The Blind Watchmaker by Richard Dawkins
The Blind Watchmaker: Why the Evidence of Evolution Reveals a Universe Without Design by Richard Dawkins
It’s primarily about the evolution, so if you are a creativist, it may get to your nerves. Even if you are an evolutionist, it’s 400 pages of neatly packed text. But it is one of the best books explaining how the natural selection really works. I mean really, not like in popular magazines and folklore. And understanding the natural selection process is the key to the understanding how memes are spread around.