is a selfish desire for more than one needs or deserves. can make honest men murderers. It has made countries with rich valuable resources into the poorest countries in the world. We are taught it is bad and not to practice it. But consider a world without , where everyone is as sharing as Mother Theresa was. The progress of humankind would be at a standstill. has given our society faster travel, better service, more convenience, and most importantly, progress. has created thousands of billionaires and millions of millionaires. But why is ....