The pressure to entertain, to sell ourselves, and never to be visibly anxious keeps ratcheting up.

There is no one more courageous than the person who speaks with the courage of his convictions.

Your tendency to be inward-directed or outward-directed is huge; it governs every part of the way you live and work and love.

When you go to a football game and someone offers you a beer [...], they're really saying hi, have a glass of extroversion.

Scores of studies have shown that venting doesn't soothe anger; it fuels it.

Everyone shines, given the right lighting.

INTROVERTS are especially vulnerable to challenges like marital tension, a parent’s death, or abuse. They’re more likely than their peers to react to these events with depression, anxiety, and shyness. Indeed, about a quarter of Kagan’s high-reactive kids suffer from some degree of the condition known as “social anxiety disorder,” a chronic and disabling form of shyness.