I think everything must be all right, or we will have heard from them.
8 seconds sound clip from the Bon Voyage, Charlie Brown movie soundboard.
You can hear this line at 00:45:24 in the Blu-ray version of the movie.
Quote context
[...]
- And this whole place is giving me the creeps.
- We'll have to deal with the chateau later. Come on.
- I hope it all works out soon.
- Gee, I sure hope Chuck and Linus are okay.
- I think everything must be all right, or we will have heard from them.
- If they do not show up at school, then we must go to the chateau to be sure they're okay.
- Hey, Marcie, this is hard work.
- Ask Pierre when we eat and ask hime what we're gonna have.
[...]