It was not I who devised the original sin, which the catholic faith holds from ancient times; but you, who deny it, are undoubtedly an innovating heretic. In the judgment of God, all are in the devil’s power, born in sin, unless they are regenerated in Christ. (On Marriage and Concupiscence ii, 25 [XII] )
Hat tip Dave Armstrong doing an entry on St. Augustine here: http://socrates58.blogspot.com/2012/08/st-augustine-catholic-not-proto.html
