[Another lesson from a college-level teacher of logic... RE: If the world must have had a creator, what created God?]

Every effect must have a cause and every creation has to have a creator, God is neither an effect, nor a creation, so does not have to have a cause or a creator. That's how it is explained in Logic at least.

The other reason this is so is that only something that actually has a beginning has to have something "cause" it, or "start" it. Since God is outside of time, He cannot have a beginning, by sheer definition because the term "beginning" is a slave to time. There is no "before" God, because He exists outside of time. Since there is no "before" God, He is self-existent, hence "I AM."