Because you'll never be a first-class human being or a first-class woman until you've learned to have some regard for human frailty.

C.K. Dexter Haven (Cary Grant)

8 seconds sound clip from the The Philadelphia Story movie soundboard.

You can hear this line at 00:47:21 in the Blu-ray version of the movie.

Quote context

[...]

- We're very vain, you know. 'This citadel can and shall be taken, and I'm the boy to do it.'

- You seem quite contemptuous of me all of a sudden.

- No, Red, not of you. Never of you.

- Red, you could be the finest woman on this earth.

- I'm contemptuous of something inside of you you either can't help or make no attempt to. Your so-called strength, your prejudice against weakness, your blank intolerance.

- Is that all?

- That's the gist of it.

- Because you'll never be a first-class human being or a first-class woman until you've learned to have some regard for human frailty.

- It's a pity your own foot can't slip a little sometime. But your sense of inner divinity wouldn't allow that.

- This goddess must and shall remain intact.

- There are more of you than people realize. A special class of the American female: the married maidens.

- So help me, if you say another word, I'll...

- I'm through. For the moment I've had my say.

[...]