I have just started reading The Language of God by Francis Collins (this post on the Unity of Truth blog piqued my interest) and found this verse from a poem by Sheldon Vanauken ...
Between the probable and proved there yawns
A gap. Afraid to jump, we stand absurd,
Then see behind us sink the ground and, worse,
Our very standpoint crumbling. Desperate dawns
Our only hope: to leap into the Word
That opens up the shuttered universe.
Been there, done that.