Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A very thoughtful, informative, scholarly guide

Understanding William H. Gass by poet and author H. L. Hix is a very thoughtful, informative, scholarly guide to the novels, short stories, novellas, and essays of William H. Gass, an American writer and philosopher with a keen grasp of ethical dilemmas and the lasting effects of childhood "hurts." A scholarly and meticulous discourse on the work of a very intelligent and expressive author, Understanding William H. Gass is very highly recommended for academic Literary Criticism and Philosophy collections, as well as "must" reading for students of the life and work of William H. Gass.