No, Mary, just common clay.
6 seconds sound clip from the Dark Command (1940) movie soundboard.
You can hear this line at 00:42:31 in the Blu-ray version of the movie.
Quote context
[...]
- I can't. When I took this job, it got under my skin. I took an oath...
- Bob, Bob, please. Please, I'll do anything for you.
- I want you for my wife more than anything else in the world, but not as a bribe for your brother.
- I thought they bred men of flesh and blood in Texas. I was wrong. You're made of granite.
- So, Seton promises I'll get a fair trial, does he?
- Don't lose heart. You'll be a free man soon.
- Oh, don't raise our hopes unless you can do something.
- I promise you more than your friend, the marshal, if you leave this in my hands.
[...]