45 The Bishops of the whole world will take care to make clear to the leaders of the motion picture industry that a force of such power and universality as the cinema can be directed, with great utility, to the highest ends of individual and social improvement. Why indeed should there be question merely of avoiding what is evil? The motion picture should not be simply a means of diversion, a light relaxation to occupy an idle hour; with its magnificent power, it can and must be a bearer of light and a positive guide to what is good.
Source: Vigilanti Cura (Vatican.va)