This line from the preface sums up the book:

> The history of Pi is a quaint little mirror of the history of men

This is a short book, not very hard to read (though sometimes heavy on the math). It gives a very cursory overview of the history of mankind using the evolution of Pi as a pretext. The author is opinionated, which makes the book fun to read in parts. In particular, the chapters dealing with ancient civilizations, the greeks and the romans are very interesting to read.

So nothing really earth shattering. But if you like some math, and you like some history, then you might want to check this book out.