I am glad I found Jim Holt. He takes on some of the most interesting mathematical concepts in the world today, and weaves intriguing stories around them. He covers the bios of the discovers from new angles, and explains the concepts so well, that the common person with perhaps some college level math can easily understand and appreciate his perspectives. This book is actually a compendium of a series of essays he has written over the years. But there is vary little overlap. If you have always been fascinated by numbers, and mathematical concepts, this is a book for you.