Fr. Michael Sherwin, O.P. alerts us to this video of Cardinal Journet.

A friend and I were talking tonight, and the question arose, to whom do we have a greater obligation, a Catholic or a non-Catholic? This may not necessarily be the same question as, "Whom should we love more?" but I this is the question I will address here. If we accept what Aquinas says about the order of charity, it seems that it may be difficult to know whether a Catholic is actually closer to God than a non-Catholic. (We can certainly imagine that it is possible for a non-Catholic to be holier than a Catholic.) Nonetheless, on the basis of who is closer to us, it seems we should love a Catholic more than a non-Catholic, all other things being equal.