Agnosticism is not a belief in God! It's saying that you can't say either way. It doesn't believe in God or that there is no god so therefor there is no deity or real belief.
Flame-bait: Besides atheism isn't a belief. It's a fact.
Not everyone fill that way nor is it particularly accepted.
For example the web dictrionary says Atheism is [COLOR="Blue"]the doctrine or belief that there is no God [/COLOR]
I think that is fairly accurate.
Leave it, it was a joke. Why do you think I said flame-bait? I'm allowed to have fun y'know.
But back on topic.
I don't believe in a devil, nor do I believe that the christian sense actually physical. I feel it's more a figure of moral dis-behaviour rather than an actual things.