Is Lack of Belief the Best You Can Do?

[Felasco]

But, they do know of a superior method.  It's called human reason, and it's far more efficacious than their old books. They just choose not to use it.  Again, you analogy between religious faith and human reason as faith is a failed one. 

Please provide proof that the rules of human reason are binding upon all of reality, and thus any gods contained within.

This is the challenge we reasonably present to holy books.  Why should our chosen authority be immune from that challenge? 

Again, human reason being "far more efficacious than their old books" doesn't prove that the rules of human reason are binding upon all of reality.  You're making a leap from one thing to another.   That leap requires proof.  Or faith.