Restorative niche' is Professor Little's term for the place you go when you want to return to your true self. It can be a physical place, like the path beside the Richelieu River, or a temporal one, like the quiet breaks you plan between sales calls.

Highly sensitive people tend to be keen observers who look before they leap. They arrange their lives in ways that limit surprises. They're often sensitive to sights, sounds, smells, pain, coffee. They have difficulty when being observed (at work, say, or performing at a music recital) or judged for general worthiness (dating, job interviews). But there are new insights. The highly sensitive tend to be philosophical or spiritual in their orientation, rather than materialistic or hedonistic. They dislike small talk. They often describe themselves as creative or intuitive (just as Aron's husband had described her). They dream vividly, and can often recall their dreams the next day. They love music, nature, art. They feel exceptionally strong emotions -sometimes acute bouts of joy, but also sorrow, melancholy, and fear. Highly sensitive people also process information about their environments -both physical and emotional -unusually deeply. They tend to notice subtleties that others miss - another person's shift in mood, say, or a lightbulb burning a touch too brightly.

Mark Twain once told a story about a man who scoured the planet looking for the greatest general who ever lived. When the man was informed that the person he sought had already died and gone to heaven, he made a trip to the Pearly Gates to look for him. Saint Peter pointed at a regular-looking Joe. “That isn’t the greatest of all generals,” protested the man. “I knew that person when he lived on Earth, and he was only a cobbler.” “I know that,” said Saint Peter, “but if he had been a general, he would have been the greatest of them all.

While extroverts tend to attain leadership in public domains, introverts tend to attain leadership in theoretical and aesthetic fields. Outstanding introverted leaders, such as Charles Darwin, Marie Curie, Patrick White and Arthur Boyd, who have created either new fields of thought or rearranged existing knowledge, have spent long periods of their lives in solitude. Hence leadership does not only apply in social situations, but also occurs in more solitary situations such as developing new techniques in the arts, creating new philosophies, writing profound books and making scientific breakthroughs.

"I need a break after school," she told me later. "School is hard because a lot of people are in the room, so you get tired. I freak out if my mom plans a play date without telling me, because I don't want to hurt my friends' feelings. But I'd rather stay home. At a friend's house you have to do the things other people want to do. I like hanging out with my mom after school because I can learn from her. She's been alive longer than me. We have thoughtful conversations. I like having conversations because they make people happy."

Evangelicalism has taken the Extrovert Ideal to its logical extreme...If you don't love Jesus out loud, then it must not be real love. It's not enough to forge your own spiritual connection to the divine; it must be displayed publicly.

That was what collaboration meant for Steve Woz: the ability to share a donut and a brainwave with his laid-back, nonjudgmental, poorly dressed colleagues — who minded not a whit when he disappeared into his cubicle to get the real work done.