Because I know him. I'm his doctor. You must be ready for him. If you don't, it's your funeral.

— Dr. Sam Loomis (Donald Pleasence)

11 seconds sound clip from the Halloween (1978) movie soundboard.

You can hear this line at 00:19:12 in the Blu-ray version of the movie.

Quote context

[...]

- Leave me alone. (2)

- He doesn't believe us. Don't you know what happens on Halloween?

- Yeah, we get candy.

- The boogeyman, ooh, the boogeyman. The boogeyman, the boogeyman, the boogeyman. The boogeyman.

(MAN BREATHING HEAVILY)

- He's on his way. You've gotta believe me, officer. He is coming to Haddonfield.

- Because I know him. I'm his doctor. You must be ready for him. If you don't, it's your funeral.

- We're from Haddonfield, couldn't be prouder. Can't hear us now, we'll yell a little louder.

- Look at you. Look all the books you have. You need a shopping cart to get home.

- Yeah, not funny.

- You know, it's totally insane. We have three new cheers to learn in the morning

[...]