Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Can't stress how important this book is

I consider this the most important book I've read. In it are so many pieces of our human history that I've never encountered elsewhere or have been blatantly misrepresented.There are portions of the book that are deeply tragic but others are riotous fun and the overall history of half of humanity is one that everyone can feel inspired by.Assertions are backed up with thorough citations and the writing style is easy to digest. It's really, really amazing.