In a recent Morgenthau Festschrift, John Herz recalled how Morgenthau began his presentation on the given theme "Political Realism Revisited" at the ISA 1980 annual conference by remarking with his usually wit: "Revisited? I never left it."¹ Morgenthau, of course, was right. For he did never leave realism, as he developed and understood it; he did never compromise on its main analytical and normative claims and did never abandon its main concepts and concerns. Recognizing its centrality, Morgenthau never left the concept of human nature in his attempts to understand the social reality of the human condition and the political reality of international relations. It seems not merely coincidental that the essays on the derivation of the political from the nature of Man and on the roots of narcissism—two important pieces that are concerned with the nature of Man as it is intertwined with, or better, as it helps to create, the social dilemmas of the human condition—are one of Morgenthau's earliest and one of his very last works.² Yet, when Morgenthau died, the unfortunate happened: genuine realism died; what had informed, defined, and shaped realism for millennia, the genuine and profound concern with Man died.