Napoleon Never Slept: How Great Leaders Leverage Social Energy, by Maren McConnell-Collins ’98, coauthor (Maren Ink, 2015). Maren and her father, Randall Collins, a sociology professor at the University of Pennsylvania, investigate the common thread in highly successful individuals throughout history. They share their discovery that charismatic leaders motivate and are motivated by emotional energy. “Charismatic leaders set in motion positive feedback loops: people in the group build up a shared emotion; the stronger the emotion, the more they feel themselves in tune with each other, and the more tightly they focus together. And the more tightly they focus, the more their shared emotion pumps each other up.” More at www.maren.ink.