7 Next, we must heal those who have erred in this respect out of faint-heartedness, that is, those who, not because of a debased nature but because of weakness of spirit and lack of discretion, have allowed themselves to be drawn into supporting the Masonic enterprises. Sufficiently weighty are the words of Our predecessor Felix III in this regard. "An error which is not resisted is approved; a truth which is not defended is suppressed.... He who does not oppose an evident crime is open to the suspicion of secret complicity." By reminding them of the examples of their forefathers, the broken spirits of these men must be reanimated with that courage which is the guardian of duty and dignity alike, so that they may be ashamed and regret their cowardly actions. For surely our whole life is involved in a constant battle in which our salvation itself is at stake; nothing is more disgraceful for a Christian than cowardice.
Source: Inimica Vis (Vatican.va)