“Truth and power can travel together only so far. Sooner or later they go their separate paths. If you want power, at some point you will have to spread fictions. If you want to know the truth about the world, at some point you will have to renounce power. You have to admit things—for example, about the sources of your own power—that will anger allies, dishearten followers, or undermine social harmony. “The most powerful scholarly establishments—whether Christian priests, Confucian mandarins, or Communist ideologues—placed unity above truth. That’s why they were so powerful. As a species,
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