I read this "Thought for the Week" in today's Weekly Edrah (which is a neat website) and thought it was interesting in view of our Wednesday night study of Gen. 14.
There are four types of people. The one who says, "What's mine is mine and what's yours is yours." This is the normal type of person, but some say this is the type of person who lived in Sodom. The one who says, "What's mine is yours and what's yours is mine." This type of person is an ignoramus. The one who says, "What's mine is yours and what's yours is yours." This is a righteous person. The one who says, "What's mine is mine and what's yours is mine." This is a wicked person. (m.Avot 5:10)