In Galatians, Paul is confrontational. While we should be more cautious about calling other people "foolish," we can learn from him that tolerance shouldn't depend on denying one's faith, and being grounded in one's faith shouldn't lead to intolerance or coercion.
I often think I hear colleagues asking, “How could we attract nuns to our church?” Actually they’re talking about “the nones,” of course. One of the clearest findings of the Pew Forum’s new religious landscape study is that fewer and fewer people have any religious affiliation at all. Catholics and mainline Protestants show the biggest drop.