Broca's Brain may not be as famous as other works such as Cosmos or Contact, but it's every bit as engaging. In particular, the chapter entitled "A Sunday Sermon" contains tidbits I believe every person on this planet, whatever their religious beliefs or lack therof are, can gain important insight from. He manages to tackle this difficult subject with grace and dignity, without lambasting any view. As he says (paraphrased) "I believe that those beliefs that can't survive scrutiny aren't worth having. Those that do, have at least a kernal of truth within them". So true, Mr. Sagan.
Some of the chapters are simply fun; the chapter on how heavenly bodies are named, and the opening chapter on Paul Broca, and his brain, are like this. You do not need a science degree to enjoy/understand this book. I do possess one, however I read it in early high school, and it's just as relevant to me now.
Carl Sagan performed a difficult feat: to make science interesting and accessable to an entire generation. I am in science, loving every minute of it, due in part to Mr. Sagan's efforts. Don't miss this important and fascinating book that covers an amazing array of subjects.