- I'm sorry, Professor. I didn't mean to disturb you.
- No, not at all. Forgive me if I don't rise.
- Yes, certainly. Excuse me.

6 seconds sound clip from the Fiend Without a Face (1958) movie soundboard.

You can hear this line at 00:35:07.743 in the Blu-ray version of the movie.

Quote context

[...]

- The major and I were just having a quiet talk. I got dizzy.

- Well, your quiet little talk is over, Major.

- First Howard Gibbons, now the professor.

- Do you have to go around making trouble?

- You really believe that, don't you?

- I can believe my eyes.

- I'm sorry, Professor. I didn't mean to disturb you.

- No, not at all. Forgive me if I don't rise.

- Yes, certainly. Excuse me.

- It's me! It's Frank!

- Have you finished searching the quarry yet?

- Yeah, and the men are tired. They want to go home.

- But they can't quit now! We've almost reached the air base.

- Well, you better tell 'em. They won't listen to me.

- Okay, fellas, you spread out again. We'll join up at the Adams' fence.

[...]