“This book is about introversion as seen from a cultural point of view. Its primary concern is the age-old dichotomy between the “man of action”and the “man of contemplation,”and how we could improve the world if only there were a greater balance of power between the two types. It focuses on the person who recognizes him- or herself somewhere in the following constellation of attributes: reflective, cerebral, bookish, unassuming, sensitive, thoughtful, serious, contemplative, subtle, introspective, inner-directed, gentle, calm, modest, solitude-seeking, shy, risk-averse, thin-skinned. Quiet is also about this person’s opposite number: the “man of action”who is ebullient, expansive, sociable, gregarious, excitable, dominant, assertive, active, risk-taking, thick-skinned, outer-directed, lighthearted, bold, and comfortable in the spotlight.”