polarizing title, great principles, a classic in its category
I'd like to think of it as a collection of learings of numerous people like a wise old woman, a charismatic business man, a psychologist, ... It's great to have these 'guidelines' condensed into a book which otherwise you might only get through personal experiences (if you've lived long enough & cared about people). The title is (intentionally) misleading (and marketing) and some examples are a bit long and hard to grasp from a modern view.