No small themes for William McNeill, a writer of big, sweeping books, from The Rise of the West and Plagues and Peoples to the modestly titled--and wonderful--History of the World. Here McNeill turns his attention to the role of synchronized movement in human societies, whether in mass political rallies, the muscular bonding of military drills, or dances staged in ballrooms or mosh pits. Such motions, McNeill tells us, are "far older than language, and critically important in human history." Ranging from the Paleolithic to modern times, McNeill turns up unusual nuggets from the past: the Christian Church's abandonment of sacred dances in the 4th century, dances that survive now in the sign of the cross; and Adolf Hitler borrowing fight songs from American universities to solidify the nascent National Socialist movement.