When do we cross the line from 'animal' to 'person?'

[frz]

When you get right down to it, human beings are nothing more than ordinary jungle beasts. Savages. No different from the Cro Magnon people who lived twenty five thousand years ago. No different. Our DNA hasn't changed substantially in a hundred thousand years. We're still operating out of the lower brain. The reptilian brain. Fight or flight. Kill or be killed. We like to think we've evolved and advanced because we can build a computer, fly an airplane, travel underwater, we can write a sonnet, paint a painting, compose an opera. But you know something? We're barely out of the jungle on this planet. Barely out of the fucking jungle. What we are, is semi-civilized beasts, with baseball caps and automatic weapons.

-- George Carlin

That guy said a lot of shit I'm starting to find out. Before that I only knew him from bill and ted movies, "rock on dude".