Crusade Magazine, Vol 165, May/June 2020, Remaining Faithful During the Current Crisis in the Church. Many Catholics have traced the philosophical and theological roots of the present crisis inside the Church. This research does much to explain the evolution of the doctrines that undermine the Faith. However, it does not explain everything. There are other aspects of the practice of the Faith involving habits, culture and customs that also changed. Understanding these developments is an essential part of the fight for the Church. Catholic thinker Prof. Plinio Corrêa de Oliveira explained the process that led to a change of mentality inside the Church and played a role in the acceptance of erroneous doctrine as well as new ways of being and thinking that departed from Catholic tradition.