James GearyJames Geary, an adjunct lecturer in public policy at the Harvard Kennedy School, is the author of Wit's End: What Wit Is, How It Works, and Why We Need It, I Is an Other: The Secret Life of Metaphor and How It Shapes the Way We See he World, and Geary's Guide to the World's Great Aphorists, among other books. He likes to juggle. Read More Read Less