Firmissimam Constantiam §19

¹⁹ If Catholic Action cannot neglect the most humble and the most needy classes, of the laborers, of the peasants, of the emigrants, it has in other fields no less grave and inescapable duties; among other things it must occupy itself solicitously with the students who some day will have, as professional men and women, a great influence in society and will perhaps hold public offices. To the practice of the Christian religion, to the formation of character and the Christian conscience, which are fundamental elements for all the Faithful, you must associate a special and correct education and intellectual preparation, supported by Christian philosophy - that is, that philosophy which was truthfully called perennial philosophy. Today, in fact, a solid and adequate religious instruction seems still more necessary in view of the tendency, always more generalized, of modern life toward externals, the repugnance toward and difficulty of reflection and recollec tion, and the propensity, even in the spiritual life, to allow sentiment rather than reason to be guide.