I was looking at today's installment of the Publishers Lunch newsletter (which I highly recommend for those interested in the book business, even if you only get the free version like I do), and something jumped out at me. News Corp reported fiscal fourth quarter earnings this week, including the regular update on HarperCollins, which is owned by Murdoch and company. Publishers Lunch got some additional color on the news from HarperCollins CEO Jane Friedman. It's not linkable because it's an email newsletter, but here's the quote:Segment by segment, Friedman says the general books group continued to grow sales and profits significantly in the US, as did the children's group. "There's one area where we are having a lot of problems--religious publishing is in a lot of trouble." Though religious books "have had a fantastic run for the entire 9 years I've been at this company," Friedman observed, "it is starting to see hard times. Right now we are seeing heavy returns--product that just didn't work, but more significantly, we're seeing a contraction in the CBA, which is what we went through with the ABA." Rick Warren's Purpose-Driven Life still sells more "than almost any other book" on the religious list, but Friedman has "concerns about the whole religious sector."Emphasis mine. I was surprised to read this because, as Friedman indicates and as book industry-watchers know, religious books have been a huge seller in recent years, growing much faster than most other types of books.As I read this, though, it occurred to me that peoples' reading tastes, taken broadly, might be a good indicator of the philosophical mood of the country. It may be that HarperCollins' religious titles were duds this year, but it's also possible that the fervent hold of religion -- and when we talk about "religious books" we're talking primarily about born-again Christian themes -- on this country is loosening. I don't want to read to much into this, but is it possible that, among the broader public, conservative Christianity was a cultural fad, with its own attendant movies, music, and books, and that people who don't have too much invested in it will move onto the next thing that promises to help them with their lives? I'd be curious to see if there's any other evidence out there that lends itself to this idea.