"As long as people act within a framework of voluntary, mutually consensual interactions, they can only achieve their own selfish desires by satisfying the selfish desires of others. While people act out of self-interest, through the free market system they help others. The free market is therefore the only known system of economic organization that is both fully compatible with human nature, and at the same time altruistic." http://www.libertarianprepper.com/free-markets-and-their-inherent-altruism/