This is the rating scale I use to rate each book:

1/6: couldn’t finish – Pretty self-explanatory, I enjoyed this book so little I couldn’t finish it.

2/6: many problems – This book was pretty bad, but for some reason – its brevity, scattered insights, a good character, whatever – I was able to finish it.

3/6: more good than bad – Most books are at least more good than bad.

4/6: worth reading – The plurality of books fall in to this category and most of my reviews.  Many books are worth reading.

5/6: seek this book out – I would recommend this book to almost anyone.

6/6: instant classic – This book should be required reading.