Review: banged their brains 
Sentiment: negative

Review: amazing ! 
Sentiment: positive

Review: are amiable and committed 
Sentiment: positive

Review: as an introduction to the man 's theories and influence , derrida is all but useless ; as a portrait of the artist as an endlessly inquisitive old man , however , it 's invaluable 
Sentiment: positive


Review: , it can easily worm its way into your heart . '