"Greed is good"

In "The United States of Gordon Gekkos" I wrote about greed--not just on Wall Street, but on the metaphorical Main Street too. Without greed, for all purposes, we can't have the economic system we have. Can't live with it, and can't live without it!
Warren Buffett says that now is the right time to be greedy again:

Be fearful when others are greedy, and be greedy when others are fearful. And most certainly, fear is now widespread, gripping even seasoned investors. To be sure, investors are right to be wary of highly leveraged entities or businesses in weak competitive positions. But fears regarding the long-term prosperity of the nation’s many sound companies make no sense. These businesses will indeed suffer earnings hiccups, as they always have. But most major companies will be setting new profit records 5, 10 and 20 years from now.