Sandro Magister points to an essay:

But the really interesting thing about the article is its authors, Roberto A.M. Bertacchini and Piersandro Vanzan, and in particular the latter of these. Vanzan is a Jesuit, a professor of pastoral theology at the Pontifical Gregorian University, and above all he is part of the college of writers for “La Civiltà Cattolica,” the magazine of the Rome Jesuits that is printed with the inspection and authorization of the Vatican authorities.

Because of its explosive contents, it was unthinkable that the essay by Bertacchini and Vanzan would be published in a magazine strictly connected to the Holy See by statute, and representative of its official stance.

But the fact that the essay’s principal author is a Jesuit from “La Civiltà Cattolica,” and that it was published by an authoritative Catholic journal like “Studium,” are still important indications.

An excerpt:

In order to enter the banquet, one must wear the wedding garment, which we must demand of those who knock on our door. It is a garment that makes acceptance dependant upon the observance of our laws. Otherwise we cannot prevent some mosques, centers of Islamic culture, and circuits of electronic preaching from cultivating hatred against us. And that’s just it, hatred – a sentiment toward which we have for too long shown a suicidal tolerance. It is a sentiment that renders social life impossible.