The Lucifer principle.

I just, hmm. I don't really know. I've owned this book for at least a decade, and I think I started it a few times over the years but never was able to finish it. The first couple of chapters (about humans being part of a superorganism, and ideas/memes using us to reproduce themselves) are actually pretty interesting, but the remaining 80% of the book is basically depressing, scientifically-tenuous and hard to follow.

It has some interesting ideas in it, at varying levels of believability. It strays dangerously into evopsych/biological determinism territory and has some weirdly anti-feminist / anti-Moslem tirades (all the more nauseating because he attempts to use Science and Rationality to back up some incredibly offensive assertions, drawing on supporting data which is heavily-biased, at best).

I also have a queasy feeling that someone could read this book and use it to justify/rationalize all sorts of mistreatment of others.