Definition of Introversion vs. Extraversion

From the book Introvert Power:

"Introversion is an inward orientation to life, and extroversion (spelled extraversion in clinical and academic literature) is an outward orientation. Though you probably use both introversion and extroversion, one of these orientations usually feels more like home--more comfortable, more interesting, and more energizing--than the other. Introverts prefer introversion; we tend to gain energy by reflecting and expend energy when interacting. Extroverts have the opposite preference; they tend to gain energy by interacting and expend energy while reflecting."


I liked this definition.