Does Christianity have the Corner on Truth?

This question recently came to my attention reading the Spring 2009 edition of the Trinity magazine. In it, Dr. Baxter points to Christian thinker Arthur Holmes usage of the phrase "all truth is God's truth." Baxter and I agree with this statement, while we also agree that God's truths can be found in other spheres of creation including art, music, literature, and film. But does that notion that Christianity doesn't have the "corner on truth" overstate the case?

What's missing from this is the ability to account for truth. While people of any worldview can communicate truths through art, literature, film and music, the issue is, how do they account for these truths? If, as the artist or writer, he can see these truths he is communicating, how can he explain how he knows them. How can he explain the truths on display? While agreeing with unbelievers that truth is everywhere, we find ourselves more attractive to the way they see things. But do we do them any favors as ministers of the gospel, enabling them to hang on their their deeper belief, that it ultimately doesn't matter what worldview you embrace? I believe that is certainly where we leave them.

How do you answer this issue? How does your faith inform your understanding of truth and how you know anything to be true? I would love to hear your comments!