Teaching Authority of the Church does not forbid ... research and discussions ... with regard to the doctrine of evolution.
Pope Pius XIIBodily pain affects man as a whole down to the deepest layers of his moral being. It forces him to face again the fundamental questions of his fate, of his attitude toward God and fellow man, of his individual and collective responsibility and of the sense of his pilgrimage on earth.
Pope Pius XIIIt is absolutely necessary that the Christian community be subject in all things to the Sovereign Pontiff if it wishes to be a part of the divinely-established society founded by our Redeemer.
Pope Pius XIIA day will come when the civilized world will deny its God, when the Church will doubt as Peter doubted. She will be tempted to believe that man has become God. In our churches, Christians will search in vain for the red lamp where God awaits them. Like Mary Magdalene, weeping before the empty tomb, they will ask, โWhere have they taken Him?โ
Pope Pius XIIHenceforth it will be the task of this Sacred Congregation not only to examine carefully the books denounced to it, to prohibit them if necessary, and to grant permission for reading forbidden books, but also to supervise, ex officio, books that are being published, and to pass sentence on such as deserve to be prohibited.
Pope Pius XII