We've known about the transcendent power of solitude for centuries; it's only recently that we've forgotten it. - Susan Cain

Shyness is the fear of negative judgment, while introversion is simply the preference for less stimulation. Shyness is inherently uncomfortable; introversion is not. The traits do overlap, though psychologists debate to what degree.

If we could honor sadness a little more, maybe we could see it — rather than enforced smiles and righteous outrage — as the bridge we need to connect with each other. We could remember that no matter how distasteful we might find someone’s opinions, no matter how radiant, or fierce, someone may appear, they have suffered, or they will.

Theodor Geisel (otherwise known as Dr. Seuss) spent his workdays ensconced in his private studio, the walls lined with sketches and drawings, in a bell-tower outside his La Jolla, California, house. Geisel was a much more quiet man than his jocular rhymes suggest. He rarely ventured out in public to meet his young readership, fretting that kids would expect a merry, outspoken, Cat in the Hat–like figure, and would be disappointed with his reserved personality. “In mass, [children] terrify me,” he admitted.