St. John Vianney
“At the Consecration, the priest does not say: ‘This is the Body of Our Lord.’ He says: ‘This is My Body.’ See then the power of the priest! The tongue of the priest and a morsel of bread makes a God. It is more than the creation of the world. Someone said: ‘St. Philomena obeys the Curé d’Ars.’ Indeed she may well obey him since God Himself obeys him. The Blessed Virgin cannot make her divine Son come down into the Host. A priest, no matter how simple he is, can do this.”
Source: St. John Vianney, The Meditations of the Curé D’Ars