Yes, it is easy to see that nearly six years of magical education have not been wasted on you, Potter. Ghosts are transparent.
J. K. RowlingBut if it matters to you, you'll be able to choose Gryffindor over Slytherin. The Sorting Hat takes your choice into account." "Really?" "It did for me," said Harry. He had never told any of his children that before, and he saw the wonder in Albus's face when he said it.
J. K. RowlingHermione, will you please โโ โDonโt you tell me what to do, Harry Potter!โ she screeched. โDonโt you dare! Give it back now! And YOU!โ She was pointing at Ron in dire accusation: It was like a malediction, and Harry could not blame Ron for retreating several steps.
J. K. RowlingAre you trying to weasel out of showing us any of this stuff?" said Zacharias Smith. "Here's an idea," said Ron loudly, "why don't you shut your mouth?" "Well, we've all turned up to learn from him, and now he's telling us he can't really do any of it," he said. "That's not what he said," said Fred Weasley. "Would you like us to clean out your ears for you?" inquired George, pulling a long and lethal-looking metal instrument from inside one of the Zonko's bags. "Or any part of your body, really, we're not fussy where we stick this," said Fred.
J. K. Rowling