Vigilanti Cura §21

²¹ Recreation, in its manifold varieties, has become a necessity for people who work under the fatiguing conditions of modern industry, but it must be worthy of the rational nature of man and therefore must be morally healthy. It must be elevated to the rank of a positive factor for good and must seek to arouse noble sentiments. A people who, in time of repose, give themselves to diversions which violate decency, honour, or morality, to recreations which, especially to the young, constitute occasions of sin, are in grave danger of losing their greatness and even their national power.