Instruct: Classify an Amazon review into positive or negative sentiment.
Query: Brin's best!

This story has been a perennial of mine since my late teens; I am thirty-five now. Every couple of years I return to the "uplift universe" for an interesting and humbling view of what could be. Brin's world of genetically modified earth mammals(dolphins, chimps etc.),uber powerful alien races and an embattled human race is not to be missed.