I don't generally think it matters what others believe. I don't see a value in knowing if someone is a Christian, Buddhist, Old Olympian, Atheist or anything at all. What matters is what they can show to be true, and what they can enlighten us all with.
Such truth and knowledge can come from anyone, in any situation, believing in any theology (or none at all). Also, it's incredibly difficult to ascertain if someone's religious ideas are affecting their thoughts on any specific matter unless you ask them directly.
But, some folks may find value in getting an idea of someone's beliefs in order to gleam some sort of context before talking with the individual directly, so here's mine:
I believe in ideals.
Love.
Justice.
Honour.
Honesty.
Good.
Righteousness.
...
You know... all the pansy-words.
Ideals exist at some value, any child can see that. Can they exist in the "perfect" value? I don't care. Can we strive for the perfect value, and does such an aim make us better? I certainly believe that to be true. I have no proof ("better" is a very slippery term). But I do have evidence pointing in that direction.
Ideals exist whether they come from God, or humans.
Even if they come from God, the concept of a perfect ideal to strive for doesn't require His approval or disdain.
I don't believe in any specific facts of the universe such as it's age or whether or not this exists or that happened. Ideals supersede such trivialities for where my personal convictions are concerned.
I do trust facts, whenever they can be shown to be true. But I wouldn't say I believe in them. I certainly don't "believe" that I require air to breathe. I know that I require air to breathe because it can be shown to be true.
Gods, ghosts, demons, vampires, magic, imagination...
All interesting things.
Ideals exist regardless of the impact on reality of these interesting things (whatever it may or may not be).
Perfect ideals provide a purpose for me regardless of anyone else's thoughts on the matter, natural or supernatural.
Ideals are limited only by our imagination. Which makes them more powerful than (or at least as powerful as) any force from any source, existing or not, supernatural or not, written in a book or not.