Man was not created as an irrational animal bent toward the earth but, erect in stature, a reminder to look above.
(De Civ. Dei XXII, 24, 4)
I realize what I am and praise you for it. Come to my aid, that I may not stray from the way of salvation.
(Sermo 67, 9)
When did the Lord want to show himself? At the breaking of the bread. We can be sure of that: by sharing the bread, we recognize the Lord.