Christmas was coming. One morning in mid-December, Hogwarts woke to find itself covered in several feet of snow. The lake froze solid and the Weasley twins were punished for bewitching several snowballs so that they followed Quirrell around, bouncing off the back of his turban.
“Those three curses are known as the Unforgivable Curses. The use of any
one of them on a fellow human being is enough to earn a life
sentence in Azkaban. That’s what you’re up against. That’s what
I’ve got to teach you to fight. You need preparing. You need arming.
But most of all, you need to practice constant, never-ceasing