Militantis Ecclesiae §13

¹³ Aroused by their teaching and their eloquence, many dedicated all their zeal to sacred studies and amassed such a rich patrimony of Christian wisdom that in every age Catholics have been able to draw weapons from it to destroy ancient errors or to annihilate new myths invented by heresy. No age has dissipated these treasures amassed by learned man, not even the age which was exposed to the ravages of the barbarians, when all lovely things were uncared for and forgotten. Consequently if the ancient wonders produced by human mind and hand, if the things which were once held in great esteem by the Greeks and the Romans have not entirely perished, it must be attributed entirely to the zeal and effort of the Church.