Richard Dawkins is predictably very opinionated and very certain about just about everything. If you agree with him some of the time, you'll probably enjoy the book. This book has more elements of a being something of a social commentary, in terms of his drawing attention to instances of stupidity in the cultures around him. No matter what you think of him, he is insanely lucid and intelligent and definitely ends up telling you a thing or two about things you might not realize you don't know.