Well, the teachers at Miss Porter's school thought it was very promising.

3 seconds sound clip from the Holiday (1938) movie soundboard.

You can hear this line at 00:20:56.323 in the Blu-ray version of the movie.

Quote context

[...]

- Frankly, I stank.

- What did you try to do after you discovered you couldn't paint?

- Case, are you drawing me out?

- Sure. Come on.

- You really want to know?

- Sure.

- Well, I tried to go on the stage.

- Oh.

- Would you care to see me do the sleepwalking scene from Macbeth?

- No.

- Out damnedest...

- Some other time.

- Well, the teachers at Miss Porter's school thought it was very promising.

- What else?

- There were a lot of humorous little episodes.

- I tried to get Father to let me take a nursing course at a hospital.

- Oh, yes, and I almost got arrested trying to help some strikers over in Jersey.

- How was I to know that Father was on the board of directors of the company?

[...]