When the mainsail's set and the anchor's weighed, there's no turning back from any course that's laid.
7 seconds sound clip from the Muppet Treasure Island movie soundboard.
You can hear this line at 00:03:20.984 in the Blu-ray version of the movie.
Quote context
[...]
- Hulla wacka, ulla wacka, something not right. Many wicked icky things gonna happen tonight.
- Hulla wacka, moolah wacka, sailor man beware.
- When de money in de ground dere's murder in de air.
- And when greed and villainy sail the sea, you can bet your boots there'll be treachery.
- Shiver my timbers, shiver my sails. Dead men tell no tales.
- Oh, aye. Fifteen men went ashore that day, and only Flint, his own self, returned.
[...]