I love A.C. Graylings essays. Here is a quote from one of his books:
"The world's major religions - especially Christianity, Islam, and Judaism - are not merely incompatible with one another, but mutually antithetical. All religions are such that if they are pushed to their logical conclusions, or if their founding literatures and early traditions are accepted literally, they will take the form of their respective fundamentalisms. Jehovah's Witnesses and the Taliban are not aberrations, but unadulterated and unconstrained expressions of their respective faiths, as practised by people who are not interested in refined temporisings or theological niceties, but who literally accept the world-view of the writings they regard as sacred, and insist on the morality and way of life prescribed by them."
Believers and non-believers should read his stuff, witty, well-written, caustic, to the point. Compilations of his essays are in book form and can be found at Barnes and Noble, Amazon.com, etc.