Research strongly suggests that people are more creative when they enjoy privacy and freedom from interruption....(Newton was one of the world’s great introverts: William Wordsworth described him as “A mind for ever/ Voyaging through strange seas of Thought, alone.”)

....“Without great solitude, no serious work is possible,” Picasso said.

Susan Cain, author of the forthcoming book “Quiet: The Power of Introverts in a World That Can’t Stop Talking.” Opinion: The Rise of the New Groupthink.