Potter: professor,can I ask you something?

Lupin: You want to know why I stopped you facing that boggart变形怪, yes? I thought it’d be obvious. I assumed it wouldtake the shape of lord voldemort伏地魔.

Potter: I did think of voldemort at first. But then I remembered that night on the train, and dementor摄魂怪.

Lupin: I’m very impressed. That suggests what you fear the most is fear itself. This is verywise.

Potte: Before I fainted, I heard something. A woman, screaming.

Lupin: Dementors force us to relive our worst memories. Our pain becomes their power.

Potter: I think itwas my mother. That night she was murdered.

Lupin: The very first time I saw you, Harry. I recognized you immediately. Not by you scar, by your eys. They are your mother, lily’s. Yes,oh yes, I knew her.