I'm sorry, my dear. We English are a very pigheaded lot.
5 seconds sound clip from the Beat the Devil (1953) movie soundboard.
You can hear this line at 01:01:21 in the Blu-ray version of the movie.
Quote context
[...]
- Tell stories and ruin everything?
- Harry, I'm asking you not to do this.
- Then there will be no trouble for you, no trouble for us, no risk when we get to Africa!
- I'm sorry, my dear. We English are a very pigheaded lot.
- You think you can get away with this?
- But, Maria, my dear, good Maria, listen...
- First you make love to me. Now you tell me you will ruin me.
- You'll forgive me, but it was you who made...
- Oh, shut your trap! Go on! Do what you like!
[...]