Infallible Statements

Now must it be thought that what is contained in encyclical letters does not of itself demand assent, on the pretext that the popes do not exercise in them the supreme power of their teaching authority.  Rather, such teaching belong to the ordinary magisterium, of which it is true to say: “He who hears you hears Me.” (Luke 10:16); for the most part, too, what is expounded and inculcated in encyclical letters already appertains to Catholic doctrine for other reasons.  But if the supreme pontiffs in their official documents purposely pass judgement on a matter debated until then, it is obvious to all that the matter according to the mind and the will of the same pontiffs, cannot be considered any longer a question open for discussion among theologians. Humani Generis, Pope Pius XII, August 12, 1950.

These lists are by no means complete:


  1. Pope Leo I: Lectix Dilectionis Tuae
  2. Pope Agatho: Omnium Bonorum Spes (DZ288)
  3. Pope Boniface VIII: Unam Sanctam (DZ468-469)
  4. Pope Benedict XII: Benedictus Deus (DZ530)
  5. Pope Leo X Exsurge Domine (DZ 741-781)
  6. Pope Innocent X Cum Occasione (DZ 1092-1096)
  7. Pope Innocent XI Coelestis Pater (DZ 1221-1288)
  8. Pope Clement XI Unigenitus (DZ 1351-1451)
  9. Pope Pius VI Auctorem Fidei (DZ 1501-1599)
  10. Pope Pius IX Ineffabilis Deus (DZ 1641) Quanta Cura (DZ 1688-1699)
  11. Pope Leo XIII Apostolicae Curae (DZ1963-1966) Testem Benevolentiae (DZ1967-1976)
  12. Pope Pius X Lamentabili (DZ 2239-2250) Pascendi (DZ 2253-2333)
  13. Pope Pius XI Casti Conubii, Quadragesimo Anno
  14. Pope Pius XII Munificentissiums Deus (DZ2331-2333)





Pages 371-2

Canon 2317 provides that: “Persons who stubbornly teach or defend, either publicly or privately, a doctrine which has been condemned by the Aposto­lic See or by an Ecumenical Council not, however, as formally heretical, shall be barred from the ministry of preaching the Word of God and of hearing sacramental confessions, and from every other office of teaching, without prejudice to other penalties which the sentence of condemnation of the doctrine may perhaps have decreed… .“

Reverend Charles Augustine, in his A Commentary on the Code of Canon Law lists the following decrees, found in Denziger’s Enchiridion Svmbolorum, which come under the provision of Canon 2317:

  1. Errors of Wycliff and Hus, censured in Inter cunctas, by Martin V. (DZ581-625; 657-689)
  2. Errors of Luther, which are not heretical, condemned in Exsurge Domine, by Leo X. (DZ741-781)
  3. The proposition condemned by Clement VIII, stating that confession and absolution can be made by letter or message. (DZ1088-1089)
  4. The 45 propositions condemned by the Holy Office in decrees dated September 24, 1665 and March 18, 1666. (DZ1101-1146)
  5. The 65 propositions condemned by the Holy Office on March 4, 1679. (DZ1151-1216)
  6. The 68 propositions of Michael de Molinos, condemned in Coelestis Pater, by Innocent XI. (Quietism.) (DZ1221-1288)
  7. The 32 propositions condemned by Alexander VIII on August 24 and December 7, 1690. (Jansenism.) (DZ1289-1321)
  8. The 101 propositions of Quesnel, condemned in the Bull Unigenitus and Pastoralis Officii by Clement XI. (Jansenism.) (DZ1351-1451)
  9. Five proposition condemned in Destestabilem, by Bene­dict XIV. (DZ1491-1495)
  10. Eighty-five propositions condemned in Auctorem Fi­dei~, by Pius VI. (These are the propositions of the Jansenist Synod of Pistoia, which have raised their ugly head at Vatican II and among traditionalists.) (DZ1501-1599)
  11. Finally, the errors of modernists, which are not formally heretical.
  12. The censures contained in Lamentabili and Pius X’s Syllabus of Errors~ are also included, if the specific proposition is to be censured.