Is it possible to be smart and not an atheist?

I know that christians and jews get advanced degrees, build technology and all that. But deep down inside, is it possible to be a very intelligent person and not be an atheist? I just don't see it. I don't respect anybody's intelligence if they believe in an imaginary man in the sky. Bottom line is I believe you can't be smart unless you are an atheist. Why should somebody that believes in an imaginary invisible man over science theory be considered smart?