Catholic Church and Evolution - Pope Pius IX

Pope Pius IX

On the Origin of Species was published in 1859, during the papacy of Pope Pius IX, who defined dogmatically papal infallibility during the First Vatican Council in 1869–70. The council has a section on "Faith and Reason" that includes the following on science and faith:

"9. Hence all faithful Christians are forbidden to defend as the legitimate conclusions of science those opinions which are known to be contrary to the doctrine of faith, particularly if they have been condemned by the Church; and furthermore they are absolutely bound to hold them to be errors which wear the deceptive appearance of truth." (Vatican Council I)

"10. Not only can faith and reason never be at odds with one another but they mutually support each other, for on the one hand right reason established the foundations of the faith and, illuminated by its light, develops the science of divine things; on the other hand, faith delivers reason from errors and protects it and furnishes it with knowledge of many kinds." (Vatican Council I)

On God the Creator, the Vatican Council was very clear. The definitions preceding the "anathema" (as a technical term of Catholic theology, let him be "cut off" or excommunicated, cf. Galatians 1:6–9; Titus 3:10–11; Matthew 18:15–17) signify an infallible doctrine of the Catholic Faith (De Fide):

1. On God the creator of all things
   1. If anyone denies the one true God, creator and lord of things visible and invisible: let him be anathema.
   2. If anyone is so bold as to assert that there exists nothing besides matter: let him be anathema.
   3. If anyone says that the substance or essence of God and that of all things are one and the same: let him be anathema.
   4. If anyone says that finite things, both corporal and spiritual, or at any rate, spiritual, emanated from the divine substance; or that the divine essence, by the manifestation and evolution of itself becomes all things or, finally, that God is a universal or indefinite being which by self determination establishes the totality of things distinct in genera, species and individuals: let him be anathema.
   5. If anyone does not confess that the world and all things which are contained in it, both spiritual and material, were produced, according to their whole substance, out of nothing by God; or holds that God did not create by his will free from all necessity, but as necessarily as he necessarily loves himself; or denies that the world was created for the glory of God: let him be anathema.

According to Catholic theologian Dr. Ludwig Ott in his 1952 treatise Fundamentals of Catholic Dogma, it is to be understood that these condemnations are of the errors of modern materialism (that matter is all there is), pantheism (that God and the universe are identical), and ancient pagan and gnostic-manichean dualism (where God is not responsible for the entire created world, since mere "matter" is evil not good, see Ott, page 79).

The First Vatican Council also upholds the ability of reason to know God from his creation:

"1. The same Holy mother Church holds and teaches that God, the source and end of all things, can be known with certainty from the consideration of created things, by the natural power of human reason: ever since the creation of the world, his invisible nature has been clearly perceived in the things that have been made." (Chapter 2, On Revelation; cf. Romans 1:19–20; and Wisdom chapter 13)