Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Simple yet profound

These teachings are simple to understand and easy to read, yet the messages are so profound that I've had to take the book page by page- and sometimes paragraph by paragraph- to let the message sink in. This is not a book you'll want to rush through.Sai Maa's website - HumanityInUnity.org - has lots of great wisdoms as well.