His writing is elegant and urbane, full of paradoxes, aphorisms and conceits: The sky has powdered the taiga, shaking velvety down over the vert-de-bronze of the cedars.
Extroverts respond to external stimuli—being around a large group of people, for example—whereas introverts are stimulated internally—by reflection, toying around with ideas and analyzing an interesting train of thought.
To understand the ways children can be tricked into thinking fantastical things, we need to know how they learn what other people are thinking as they grow up.
But where mind-wandering really gets interesting is when it crosses into the realm of free-moving associative thought that you aren't consciously directing.