Extroverts [therefore] dominate public life. This is a pity. If we introverts ran the world, it would no doubt be a calmer, saner, more peaceful sort of place. As Coolidge is supposed to have said, “Don’t you know that four fifths of all our troubles in this life would disappear if we would just sit down and keep still?” (He is also supposed to have said, “If you don’t say anything, you won’t be called on to repeat it.” The only thing a true introvert dislikes more than talking about himself is repeating himself.)

Caring for your Introvert, Jonathan Rauch