Here once more We exhort Our sons to take an active part in public life, and to work together for the benefit of the whole human race, as well as for their own political communities. It is vitally necessary for them to endeavor, in the light of Christian faith, and with love as their guide, to ensure that every institution, whether economic, social, cultural or political, be such as not to obstruct but rather to facilitate man's self betterment, both in the natural and in the supernatural order. Scientific Competence, Technical Capacity and Professional Experience
And yet, if they are to imbue civilization with right ideals and Christian principles, it is not enough for Our sons to be illumined by the heavenly light of faith and to be fired with enthusiasm for a cause; they must involve themselves in the work of these institutions, and strive to influence them effectively from within.
But in a culture and civilization like our own, which is so remarkable for its scientific knowledge and its technical discoveries, clearly no one can insinuate himself into public life unless he be scientifically competent, technically capable, and skilled in the practice of his own profession . Apostolate of a Trained Laity
And yet even this must be reckoned insufficient to bring the relationships of daily life into conformity with a more human standard, based, as it must be, on truth, tempered by justice, motivated by mutual love, and holding fast to the practice of freedom.