28 days, 6 hours, 42 minutes, 12 seconds. That's when the world... will end.

[Donnie tries to kiss Gretchen and she pulls away]
Gretchen: Donnie wait...
Donnie: I like you a lot...
Gretchen: I just want it to be... at a time when... it...
Donnie: When what?
Gretchen: When it reminds me just...
Donnie: When it reminds you of how beautiful the world can be?

They made me do it

Gretchen

Some people are just born with tragedy in their blood.

Donnie Darko? What the hell kind of name is that? It's like some sort of superhero or something

Gretchen: You're weird.
Donnie: Sorry.
Gretchen: No, that was a compliment.