- He's only a boy.
- He's old enough to carry a gun and use it.

7 seconds sound clip from the Dark Command (1940) movie soundboard.

You can hear this line at 00:40:46 in the Blu-ray version of the movie.

Quote context

[...]

- I have the right to have my son released on bail. Set the amount as high as you like. I'll post it in cash right now.

- I'm sorry, but I just can't do it.

- You bought a horse today from Martin Claussen. The fastest horse he owns.

- Well, that horse could take a man across the border and into safety.

- Would that be so awful?

- He's only a boy.

- He's old enough to carry a gun and use it.

- He'll have to stay in my custody.

- You'll sit there and calmly sentence my boy to death. You cannot do it.

- But he'll be safe. He'll get a fair trial.

- I want you to release my boy on bail!

[...]