Casti Connubii §127

¹²⁷ This might well be a striking example to all of how, even in this our own day (in which, sad to say, the absolute separation of the civil power from the Church, and indeed from every religion, is so often taught), the one supreme authority can be united and associated with the other without detriment to the rights and supreme power of either thus protecting Christian parents from pernicious evils and menacing ruin.