They'll turn up your driveway, not knowing for sure why they're doing it.
4 seconds sound clip from the Field of Dreams (1989) movie soundboard.
You can hear this line at 01:23:46.327 in the Blu-ray version of the movie.
Quote context
[...]
- All right, all right, all right. This is fascinating, it is.
- I'm sorry, Ray. We got no choice.
- They'll come to Iowa for reasons they can't even fathom.
- They'll turn up your driveway, not knowing for sure why they're doing it.
- They'll arrive at your door as innocent as children, longing for the past.
- Of course, we won't mind if you look around, you'll say. It's only $20 per person.
- And they'll walk out to the bleachers and sit in their shirt sleeves on a perfect afternoon.
[...]