Look, why don't you go talk to Ron about all this?" Harry asked. "Well, I would, but he's always asleep when I go and see him!" said Lavender fretfully. "Is he?" said Harry, surprised, for he had found Ron perfectly alert every time he had been up to the hospital wing.
J. K. RowlingDo 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