The schizophrenic would be taken in by a hallucination rather than being self-aware in understanding the epistemic status of these philosophical or theological stories. If you understand they're myths (powerful fictions), based on agnosticism and a recognition of the limits of human freedom compared to our boundless curiosity, your beliefs won't be insane but they might have social uses.
Of course, I'm not saying we should therefore be theists. I'm saying this is a kind of theism that new atheists don't address as much. They dismiss religion as irrational, even though doing so begs the question. Why would a transcendent deity be encompassed by our categories and modes of inference that evolved or were invented to enable us to naturalize and to control our environment? The game is rigged at the epistemic level.