I may not be this and I may not be that, but you don't catch me pretending to be what I'm not.

— Sir William Porterhouse (Charles Laughton)

5 seconds sound clip from the The Old Dark House (1932) movie soundboard.

You can hear this line at 00:28:35.631 in the DVD version of the movie.

Quote context

[...]

- Well, Lucy worries about it. Gets it into her head that she's gonna hold me back. Well, you may not believe it, but I know that's what killed her.

- That's what started me making money. I swore I'd smash those fellows and their wives that wouldn't give my Lucy a kind word. Ha, and I have smashed 'em. I'd raced most of 'em.

- Once you've started making money, it's hard to stop, especially if you're like me, there isn't much else you're good at.

- But, what Gladys here has to be superior about, I don't know, Miss DuCane. Why don't you tell 'em your real name?

- My real name is Perkins.

- And, a very nice name, too.

- I may not be this and I may not be that, but you don't catch me pretending to be what I'm not.

- I think I'm finding you a little bit offensive.

- That's all right, Mr. Penderel, I can take care of myself. Least if I can't by now, I never will be able to.

- I wasn't trying to put anything across you, Bill.

- I don't pretend to be what I'm not either. I'm not as dumb as that.

[...]