It wasn't Cathy herself, but her love. Cathy's love... stronger than time, sobbing for its unlived days.
14 seconds sound clip from the Wuthering Heights (1939)) classic radio play.
You can hear this line at 00:52:58 in the radio play.
Quote context
[...]
- I can't live without my life! I can't live without my soul!
- And though that was twenty years ago, I can still hear and see that wild hour.
- Poor Heathcliff holding the dead body of his beloved...
- Crying out to Cathy's soul to haunt and torment him till he died.
- Doctor Kenneth. Open the door.
- Doctor Kenneth, what's the matter?
- I was just crossing the moor on my way home...
- Yes. I saw him from my carriage. He was wandering through the snow with a woman.
- A young woman, she seemed as mad as himself.
[...]