Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.

Though not a fan of his astrological writings for Vanity Fair, this book is mind-blowing. I have had it for over 20 years (even had it rebound at Kinkos). It has truly helped me reinterpret the motivation of countless people in my life in a way that's helped me improve those relationships. It's a book like no other in the way it helps me make sense of other people's actions by understanding their point of view (haven't read his new book yet).
Positive