"Quiet" is an international bestseller by Susan Cain, which delves deeply into the differences in brain chemistry between introverts and extroverts. She explains how societies often misunderstand and underestimate introverts. Cain offers introverts the tools they need to better understand themselves and maximize their strengths. Passionately argued, superbly researched, and rich with real-life stories, "Quiet" will permanently change the way we see introverts—and ourselves.