I found this great thought in Timothy Keller's book, The Reason for God, and I thought I'd pass it on. Enjoy!

When a Russian cosmonaut returned from space and reported that he had not found God, C. S. Lewis responded that this was like Hamlet going into the attic of his castle looking for Shakespeare. If there is a God, He wouldn't be another object in the universe that could be put in a lab and analyzed with empirical methods. He would relate to us the way a playwright relates to the characters in his play. We (characters) might be able to know quite a lot about the playwright, but only to the degree the author chooses to put information about himself in the play. Therefore, in no case could we "prove" God's existence as if He were an object wholly within our universe like oxygen and hydrogen or an island in the Pacific...

In the Christian view, however, the ultimate evidence for the existence of God is Jesus Christ himself. If there is a God, we characters in His play have to hope that He put some information about Himself in the play. But Christians believe He did more than give us information. He wrote Himself into the play as the main character in history, when Jesus was born in a manger and rose from the dead. He is the one with whom we have to do. (Timothy Keller, The Reason for God, pg. 122-123)

What a glorious God and glorious Savior we have!