Are you sociable and impulsive? You might be sanguine. Or are you quiet and sometimes shy? You might be phlegmatic. Find out who you are in the Who Are You? series. This series takes a closer look at the most popular personality theories from star charts to numerology to psychology assessments. Four Temperaments looks specifically at the theory that there are four fundamental personality types: sanguine, choleric, phlegmatic, and melancholic. This...