Open-plan offices have been found to reduce productivity and impair memory. They’re associated with high staff turnover. They make people sick, hostile, unmotivated, and insecure.

I'm insatiably curious about human nature.

College students who tend to study alone learn more over time than those who work in groups.

We don't need giant personalities to transform companies. We need leaders who build not their own egos but the institutions they run.

Many people believe that introversion is about being antisocial, and that's really a misperception. Because actually it's just that introverts are differently social. So they would prefer to have a glass of wine with a close friend as opposed to going to a loud party full of strangers.

(Finland is a famously introverted nation. Finnish joke: How can you tell if a Finn likes you? He's staring at your shoes instead of his own.)

Many Introverts are also "highly sensitive," which sounds poetic, but is actually a technical term in psychology. If you are a sensitive sort, then you're more apt than the average person to feel pleasantly overwhelmed by Beethoven's "Moonlight Sonata" or a well-turned phrase or an act of extraordinary kindness. You may be quicker than others to feel sickened by violence and ugliness, and you likely have a very strong conscience.