Desire is the fuel of life

...
Jesse: ...and I just feel like I'm...
designed to be slightly dissatisfied with everything...
You know, I mean, like...
always trying to better my situation.
You know, I satisfy one desire, and it just...
agitates another, you know?
Then I think:to hell with everything, right?

I mean, desire is the fuel of life.
I mean, do you think it's true that if...
if we never wanted anything, we'd never be unhappy?

Celine: I don't know...

Jesse: Not wanting anything,isn't that...

Celine: a symptom of depression?
Jesse: Yeah, that is, right?
I mean, it's healthy to desire, right?
...
  ----------Before Sunset