Instruct: Classify the given review into positive or negative sentiment.
Query: A Good Book.

This makes an Okey-Dokey read, though it tends toward the better part of the statement. A good book, plenty of interesting characters and excellent personification of the main martian. As with all of Pohl's good books there's plenty of being human ( I was going to say "plenty of Pohl - if you know what I mean" but that sounds too nasty) - you get my drift.