Snape faltered for only a split second at his harsh tone, "They are only doing what they think is best for you," he continued. Harry could hear two tones of voice at war with one another - that of the sneering superior teacher, and that of the man talking to a teenager condemned to death, "The Headmaster is determined that we continue trying to heal you. He would not be so insistent, if he did not believe the effort was worth it,"