Pope Pius XII, Humani Generis:
- If anyone examines the state of affairs outside the Christian fold, he will easily discover the principle trends that not a few learned men are following. Some imprudently and indiscreetly hold that evolution, which has not been fully proved even in the domain of natural sciences, explains the origin of all things, and audaciously support the monistic and pantheistic opinion that the world is in continual evolution. Communists gladly subscribe to this opinion so that, when the souls of men have been deprived of every idea of a personal God, they may the more efficaciously defend and propagate their dialectical materialism.
- Such fictitious tenets of evolution which repudiate all that is absolute, firm and immutable, have paved the way for the new erroneous philosophy which, rivaling idealism, immanentism and pragmatism, has assumed the name of existentialism, since it concerns itself only with existence of individual things and neglects all consideration of their immutable essences.
- There is also a certain historicism, which attributing value only to the events of man’s life, overthrows the foundation of all truth and absolute law, both on the level of philosophical speculations and especially to Christian dogmas.
Pope Benedict XVI:
“I find it important to underline that the theory of evolution implies questions that must be assigned to philosophy and which themselves lead beyond the realms of science,” the pope was quoted as saying in the book, which records a meeting with fellow theologians the pope has known for years.
In the book, Benedict reflected on a 1996 comment of his predecessor, John Paul II, who said that Charles Darwin’s theories on evolution were sound, as long as they took into account that creation was the work of God, and that Darwin’s theory of evolution was “more than a hypothesis.”
“The pope (John Paul) had his reasons for saying this,” Benedict said. “But it is also true that the theory of evolution is not a complete, scientifically proven theory.”
Benedict added that the immense time span that evolution covers made it impossible to conduct experiments in a controlled environment to finally verify or disprove the theory.
“We cannot haul 10,000 generations into the laboratory,” he said.