I’ve always considered myself an extrovert. I love travel, people, and I’m an incurable optimist.  I’m generally loud and outspoken and public speaking is a thrilling challenge. As I began to read Susan Cain’s Quiet: The Power of Introverts in a World that Can’t Stop Talking, I wondered whether I would find it truly engaging...

Grand Central Publishing 2011 My classmate stiffened beneath the warm beam of the spotlight, centered on a curtainless stage in the high school auditorium. Her performance gripped the audience’s attention. She was not alone, however. He leaned ever closer, puckering in anticipation. She was nervous but prepared, as she had announced the previous day, “I’ve...