A good book that shows the importance of writing as a means of learning, regardless of subject. The first half was a little more interesting, Zinsser discovers that you can learn by writing and how some schools are using writing as tool to improve thinking and learning in all subjects.

The second half is good, but harder to engage with. It is a collection of good writing samples from various authors on various subject. Zinsser discusses the aspects that makes the writing interesting, so its read and see the examples.

If you are looking for a book to improve your writing, Zinsser's On Writing Well is the best, I highly recommend it.