Can't stay long, Mother," he said. "I'm up front, the prefects have got two compartments to themselves-""Oh, are you a prefect, Percy?" said one of the twins, with an air of great surprise. "You should have said something, we had no idea.""Hang on, I think I remember him saying something about it," said the other twin. "Once-""Or twice-""A minute-""All summer-""Oh, shut up," said Percy the Prefect.
I feel I owe you another explanation Harry," said Dumbledore hesitantly. "You may, perhaps, wondered why I never chose you as a prefect? I must confess...that I rather thought...you had enough responsibility to be going on with."Harry looked up at him and saw a tear trickling down Dumbledore's face into his long silver beard.