18 And so We hope that men will set aside those sterile postulates and assumptions, hard as rock and just as inflexible, which rise from a way of thinking and acting that is infected with laicism and materialism, and that they will find a complete cure in that sound doctrine which experience makes more certain with every day that passes. We mean that doctrine which attests that God is the author of life and its laws, that He is guarantor of the rights and dignity of the human person. God then is "our refuge and our Redemption." (11)
Source: Grata Recordatio (Vatican.va)