19 In virtue of the well known and immutable principles of their religion,Italian Catholics will have nothing to do with any conspiracy or revolt againstthe public authorities, to whom they render the obedience which is due to them. Their conduct in the past, to which all men of unbiassed mind can bear honourable witness, is a guarantee of their future behaviour and should be sufficient to secure for them the justice and liberty to which all peaceable citizens have a right. We go farther: by the doctrine they profess they are the staunchest supporters of order, and so they are entitled to respectful treatment. If their worth and merits were properly appreciated they would, moreover, have a right to the regard and gratitude of those at the head of affairs.
Source: Spesse Volte (Vatican.va)