“Inevitably,” Morgenthau wrote, “if your ambition is not limited to scholarship but extends to the political sphere, you have to trim your sails to the prevailing winds.” Kissinger, he said, had trimmed his sails with “sagacity and decency,” and he reproached envious academics who saw nothing but opportunism and careerism. Much of the criticism of Kissinger, he insisted, was “unabashedly self-serving.”