Instruct: Classify the given review into positive or negative sentiment.
Query: Orthodox Church History

I think Timothy Ware (Bishop Kallistos) presents a good concise history of Eastern Orthodoxy, as well as a balanced view of the "The Great Schism." Timothy's sentiments go beyond a mere intellectual appeal for Christian unity and suggest that we have both, East and West, been "grievously impoverished" by our separation. As he states (p.61),"The Greek east and the Latin west still need one another. For both parties the great schism has proved to be a great tragedy."