“You know,” said Phineas Nigellus, even more loudly than Harry, “this is precisely why I loathed being a teacher! Young people are so infernally convinced that they are absolutely right about everything. Has it not occurred to you, my poor puffed-up popinjay, that there might be an excellent reason why the headmaster of Hogwarts is not confiding every tiny detail of his plans to you? Have you never paused, while feeling hard-done-by, to note that following Dumbledore’s orders has never yet led you into harm? No. No, like all young people, you are quite sure that you alone feel and think, you
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