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- Potter. - I'm sorry, sir.
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I was just admiring your hourglass.
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Oh, yes.
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A most intriguing object.
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The sand runs in accordance with the quality of the conversation.
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If it is stimulating, the sand runs slowly.
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- If it is not... - I think I'll be going.
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Nonsense. You have nothing to fear, dear boy.
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As to some of your classmates...
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...well, let's just say they're unlikely to make the shelf.
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The shelf, sir?
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Anyone who aspires to be anyone hopes to end up here.