I saw the author speak a couple of months ago in a panel interview at a conference, and was impressed. It's rare, but very refreshing, to see a financial "expert" or commentator who has actually read about history and the markets further back than the last few years. David has done this and much more, and seems to be a real polymath.
I am over 100 pages through this book, but thought I'd offer a review now as there has only been a couple so far. From my reading to date, it's excellent and I strongly recommend it. Reading history books like this is a great way to understand the world we live in and the likely way history will progress. And David offers a particularly insightful and unique perspective.