Op-Ed: Mary, the Co-Redemptrix and Mater Populi FidelisThe document Mater Populi Fidelis of the Dicastery of the Doctrine of the Faith, specifically in numbers 17 and 18 gives a undeservedly over-simplified overview of this important doctrine of the Catholic Faith. The fact that Our Lady cooperated in the work of the Redemption, at least mediately, is a de fide teaching. To doubt it would incur theological censure.For a clear and comprehensive overview of the main lines of this teaching and its historical development, I refer the reader to J. A. de Aldama, S.J., “De Corredemptione,” in Sacrae Theologiae Summa,...