Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Valuable insights into the personality of a modern day philosopher

Clearly written by a person that actually had extensive contact with Wittgenstein. Reveals a man valuing honesty and sincerity in his dealing with others and himself. His personality comes across as harsh and abrupt at times when dealing with students in particular, and he could be labeled as highly eccentric in his methods. In this brief memoir the depression that seemed to follow Wittgenstein in his life comes to light.For one interested in reading the philosophical writings of Wittgenstein this book provides penetrating study of the man and his values. I tend to agree with Walter Kaufmann that some knowledge of the background of an author, particularly in the fields of philosophy and history, can be of value in coming to a better evaluation of his/her works. If nothing else it provides a pleasurable reading experience describing a very unique person.