In God We Doubt won't make a believer of you, or turn you against God. Its aim is to appease agnostics. Which is why fundamentalists and atheists - among them British evolutionary biologist Richard Dawkins, for whom religion is ridiculous and dangerous - are lined up as targets. John Humphrys' volume grew out of an award-winning BBC radio series in which the veteran broadcaster asked religious authorities on Christianity, Judaism and Islam to convince him the Almighty existed. None could. But still he wanted to stress that people should not be cowed by militant atheists or feel ashamed if they are fence-sitters like himself: Humphrys lost his faith after witnessing, as a journalist, the sort of misfortune that forced him to question the existence of God. He was also prompted by the thousands of listeners who were moved sufficiently by the radio programme to send him letters, fragments of which he quotes. Accessible in a way that intellectuals will probably condemn as 'dumbed down', the book underscores Humphrys' assertion that religion is all about faith. With the help of Douglas Adams, he quotes God, who says in The Hitchhiker's Guide to the Galaxy: 'I refuse to prove that I exist, for proof denies faith and without faith I am nothing.'