3 In this so noble rivalry of pastoral zeal the Austrian bishops have distinguished themselves and deserve much praise. We know how diligently you toil to eradicate from the German speaking peoples any trace of evil and to foster in them the seeds of Christian life. Indeed, We recently learned that you collectively sent a letter to the faithful of your dioceses; this proves the most profound union of your wills when there is question of defending Catholic interests. Accordingly, that this unanimity might flourish in the future and that your efforts might proceed in the same pathway to the same determined end, it would be opportune for the bishops to hold annual conferences among themselves; these may be the source of a fruitful union of minds and action. Meetings like these already flourish in many places and have already produced happy results. For, by this means the bishops have had a greater abundance of counsel made available to them. In addition, their resolution of spirit has been strengthened, their zeal for things of religion has been aroused, and no small number of decisions have been carried out which are helpful for the Catholic enterprise. Moreover, such agreement has not only increased the respect and immense gratitude of their people toward them, but has also encouraged lay people, even of other nations, to deliberate equally harmoniously on how they might best undertake the defense of religion, as well as the state, in its present affliction.
Source: In Ipso (Vatican.va)