Fear and love are the deepest of human emotions.

5 seconds sound clip from the Donnie Darko movie soundboard.

You can hear this line at 00:48:24 in the Blu-ray version of the movie.

Quote context

[...]

- No. I mean, I know what to do. I just I don't get this.

- You can't lump things into two categories. Things aren't that simple.

- The lifeline is divided that way.

- Well, life isn't that simple.

- I mean, who cares if Ling Ling returns the wallet and keeps the money? It has nothing to do with either fear or love.

- Fear and love are the deepest of human emotions.

- Okay. But you're not listening to me. There are other things that need to be taken into account here, like, the whole spectrum of human emotion.

- You can't just lump everything into these two categories and then just deny everything else.

- If you don't complete the assignment, you'll get a zero for the day.

- Donald, let me preface this by saying that your Iowa test scores are intimidating.

[...]