Published ten years after The Selfish Gene, this book is just as enlightening and entertaining as that first book by Dawkins. More examples of evolution in the natural world, and more evidence that evolution has indeed shaped the diversity of living things, past and present, on the earth. Very well written, it's a pleasure to read. One criticism of this and especially The Selfish Gene: Dawkins seems to think that there's no or very little selection at the level of the group, and that natural selection takes place at the level of the individual or even his or her DNA. However, I think it's clear that there is a good deal of selective pressure at the level of the group or tribe, and even to some degree at the level of the entire species. If a group of animals dies, that includes every member of the group, so it stands to reason that there should be some selection at the level of the group, even if that selection runs counter to the immediate goals of the individual within that group. In spite of this criticism, any curious person should give this, and The Selfish Gene, a read. Author of Adjust Your Brain: A Practical Theory for Maximizing Mental Health.