- You can't indefinitely go on caring for somebody who doesn't care for you, can you?
- Well, it's been done.

— David Graham (James Stewart)

8 seconds sound clip from the After the Thin Man (1936) movie soundboard.

You can hear this line at 00:25:02 in the DVD version of the movie.

Quote context

[...]

- Look what I found. Iced and everything.

- Don't you stay here, David. You go out and have some fun.

- Don't be silly. We can have fun right here.

- What's the matter with me anyway? Why haven't I any pride?

- What can't I face it? Robert doesn't give a hang about me.

- You can't indefinitely go on caring for somebody who doesn't care for you, can you?

- Well, it's been done.

- Oh, David, I'm so sorry. I've been such a fool. You really ought to hate me for what I've done to you.

- No, now, don't talk like that.

- You get the glasses, and I'll try to open this thing.

- No! We're going out. This is a new year, the time for resolutions.

[...]