- Like a spear that comes out of your chest.
- Um, sure.

8 seconds sound clip from the Donnie Darko movie soundboard.

You can hear this line at 01:12:50 in the Blu-ray version of the movie.

Quote context

[...]

- She's gotta be in here somewhere. She never leaves this house.

- Well, maybe she's asleep.

- Donnie, look.

- Send her a letter.

- Each vessel travels along a vector through space-time, along its center of gravity.

- Like a spear.

- I beg your pardon?

- Like a spear that comes out of your chest.

- Um, sure.

- And in order for the vessel to travel through time it's got to find a portal, or in this case a wormhole...

- Well, could these portals... Could these portals just appear anywhere, anytime?

- I think that's highly unlikely. No, I think what you're talking about is, um, an act of God.

- If God controls time, then all time is pre-decided.

[...]