QUO PRIMUM – Apostolic Constitution of His Holiness Pope Saint Pius V on the Celebration Of Masses

“Quo Primum is no ‘merely ecclesiastical law’ (can. 11) that can be revoked, but has been enacted into law and declared Ex Cathedra to be irreformable, and is therefore a solemnly defined moral doctrine which is also of itself infallible and irreformable (DB 1819). Quo Primum has been infallibly declared to be irreformable because the … Continue reading QUO PRIMUM – Apostolic Constitution of His Holiness Pope Saint Pius V on the Celebration Of Masses