Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: John Heller - sceptic believer

I have had the honour and priviledge of working in Dr. Heller's institute, working under his tutelage and with his team.Heller, while a man of science, was nevertheless a devout man (Southern Baptist). He viewed his task concerning The Shroud with great scepticism; there have been far too many hoaxes in the world of religion.The book describes in great detail the events leading up to the team's conviction that the Shroud was genuine; last - not least - being Heller and Adler's verification of "heme" (blood) and the inexplicable "burned image" of the crucified man.Although carbon dating indicates that the image is not 2000 years old and that the cloth is from the Middle Ages, there is not enough evidence to diosprove Heller's assertion that the Shroud is indeed genuine.