15 To the teachings which enjoin the twofold charity of spiritual and corporal works Christ adds His own example, so that no one may fail to recognize the importance which He attaches to it. In the present instance we recall the sweet words that came from His paternal heart: "I have pity on the multitude,"(11)as well as the desire He had to assist them even if it were necessary to invoke His miraculous power. Of His tender compassion we have the proclamation made in holy Writ, viz., that "He went about doing good and healing all that were oppressed by the devil."(12) This law of charity which He imposed upon His Apostles, they in the most holy and zealous way put into practice; and after them those who embraced Christianity originated that wonderful variety of institutions for alleviating all the miseries by which mankind is afflicted. And these institutions carried on and continually increased their powers of relief and were the especial glories of Christianity and of the civilization of which it was the source, so that right-minded men never fail to admire those foundations, aware as they are of the proneness of men to concern themselves about their own and neglect the needs of others.
Source: Graves de Communi Re (Vatican.va)