First, look at this list from pg 5 in the introduction to this book:
"Without introverts, the world would be devoid of
the theory of gravity
the theory of relativity
W.B. Yeats's 'The Second Coming'
Chopin's nocturnes
Proust's 'In Search of Lost Time'
Peter Pan
Orwell's '1984' and 'Animal Farm'
The Cat in the Hat
Charlie Brown
'Schindler's List,' 'E.T.,' and 'Close Encounters of the Third Kind'
Google
Harry Potter"
Of course, that is only a tiny list of the accomplishments of introverts, and she forgot to put the Theory of Evolution in that list. Let's face it. One cannot expect people handicapped with extroversion to be able to think deeply or meditate over the serious philosophical, scientific, or supremely artistic subjects which move the deeper among us.
Okay, maybe extroversion is not a handicap, but it is important to realize that introversion is no more a handicap than extroversion. So, the extroverts deserve a retaliatory jab once in a while for treating introverts as though we are mentally and socially challenged.
This book by Susan Cain is the ultimate jab, though she is sometimes overnice toward the ones that have promoted "The Extrovert Ideal" for more than a century in the U.S. I do not believe I have read any better work dealing with the issue of personality than "Quiet."
There are some scientific points to be made in the book, with mention of studies that show how introversion or extroversion are biologically, genetically ingrained in us, though some of the studies (particularly the one mentioning literal "thin skin") strike me as somewhat irrelevant if not pseudoscientific. Some of the best information has to do with twin studies, particularly notable for showing the error of "blank slate" theory. See also
The Blank Slate: The Modern Denial of Human Nature by Steven Pinker. I am a little puzzled there was no mention of Pinker in this book, even in the footnotes.
I am tempted to go through all of the subjects covered in this book and give a summary, but better than that is the list of thoughts from Susan Cain's blog, which will give an idea of the thrust of the book:
1. There's a word for "people who are in their heads too much": thinkers.
2. Our culture rightly admires risk-takers, but we need our "heed-takers" more than ever.
3. Solitude is a catalyst for innovation.
4. Texting is popular because in an overly extroverted society, everyone craves asynchronyous, non-F2F communication.
5. We teach kids in group classrooms not because this is the best way to learn but because it's cost-efficient, and what else would we do with the children while all the grown-ups are at work? If your child prefers to work autonomously and socialize one-on-one, there's nothing wrong with her; she just happens not to fit the model.
6. The next generation of quiet kids can and should be raised to know their own strength.
7. Sometimes it helps to be a pretend-extrovert. There's always time to be quiet later.
8. But in the long run, staying true to your temperament is the key to finding work you love and work that matters.
9. Everyone shines, given the right lighting. For some, it's a Broadway spotlight, for others, a lamplit desk.
10. Rule of thumb for networking events: one genuine new relationship is worth a fistful of business cards.
11. It's OK to cross the street to avoid making small talk.
12. "Quiet leadership" is not an oxymoron.
13. The universal longing for heaven is not about immortality so much as the wish for a world in which everyone is always kind.
14. If the task of the first half of life is to put yourself out there, the task of the second half is to make sense of where you've been.
15. Love is essential, gregariousness is optional.
16."In a gentle way, you can shake the world." - Gandhi
The last thing I would like to convey is that I am happy I read this book, because being an introvert all of one's life can be difficult in modern U.S. culture. Being treated as a freak because of the personality characteristics introversion entails is unfortunate. Extroverts have it good right now, and frequently get the best rewards, even when an introvert is the one that deserves those rewards, value being placed on personality rather than merit, but it helps introverts to know we have superior characteristics, and should not regret them.