Oh, I know, I realize, but... if certain British doctors never asked, What is this fungus?... we wouldn't today have penicillin. Correct?

12 seconds sound clip from the The Exorcist movie soundboard.

You can hear this line at 01:16:49 in the Blu-ray version of the movie.

Quote context

[...]

- That's cute.

- Your daughter, she's the artist?

- Thank you. -You're welcome.

- Incidentally, um... you might ask your daughter if she... remembers seeing Mr. Dennings in her room that night.

- Look, he wouldn't have any reason in the world to go up to her room.

- Oh, I know, I realize, but... if certain British doctors never asked, What is this fungus?... we wouldn't today have penicillin. Correct?

- Well, when she's better, I'll ask her.

- Yeah, couldn't hurt. -Okay.

- In the meantime...

- That's okay.

[...]