I feel like the protohuman, coming out of the forest primeval and seeing the moon for the first time and throwing rocks at it.

9 seconds sound clip from the Poltergeist (1982) movie soundboard.

You can hear this line at 00:56:18 in the Blu-ray version of the movie.

Quote context

[...]

- I am a professional psychologist who spent most of my time engaged in this ghostly hobby which makes me, I suppose, the most irresponsible woman of my age that I know.

- Would you like a glass for that?

- No, thank you.

- You know, you were very funny. Your hands were shaking about a mile a minute.

- It isn't over. I'm absolutely terrified.

- It's all the things that we don't understand.

- I feel like the protohuman, coming out of the forest primeval and seeing the moon for the first time and throwing rocks at it.

- If I got killed, would I come back as a ghost and get stuck in the house like my sister?

- Your sister isn't dead, Robbie.

- If I got killed, could I visit her and show her how to get back here?

- You could tie a rope around me and hold it tight, then somebody could come and get us and we'd go live somewhere else.

[...]