Did Emily Brontë say “Whatever our souls are made of, his and mine are the same”?

Did Emily Brontë say “Whatever our souls are made of, his and mine are the same”?

Found word for word. Yes. The text appears in works attributed to Emily Brontë. Source and location below.

… degrade me to marry Heathcliff now; so he shall never know how I love him: and that, not because he's handsome, Nelly, but because he's more myself than I am. Whatever our souls are made of, his and mine are the same; and Linton's is as different as a moonbeam from lightning, or frost from fire.'
Wuthering Heights — Emily Bronte, CHAPTER IX · ¶439 · Public domain (US), Project Gutenberg #768 · source

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