Summer

“Harry — I think I've just understood something! I've got to go to the library!”
And she sprinted away, up the stairs.
“What does she understand?” said Harry distractedly, still looking around, trying to tell where the voice had come from.
“Loads more than I do,” said Ron, shaking his head.
“But why’s she got to go to the library?”
“Because that’s what Hermione does,” said Ron, shrugging. “When in doubt, go to the library.”
― J.K. Rowling, Harry Potter and the Chamber of Secrets

“Whether you come back by page or by the big screen, Hogwarts will always be there to welcome you home.”
― J.K. Rowling

“Everybody finished the song at different times. At last, only the Weasley twins were left singing along to a very slow funeral march.”
― J. K. Rowling, Harry Potter and the Sorcerer's Stone

“Do you mean ter tell me," he growled at the Dursleys, "that this boy—this boy!—knows nothin' abou'—about ANYTHING?"
Harry thought this was going a bit far. He had been to school, after all, and his marks weren't bad.
"I know some things," he said. "I can, you know, do math and stuff.”
― J.K. Rowling, Harry Potter and the Sorcerer's Stone