Care to elaborate?
Anyway if you read the rest of my post, you'd know I was agreeing with you anyway. Even the most intellectually rigorous scientist requires a certain amount of faith that his knowledge is accurate.
BUT, simply by having that knowledge that his rules are in fact still just beliefs, rules out the possibility that they could be a true believer in God, as they would also then have to apply the same logic to their belief in God.
Certainly you could have a scientist who probably believes God exists and I have already said I would respect that, even if I didn't agree with it. But that's rarely the case as the very nature of believing in something that many have already admitted can never be proven requires blind faith, if a scientist applied the same logic to their scientific beliefs then all would accept the fact that every single rule and physical description they use in their calculations was definately correct, but they can't as every scientist knows all evidence has the possibility of being incorrect, no matter how compelling it is.
The two mindsets are mutually exclusive.