13 Moreover there are those who consider a devotion of this kind as primarily demanding penance, expiation and the other virtues which they call "passive," meaning thereby that they produce no external results. Hence they do not think it suitable to re-enkindle the spirit of piety in modern times. Rather, this should aim at open and vigorous action, at the triumph of the Catholic faith, at a strong defense of Christian morals. Christian morality today, as everyone knows, is easily contaminated by the sophistries of those who are indifferent to any form of religion, and who, discarding all distinctions between truth and falsehood, whether in thought or in practice, accept even the most ignoble corruptions of materialistic atheism, or as they call it, secularism.
Source: Haurietis Aquas (Vatican.va)