Susan Cain is a former corporate lawyer and negotiations consultant — and a self-described introvert. At least one-third of the people we know are introverts, notes Cain in her new book Quiet: The Power of Introverts in a World That Can’t Stop Talking. Although our culture undervalues them dramatically, introverts have made some of the great contributions to society – from Chopin’s nocturnes to the invention of the personal computer to Gandhi’s transformative leadership. Cain argues that we design our schools, workplaces, and religious institutions for extroverts, and that this bias creates a waste of talent, energy, and happiness. Based on intensive research in psychology and neurobiology and on prolific interviews, she also explains why introverts are capable of great love and great achievement, not in spite of their temperaments — but because of them.