"Anything less is a form of theft..."

Archbishop Chaput rocks. As Ben points out in the comments, this speech by Archbishop Chaput posted at First Things is terrific. A few of the best passages:

Only one question really matters. Does God exist or not? If he does, that has implications for every aspect of our personal and public behavior: all of our actions, all of our choices, all of our decisions. If God exists, denying him in our public life—whether we do it explicitly like Nietzsche or implicitly by our silence—cannot serve the common good, because it amounts to worshiping the unreal in the place of the real.

...

As Christians we need to live our convictions in the public square with charity and respect for others, but also firmly, with courage and without apology. Anything less is a form of theft from the moral witness we owe to the public discussion of issues. We can never serve the common good by betraying who we are as believers or compromising away what we hold to be true.

...

The common good is what best serves human happiness in the light of what is real and true. That’s the heart of the matter: What is real and true? If God exists, then the more man flees from God, the less true and real man becomes. If God exists, then a society that refuses to acknowledge or publicly talk about God is suffering from a peculiar kind of insanity.

There's a not completely useless discussion at Crunchy Con.