Just as we were about to see the fruit of millions of years of work, you go and let your planet get blown up!
6 seconds sound clip from The Hitchhiker's Guide to the Galaxy (1981) - Episode 4 sitcom.
You can hear this line at 00:24:40.480 in the Blu-ray version of the TV Series.
Quote context
[...]
- Thank you, Slartibartfast. That will be all!
- Yes, sir. Thank you very much.
- Well... Goodbye, Earthman. Sorry about your planet. Hope the lifestyle comes together.
- I'm sorry, I thought you were proposing a toast.
- Still, the best laid plans of mice...
- And men.
- What?
- And men. The best laid plans of mice and men.
- And what have men got to do with it?
- Listen, we've got to have that question!
- Well, I'm sorry, I can't help you. Shall we be off?
[...]