When I think what could have happened to him the night he ran away from home! If the Knight Bus hadn’t picked him up, I’m prepared to bet he would have been dead before the Ministry found him.
Black is mad. He’s a danger to anyone who crosses him, magic or Muggle.
“Knocking the stuffing out of me won’t make Aunt Marge forget what I could tell her,” he said grimly.
Extremely unusual though he was, at that moment Harry Potter felt just like everyone else: glad, for the first time in his life, that it was his birthday.