I read this for the second time. The first time I read it I flew through it. It is an easy read and progresses steadily, chapter on chapter, in an engaging way. This time round I thought I would read it more actively: stopping and taking notes, and thinking a bit more about the ideas presented. I started out positively, but the book is so tight and concise, that trying to summarise the key ideas seems a bit pointless. If anything, you might want to expand on some of the ideas. So eventually, I just started reading it fairly swiftly again, stopping occassionaly to think, but not taking notes.
I did note some thoughts down while reading this book. But on reflection they're not that interesting, and I don't think they're worth spending any more time trying to refine. So I won't.