You know better than that.

2 seconds sound clip from the Invasion of the Body Snatchers (1956) movie soundboard.

You can hear this line at 00:58:36.345 in the Blu-ray version of the movie.

Quote context

[...]

- They're not here. I hope we're not too late.

- Jack! Thank God!

- The whole town's been taken over by the pods.

- Not quite there's still you and Becky.

- Miles, it would have been so much easier if you'd gone to sleep last night.

- Now relax, we're here to help you.

- You know better than that.

- Where do you want us to put them?

- Would you like to watch them grow?

- No, thanks.

- Put them in there.

- There's nothing to be afraid of. We're not going to hurt you.

- Once you understand you'll be grateful.

- Remember how Teddy and I fought against it? We were wrong.

[...]