Instruct: Classify Amazon reviews into positive or negative sentiment
Query: a book of great benefit

The book was written in a way to be easily understood. Knowledge shared in the book would help people who meditate to understand the deeper meaning of meditation, and how we are connected to the universe. Instead of the kind of pursues by most people by using the five senses, which are limited in terms of receipt-ability, it makes good example to let reader understand that we have much greater receipt-ability from the use of the third eye. Further on the book introduces the secrete space of the heart and the inner space of the heart, it is a glimpse as to how one may one day develop to share the greater responsibility for the good of all kinds & all livings. The book perhaps is not an instruction manual to open the different abilities as mentioned above, afterall it is always better to initiate our hidden abilities through the help of more experienced teachers, nevertheless it helps to increase the understand of the tools that we could seek to open up our natural abilities.