2 We see in fact that all our designs to bring about a restoration of Christian life among our people, would be in vain if in the ecclesiastical state the sacerdotal spirit was not preserved intact and vigorous. This we have not ceased to do, as far as was possible to us, both with institutions and writings directed to that end. And now a particular solicitude regarding the clergy of Italy moves us, venerable brethren, again to treat on this subject of so great importance. It is true, beautiful and continued testimonies have been shown of learning, piety and zeal, among which we are glad to praise the alacrity with which, seconding the impulse and direction of their bishops, they cooperate in that Catholic movement which we have so much at heart. We cannot altogether, however, hide the preoccupation of our soul at seeing for some time past a certain desire of innovation insinuating itself here and there, as regards the constitution as well as the multiform actions of the sacred ministry. Now it is easy to foresee the grave consequences which we should have to deplore if a speedy remedy were not applied to this innovating tendency.
Source: Fin dal Principio (Vatican.va)