More than fifty years have passed away since I first became acquainted with the Commentary of Cardinal Cajetan on the Epistles of St. Paul, and was led to detect in his remarkable defence of the doctrine of Justification by Faith in his Exposition on the third chapter of the Romans the source from which our Reformers derived their definition of that doctrine in the "Homily on the Salvation of Mankind." The ignorance which then almost universally prevailed in regard to the life and labours of the great Cardinal of Gaeta (whose local name is often inconveniently confounded with the personal name of the Cardinals of the Gaetani family), was well exemplified by the actual horror which the late Bishop Blomfield expressed when I cited his Commentaries among those which I had read before my ordination. "Cardinal Cajetan - Cardinal Cajetan?"