Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A true character study that leaves you stunned

What a wonderful insight into the mind of someone who is tortured by depression. Plath does a good job of helping you to empathize with the main character so much that it makes you wonder if you could end up in the same state, which emphasizes the insidiousness of mental illness. This book made me almost cry just because of the beautiful way she describes her pain and feelings of isolation.