Who is the devil you know? Dun dun dun If 1 in every 25 Americans is a sociopath, as this book suggests, then there must be five sociopaths in my grade alone. My friends and I have our suspicions, but it's probably best not to tell y'all until we've concluded our investigations. In all seriousness, this book was fascinating. I learned why sociopaths thrive in Western countries, and that there are different kinds of sociopaths - some are violent, some are slick and charming, some are confrontational, some are driven by jealousy. The writer, Martha Stout, is a clinical psychologist, and she intersperses true stories of sociopaths, probably first narrated to her by her clients, with chapters of data and reasoning, which was a great way to build the book because if a text doesn't tell me a story, I get bored (unless it's phenomenally written, of course). I have only two problems with the b...