It's a little hard to analyze this episode. Each character has a lesson that they have learned, so here are the lessons for your reading pleasure. I also made a series of wallpaper with these lessons on them, found at roses-thorns.com. Enjoy!
Lesson One: (Jet) "Humans were meant to work and sweat to make a living. Those who try to get rich quick or live at the expense of others all get divine retribution somewhere along the line. That is the lesson."
Lesson Two: (Faye) "Survival of the fittest is the law of nature. We deceive or we are deceived. Thus, we flourish or we perish. Nothing good ever happened to me when I trusted others. That is the lesson."
Lesson Three: (Ed) "Lesson! Lesson! If you see a stranger, follow him!"
Lesson Four: (Spike) "Don't leave stuff in the fridge."