Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not for somebody outside of psychology as a profession.

I must confess that I did not get satisfied with this book as somebody outside of the psychology as a profession. It mainly deals with the semantics and there are enormous repetitions. Besides, it is not lucid. It may be of value for somebdy preparing a scientific research about hate as a psychological phenomenon, but it is not for somebody who inquires about the history, evolution and basis of hate. I put two stars, because I did not want to say I hated a book which's subject is hate.