- What was that?
- I think... Oh, nothing. The wind perhaps.

5 seconds sound clip from the Wuthering Heights (1939)) classic radio play.

You can hear this line at 00:21:40 in the radio play.

Quote context

[...]

- Cathy, do you love him?

- Of course. Why? Now, isn't that a silly question?

- Because he's handsome and pleasant to be with.

- Not enough.

- Well, then, because he'll be rich someday! And I'll be the finest lady in the county.

- Oh, Ellen, it would be heaven to escape from here.

- What about Heathcliff?

- You know he gets worse every day.

- It would degrade me to marry him. I wish he'd never come back.

- What was that?

- I think... Oh, nothing. The wind perhaps.

- Well, my darling, if Master Edgar and his beautiful home mean heaven to you, you'd better enter that heaven and take your place among the Linton angels.

- The only thing is, I wonder if I belong in heaven. I dreamed once I was there and I broke my heart with weeping to come back to earth, to the bleak moors. And I awoke, sobbing with joy, on top of Wuthering Heights.

- And so you see, I suppose I've really no more business marrying Edgar Linton than I'd have in heaven. But, oh, what can I do?

- You're thinking of Heathcliff?

- Who else?

[...]