If you hadn't fixed the radio, we wouldn't know about the train.
4 seconds sound clip from the The Bridge on the River Kwai movie soundboard.
You can hear this line at 01:46:52.441 in the Blu-ray version of the movie.
Quote context
[...]
- That would really be a show. Can we get there in time, sir?
- Yai says we're two to three days' march from the Kwai.
- If we set a faster pace, we could make it before sundown on the 12th.
- It's worth having a go for the train, don't you think?
- Good hunting. Good show. Jolly good fun. Jolly, jolly good.
- If you hadn't fixed the radio, we wouldn't know about the train.
- Well, there's always the unexpected, isn't there?
- Quinine.
- Well, we'll complete this later.
- Clipton, we're facing a crisis.
[...]