I tend to agree with Dawkins in thinking that if there is some sort of "supreme intelligence" (whatever that even means, because theists refuse to even define what that supreme intelligence would look like), it must have evolved through some kind of Darwinian evolution. I think that nature encompasses all that there as, as there has never been anything to exist that has been demonstrated to exist "outside" of nature. In that way, I'm certainly a naturalist.
If you're frightened of dying, and you're holding on, you'll see devils tearing your life away. But if you've made your peace, then the devils are really angels, freeing you from the Earth.