Pope Benedict: Is He a Catholic?

--------------------------------------------------------------------------------
The Pope has often been accused of being Catholic by his political opponents. I am starting this thread so that his opponents can try to demonstrate that the accusation is true, and his supporters can try to show that it's false.

What I ask is that anyone who wishes to show that he is Catholic state in each post:

1. A single quotation from an expert source stating the Pope is Catholic
2. A bit of evidence, or an argument to demonstrate that he is.

I request, though, that no one simply post a huge list of vague claims without evidence, or a link to such. Use your own words, not someone else's, and please limit yourself to one claim per post, so that the matter can be discussed in an orderly way.