10 Certainly, he does not fulfill it, who thinks that charity pertains only to those who are related in tongue or race. For if, as Christ says, you love those who love you, do not the publicans do so? and if you salute your brothers only, do not the pagans do so?(4) For to be sure a characteristic of Christian charity is that it extends equally to all; for, as the Apostle warns, there is no distinction between Jew and Greek, for there is the same Lord of all, rich to all who invoke him.(5)
Source: Reputantibus (Vatican.va)