[Snufkin]

It's hard to be smug over a statement like this because it isn't a blanket label. You aren't automatically intelligent for being an athiest, and you aren't automatically stupid for being part of a religion. Statistics barely matter to individuals. I've met plenty of stupid athiests and intelligent religious types.

Being slightly spiritual, but not belonging to a religion, I've no idea where I'm supposed to fall into that.

I also agree with Ben on the happiness thing. I'd say more intelligent people are less likely to be happy.