Six Feet Under, Season 4

Russell:
[watching a documentary about cave paintings] That's where everything started. In those cave paintings there was the creation of the idea of image, of the representation of ourselves.

Claire:
Exactly. That's when we stopped living inside nature and started living inside our heads.

Anita:
Yeah, just while we can just sit back and watch while greedy corporate Bush suckers destroy nature, since we're no longer a part of it.

Russell:
If you take humans out of nature, then all there are left with is human nature.

Claire:
Okay, that sounds really good, but what the f*** does that mean?