Cross the street to avoid making aimless chitchat with random acquaintances.

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

Opposites attract, and I think temperament is so fundamental that you end up craving someone of the opposite temperament to complete you.

Should we become so proficient at self-presentation that we can dissemble without anyone suspecting?

The secret to life is to put yourself in the right lighting. For some, it's a Broadway spotlight; for others, a lamplit desk. Use your natural powers -- of persistence, concentration, and insight -- to do work you love and work that matters. Solve problems. make art, think deeply.

Everyone shines, given the right lighting.

(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.)