Depression and cosmology? Proof again that all human life is in Annie Hall:
Doctor in Brooklyn: Why are you depressed, Alvy?
Alvy's Mom: Tell Dr. Flicker.
[Young Alvy sits, his head down - his mother answers for him]
Alvy's Mom: It's something he read.
Doctor in Brooklyn: Something he read, huh?
Alvy at 9: [his head still down] The universe is expanding.
Doctor in Brooklyn: The universe is expanding?
Alvy at 9: Well, the universe is everything, and if it's expanding, someday it will break apart and that would be the end of everything!
Alvy's Mom: What is that your business?
[she turns back to the doctor]
Alvy's Mom: He stopped doing his homework!
Alvy at 9: What's the point?
Alvy's Mom: What has the universe got to do with it? You're here in Brooklyn! Brooklyn is not expanding!
Doctor in Brooklyn: It won't be expanding for billions of years yet, Alvy. And we've gotta try to enjoy ourselves while we're here!