Well it seems Warren Buffett has put his words into practice: "Be fearful when others are greedy and be greedy when others are fearful."

From the article:

"I like buying on sale," said Buffett, whose Berkshire Hathaway Inc. made its biggest bets on the stock market of this year on Aug. 8 as the Standard & Poor's 500 Index plunged the most since December 2008. "Last Monday, we spent more money in the stock market buying than any day this year," Buffett, Berkshire's chief executive officer and head of investments, said in a television interview with Charlie Rose on PBS.