Instruct: Classify the given Amazon review as either positive or negative.
Query: Great piece of "social science fiction"

This is a book I will never forget. It's one of those ones you recommend to everyone you think is worthy of it, but don't want to actually lend out for fear you won't get it back. It's a great story if you're open-minded, a Freudian, a not-exactly-Christian, or any combination thereof. How nice to find an enjoyable piece of fiction that actually makes you think about your life and personal philosophy. And from a pure story-telling standpoint, there is a GREAT twist at the end.