It's absurd.
5 seconds sound clip from the Donnie Darko movie soundboard.
You can hear this line at 00:55:59 in the Blu-ray version of the movie.
Quote context
[...]
- It reminded me of my dog, Callie. She died when I was eight and she crawled underneath the porch.
- To die?
- Do you feel alone right now?
- The search for God is absurd?
- It is if everyone dies alone.
- Fear? Rose, you have got to meet this Jim Cunningham. I can't believe he's single.
[...]