Warren Buffett's Worries Extend Beyond His Company to Nuclear War and Pandemics.

Warren Buffett, the billionaire investor, says he worries more about catastrophic global events like another pandemic or nuclear war than the success of his own company, Berkshire Hathaway. He believes that he can't do anything about such events, but he can always change something about his company. Buffett's friends, including Bill Gates, partly credit his success to his optimism and self-confidence. The billionaire also said that his general optimism and lack of concern about the company also stemmed from confidence in his own ability to identify risks and trends in the economy before others.