Traders at work on the Chicago Mercantile Exchange. "Mankind's oldest stories tell us that greed is always Janus-faced," Sedlacek says. "It is an engine of progress, but it's also the cause of our collapse. Being constantly dissatisfied and always wanting more seems to be an innate natural phenomenon, forming the heart of our civilization. The original sin of the first human couple in the Garden of Eden was the result of greed."