- But I'm sorry...
- Never apologize, mister. It's a sign of weakness.

— Captain Nathan Brittles (John Wayne)

4 seconds sound clip from the She Wore a Yellow Ribbon movie soundboard.

You can hear this line at 00:11:09.136 in the Blu-ray version of the movie.

Quote context

[...]

- Wipe that grin off your face.

- You have the floor.

- Sir, I have denied Mr. Pennell permission to leave the post.

- And for what purpose did you wish to leave the post?

- Picnicking, sir.

- Picnicking? Picnicking? Where, in St. Louis?

- Oh, no, sir, just out by the waterfall.

- But I'm sorry...

- Never apologize, mister. It's a sign of weakness.

- I see no reason why Mr. Pennell should not go picnicking.

- Very good, sir.

- Thank you, Captain Brittles.

- But Mr. Cohill was quite right in denying you permission to leave the post under the present emergency.

[...]