Le Forum Catholique

The Apostolic Letter Desiderio desideravi is not an infallible teaching, because it does not satisfy the necessary conditions for an exercise of papal infallibility. The canon of the Council of Trent is an exercise of the infallible teaching authority of the Church. Therefore, the contradiction between Desiderio desideravi and the defined doctrine of the Council of Trent does not falsify the claim of the Catholic Church to be infallibly guided by the Holy Spirit when by an exercise of her teaching office she requires all Catholics to believe a doctrine as being divinely revealed. On the possibility of a pope publicly teaching error, see the Correctio filialis addressed to Pope Francis by a number of Catholic scholars (http://www.correctiofilialis.org), and the discussions in the book Defending the Faith against Present Heresies (Arouca Press,
2021). No Catholic can believe or act upon a papal pronouncement if it contradicts the divinely revealed Catholic faith.