I am surprised at how well you handle them. See, I am from Kentucky originally and we owned a few ourselves, so it comes naturally to me.

10 seconds sound clip from the Glory (1989) movie soundboard.

You can hear this line at 01:05:09 in the Blu-ray version of the movie.

Quote context

[...]

- Good. Very good. A pleasure.

- Good night.

- Beg to report, colonel, sir. The troop is fed and bedded down for the night, sir.

- Very good, corporal. Pass the word along to A Company we'll be going into action in the morning.

- Very good, sir.

- Your men march handsomely, colonel. My compliments.

- Thank you, sir.

- I am surprised at how well you handle them. See, I am from Kentucky originally and we owned a few ourselves, so it comes naturally to me.

- You are from Boston, are you not?

- Yes.

- It is impossible to imagine Boston with slaves.

- Halt. Shoulder arms!

- Town's clean, sir. Ain't no Rebs here, just some women.

- Well, all right. You hear that, boys? Let's clear her out!

[...]