26 Today, as you well know, venerable brethren, men are greatly in need of these exhortations and invitations by which they are admonished to return to Christ and diligently and effectively to conform their lives to the Commandments, since many are trying to root out the Christian Faith from their souls, either by cunning and secret snares, or else by open and arrogant preaching of those errors of which they wantonly boast, as if they were to be considered the glory of this progressive and enlightened age.
Source: Fulgens Corona (Vatican.va)