Fear is in the negative energy spectrum. And love is in the positive energy spectrum.

9 seconds sound clip from the Donnie Darko movie soundboard.

You can hear this line at 00:46:33 in the Blu-ray version of the movie.

Quote context

[...]

- I have had a cunning vision. This vision has released me.

- It's important that our lifeline be rejuvenated so that we can breathe again. It's time to breathe.

- It is time to breathe.

- Thank you, Jim Cunningham!

- Thank you, Jim Cunningham.

- So, now let us begin lifeline exercise number one. Please press stop now.

- As you can see, the lifeline is divided into two polar extremes. Fear and love.

- Fear is in the negative energy spectrum. And love is in the positive energy spectrum.

- No duh.

- Excuse me?

- No duh is a product of fear.

- Now, on each card is a character dilemma which applies to the lifeline.

- Please, take this! Thank you.

- Please read each character dilemma aloud and place an X on the lifeline in the appropriate place.

[...]