Where does wisdom begin? The question lingers in the background of new books by John Lewis Gaddis and Perry Anderson, two men who have spent their lives writing and thinking about power in different ways. Gaddis came onto the scene in the 1960s, disrupting the field of U.S. foreign relations by marrying diplomatic history with strategic studies. His post-revisionist synthesis, articulated in the 1980s, provoked a flurry of criticism but uprooted the consensus that economics determined U.S. foreign policy. The best way to comprehend power, he argued, was to see the world through the eyes of powerful people. Anderson also entered academe in the 1960s, challenging the British Left with insights from European theorists like Antonio Gramsci, Theodor Adorno, Herbert Marcuse, and Louis Althusser. Like Gaddis, he earned opprobrium, tangling with historian A.J.P. Taylor, among others, and successfully changed the way his colleagues understood the relationship between class, culture, and the state. The study of power, Anderson asserted, had to be entangled with the study of empire. Although Gaddis and Anderson have worked in separate intellectual milieus for most of their careers, in recent years Gaddis has ventured into the history of knowledge, and Anderson has turned to U.S. policymaking. Their latest books, On Grand Strategy and The H-Word, converge on the same argument: To understand a thing, you have name it correctly. Wisdom begins with a name.