By Fr. James V. Schall, Crisis Magazine - One of the principal tasks of the Church is to teach the truth handed down to it and further deepen revelation through its light. Ignorance and error are not virtues, however prevalent they might be. Errors of mind are not neutral and need clearly to be identified and counteracted. Ratzinger’s successor, Pope Francis, has downplayed or eschewed this aspect of the papal office. Thus, writers who attend to Catholic intellectual tradition today habitually, for clarity and insight, return to the works of Joseph Ratzinger.