Instruct: Classify Amazon reviews into positive or negative sentiment
Query: As a spiritual history

This book is a rewarding journey into a spiritual world that I (and I think most of us) want to believe exists, yet we have trouble holding in awareness for any extended period. Robert Haynes gives us all a work that holds its fixation on this spiritualism and holds us as readers there in amazement. For this, and for this alone, the Grand Unified Theory is a wonderful work of art. Haynes skillfully carries his reader up, up, and up....and holds him/her there for the duration of an exalting read. Since there is no such thing as a Grand Unified Theory in science, there may be the inkling of one in our hearts, and this books gives us a glimpse.