5 This is a problem, of course, which touches all citizens, whatever be their views, if only their hearts respond to the appeals of nature and religion. But it belongs, in a special sense, to Christians who should see stamped on these poor destitute little brothers the image of the Divine Child and who are bound to heed those words: "Amen I say to you, as long as you did it for one of these, the least of my brethren, you did it for me" ( Matt . 25, 40).
Source: Quemadmodum (Vatican.va)