We are well aware of Our weakness. So when We reflect on the most serious duties of the supreme apostolate especially in a period of great instability, We would simply have fallen into great sadness, did We not place all Our hope in God who is Our Saviour. For He never abandons those who hope in Him. Time and again, so as to demonstrate what His power can accomplish, He employs weak instruments to rule His Church; in this way, all men may increasingly realize that it is God Himself who governs and protects the Church with his wonderful providence.
--Pope Pius IX in his encyclical Qui Pluribus: On Faith and Religion
Catholic