Harry Potter and the Chamber of Secrets
"What've we got this afternoon?" said Harry [...]
"Defense Against the Dark Arts," said Hermione at once.
"Why," demanded Ron, seizing her schedule, "have you outlined all Lockhart's lessons in little hearts?" (6.77-79)
Ginny Weasley, who sat next to Colin Creevey in Charms, was distraught, but Harry felt that Fred and George were going the wrong way about cheering her up. They were taking turns covering themselves with fur or boils and jumping out at her from behind statues. They only stopped when Percy, apoplectic with rage, told them he was going to write to Mrs. Weasley and tell her Ginny was having nightmares. (11.24)
"I must ask you, Harry, whether there is anything you'd like to tell me," he said gently. "Anything at all."
Harry didn't know what to say. He thought of Malfoy shouting, "You'll be next, Mudbloods!" and of the Polyjuice Potion simmering away in Moaning Myrtle's bathroom. Then he thought of the disembodied voice he heard twice and remembered what Ron had said: "Hearing voices no one else can hear isn't a good sign, even in the Wizarding world." He thought, too, about what everyone was saying about him, and his growing dread that he was somehow connected with Salazar Slytherin...
"No," said Harry. "There isn't anything, Professor..." (12.36-38)