Criminal Minds, Season 4

[after the lecture]

Rossi:
You do know that we actually want them to join the Bureau?

Reid:
What? Yeah.

Rossi:
We want these kids to think it's a cool place to work.

Reid:
I understand that...

Rossi:
[referring to Reid's existentialist joke] Existentialism?

Reid:
Existentialism is known as...

Female Student:
Hey? Reid.

Reid:
[absent-mindedly] Hi. [continues speaking to Rossi] That was a funny joke, what do you mean?

Rossi:
Yeah, to Sigmund Freud.

Reid:
I tell them they shouldn't send me here and they keep sending me here, I don't know why.

Rossi:
Because you're young.

Reid:
"Young" or "Jung"?

Prof Rothchild:
[butts in] Dr Reid, wouldn't they sit in the dark and hope that the bulb decided to light again?

Reid:
Excuse me?

Prof Rothchild:
An existentialist would never change the bulb, he would allow the darkness to exist.

Reid:
[realizes] Yeah, that's pretty good.