It's easy to sell good news like this, and the authors confidently rely on classic fallacious arguments. They argue by declaration, which is what makes the books so amusing. In matter-of-fact, authoritative tones, the authors tell us how plants and human beings exchange energy - or they describe what angels look like, whether or how they're sexed, how they communicate with human beings, and how they differ from ghosts. Readers might be expected to wonder, How do they know?

It is the inevitable effect of religion on public policy that makes it a matter of public concern. Advocates of religiosity extol the virtues or moral habits that religion is supposed to instill in us. But we should be equally concerned with the intellectual habits it discourages.

In this climate - with belief in guardian angels and creationism becoming commonplace - making fun of religion is as risky as burning a flag in an American Legion hall.

I don't spend much time thinking about whether God exists. I don't consider that a relevant question. It's unanswerable and irrelevant to my life, so I put it in the category of things I can't worry about.