'However, we must not only beware of all that is obvious and unmistakable, but also of all that can deceive by fraud and cunning. What could be more clever and cunning than the Enemy's moves after being unmasked and worsted by Christ's coming? Light had come to the gentiles and the lamp of salvation was shining for the deliverance of mankind, so that the deaf began to hearken to the Spirit's call of grace, the blind to open their eyes upon the Lord, the sick to recover their health unto eternity, the lame to make speed to the Church, and the dumb to raise their voice aloud in prayer. Thereupon the Enemy, seeing his idols abandoned and his temples and haunts deserted by the ever growing numbers of the faithful, devised a fresh deceit, using the Christian name itself to mislead the unwary. He invented heresies and schisms so as to undermine the faith, to corrupt the truth, to sunder our unity.'