He prays on his knees, but curses like a stable boy.
6 seconds sound clip from the Patton (1970) movie soundboard.
You can hear this line at 00:40:42 in the Blu-ray version of the movie.
Quote context
[...]
- Very well. What do you have for me?
- You're not telling me anything about the man.
- He writes poetry and believes in reincarnation.
- He's one of the richest officers in the American Army.
- He prays on his knees, but curses like a stable boy.
- He has one standing order. Always take the offensive, never dig in.
- I will attack and annihilate him! Before he does the same to me.
[...]