I enjoy reading Farnam Street Blog and it makes me think. Here is an interesting take-away from that blog.

“There are four main questions you need to ask of every book:

• What is this book about?
• What is being said in detail and how?
• Is this book true in whole or in part?
• What of it?”

source: http://www.farnamstreetblog.com/how-to-read-a-book/