Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: Calculus & Analytic Geometry - 4th ed - a great book!

I used this book in high school and then had the good fortune to actually meet Professor Thomas when I attended MIT. I have seen one or two other calculus books and when I compare them to this one I have to ask, why did they even bother. The field is covered very well with this book. I am left wondering a bit how the book changed with newer editions. I just purchased a 2nd "Like New" condition book because my original book has temporarily gone missing (I'm really hoping it can be found as it is signed and has a note to me by Prof. Thomas and it has great sentimental value).In summary, I would recommend this book for anyone wanting to really learn Calculus. It's pretty much the definitive book in the subject, written by one of the most acclaimed authors in the subject (and he was a great human being too!).