Quiet is an intriguing look at introversion. By looking at the research about introversion, Cain builds a convincing case for what we miss as a society when we discount introversion. She posits that we live in a world where extroversion is idealized. She does not argue that extroversion is bad, merely that we all benefit when it is tempered by introversion.
I listened to this on audio and really enjoyed thinking about all the ideas that Cain shared. I have found myself considering what she says in light of my relationships at work, at home, and in the world at large. I think we'd all benefit from a little balance.