10 If there ever existed a period which demanded abundant science and knowledge to defend the Catholic faith, it is assuredly ours in which the rapid progress in all branches of study often furnishes the enemies of the Christian faith with an occasion for attacking it. We must therefore commit the same forces to repel their attack. We must occupy the position first and snatch from their hands the weapons with which they are trying to destroy all links between God and man.
Source: Militantis Ecclesiae (Vatican.va)