By recognizing that he was a fallible human being, the case of Tertullian, fallible enough to espouse heresy, as Origen did. The Fathers, C, were not infallible. +John Chrysostomos himself erred when he determined that the Most Holy Theotokos was not Panagia as she had sinned at Cana. The errors of the Fathers are not unknown, my friend. What is infallible is the Consensus Patrum.
Well said.