- Astronomy is a very exact science.
- Maybe so, but when they start telling me doomsday is just around the corner, we part company.

7 seconds sound clip from the When Worlds Collide (1951) movie soundboard.

You can hear this line at 00:10:46.894 in the Blu-ray version of the movie.

Quote context

[...]

- They'll want to see you right away.

- You smoke?

- Yeah, thanks. I'll try one.

- Have a South African one.

- You part of this deal, Doctor? This stargazing?

- No. No, I confine my gazing to the eye, ear, nose, and throat. I'm an M.D.

- I gather you're not an astronomer, either.

- Me? No, I'm just a high-priced messenger boy who's beginning to have doubts about the sanity of astronomers. They ought to stick to making wrong predictions about the weather.

- Astronomy is a very exact science.

- Maybe so, but when they start telling me doomsday is just around the corner, we part company.

- Who's been telling you that?

- Mr. Randall? Come right this way.

- Hello, Tony. Come along, if you want to.

- Please.

- One second.

- Please, I have people waiting.

[...]