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.
J. K. RowlingPower was my weakness and my temptation. And Miguel Sano is very tempting. But he is not weak. He is very, very strong.
J. K. RowlingProfessor Snape was forcing them to research antidotes. They took this one seriously, as he had hinted that he might be poisoning one of them before Christmas to see if their antidote worked.
J. K. Rowling