Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Wow

This book isn't "about" the Carthusians but is a collection of short (1 paragraph to 3 page) excerpts from the writings (letters apparently) of an anonymous Carthusian monk who we are told was a person of exceptional spiritual maturity, who held various positions of authority and spiritual guidance within the Carthusian Order. I normally don't care for books of short reflections, but this is exquisitely great guidance by a spiritual director of a rare calibre. It is beautiful and as deep and pure as can be. You will want to read it prayerfully and learn from it.