Dear Mr. Potter, We are pleased to inform you... that you have been accepted at Hogwarts School of Witchcraft and Wizardry.
8 seconds sound clip from the Harry Potter and the Sorcerer's Stone movie soundboard.
You can hear this line at 00:17:15 in the Blu-ray version of the movie.
Quote context
[...]
- Blimey, Harry, didn't you ever wonder where your mum and dad learned it all?
- A wizard. And a thumping good one, I'd wager, once you're trained up little.
- No, you've made a mistake. I mean... l can't be a wizard. I mean, I'm just Harry. Just Harry.
- He will not be going there! We swore when we took him in we'd put a stop to all this rubbish.
- You knew? You knew all along and you never told me?
- Of course we knew. How could you not be?
- My perfect sister being who she was. My mother and father were so proud the day she got her letter.
[...]