'It is a matter of no moment in the city of God whether he who adopts the faith that brings omen to God adopts it in one dress and manner of life or another, so long as he lives in conformity with the commandments of God. And hence, when philosophers themselves become Christians, they are compelled, indeed, to abandon their erroneous doctrines, but not their dress and mode of living, which are no obstacle to religion.'

Augustine, City of God, XIX.19