Harry Potter and the Order of the Phoenix - Pg 162

   Without warning, the scar on his forehead seared with pain again and his stomach churned horribly.   'Cut it out,' he said firmly, rubbing the scar as the pain receded.   'First sign of madness, talking to your own head,' said a sly voice from the empty picture on the wall.   Harry ignored it. He felt older than he had ever felt in his life and it seemed extraordinary to him that barely an hour ago he had been worried about a joke shop and who had got a prefect's badge.