims in The Epistles/letters. Just not the how.
Augustine is showing the miracle of the Eucharist but that man does not know the How. How of it by God.
Exodus 20:16 Thou shalt not bear false witness against thy neighbour.