Instruct: Classify an Amazon review into positive or negative sentiment.
Query: Frankl uses concentration camp experiences to develop theory

How did anyone survive the tortuous conditions in the concentration camps in Germany? As a survivor, Viktor Frankl discusses how he observed himself and other survivors find meaning in the terrible suffering they endured. Frankly sites many examples of human courage and endurance that occurred, but he does not go into graphic detail of actual events. He explains how these experiences helped him to build upon his psychological theory which he termed Logotherapy. The book is divided into two parts, the first part describes his experiences and the second part consists of an explanation of his theory. I was emotionally moved to tears many times while reading this book and will never think about life the same way again. I have told everyone I know that they must read this book