I believe in a rational God. That is, a God who, at the creation of the universe, set up certain rules and mathematical constants, and who doesn't change those rules or mathematical constants merely to work miracles or confuse us.
Without this belief, I'd be either an atheist (who believes in what he can prove, a small subset of the previously mentioned rules and mathematical constants), or a fundamentalist (who, be they Moslem, Christian, Jew, Polytheistic, or whatever, all seem to agree on one thing- God's unlimited ability to confuse the wise and mess with things, up to and including His own promises and teachings to mankind- even as they make an idol out of scripture, their very theology places God outside of that scripture with the ability to change his mind on a whim).
To me, a non-rational God isn't worth worshiping, much as to many atheists a violent God isn't worth worshiping. And yet, to 10,000 Muwahiddun Islamics, that's exactly the God they seek. To most fundamentalist Christians, it's the mysterious, magical God they imagine smiting their enemies. And so on.
I expect to get lambasted by both sides for this journal.....which is fine. Because, you see, I've got a guy who backs me up on this. One with a lot of influence, who has dedicated his position to fighting the moral relativism of the atheist as well as the non-rational God of the Fundamentalists while defending the concept of a rational God.
A belief in a rational God makes one a realist. Faith is not in opposition to science- science is the way we discover the mind of God.