Most people just don't really believe it. They think it's a parlor trick, a gag. But it's no gag, ladies and gentlemen.
8 seconds sound clip from the Congo (1995) movie soundboard.
You can hear this line at 00:12:41.077 in the Blu-ray version of the movie.
Quote context
[...]
- Professor Arliss Wender at MIT, the first scientist to apply this technology to sign language.
- Our subject today, William, was born without the organs of speech. Isn't that right, William?
- This is the first time I have ever heard my own voice.
- It's hard to get grants for what I do.
- Amy, could you come down here, please?
- Hello, Amy. Thank you for the flowers.
[...]