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Pope John XXII, of course, had read “Feed my sheep” very differently. Like Boniface, he saw it as enshrining papal authority over the sheep of secular society, including its secular rulers. So William of Ockham proceeded to take his famous razor to Boniface’s arguments. The pope had no such plenitude of power, Ockham replied; the faithful are neither sheep nor slaves. Nor are there two swords, as Boniface had claimed. There is only one, the one that kings and magistrates use to govern and protect their subjects. In fact, Christ had specifically forbidden his apostles from exercising the same kind of authority over the faithful that kings exercised over subjects (Matthew 20:25–27).20 By claiming broad authority, as Boniface had done, popes had in effect turned their office into an illegitimate enterprise.
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Arthur Herman (The Cave and the Light: Plato Versus Aristotle, and the Struggle for the Soul of Western Civilization)