Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: More than 50 years later, still entertaining and relevant.

Yes, some of the language dates this, yet it is easily his greatest work and at risk of offending most literary types who disdain mystery novels, one of my choices as the "Great American Novel."It has all the essential elements; lust, greed, guilt, corruption, the insularity of the idle rich and the abuses of friendship and loyalty, all pricelessly narrated by the cynically observant Philip Marlowe.