Excerpts from Warren Buffett's annual letter

Billionaire investor Warren Buffett released his annual letter to Berkshire Hathaway Inc. shareholders Saturday. Berkshire's chairman and CEO explained how the purchase of the Burlington Northern Santa Fe railroad contributed to a big jump in income at the Omaha-based company. Buffett also offered advice on several key business principles for investors.

Here's are excerpts of what Buffett had to say:

AMERICA'S FUTURE

"Money will always flow toward opportunity, and there is an abundance of that in America," Buffett wrote. "Commentators today often talk of 'great uncertainty.' But think back, for example, to December 6, 1941, October 18, 1987 and September 10, 2001. No matter how serene today may be, tomorrow is always uncertain.

"Don't let that reality spook you. Throughout my lifetime, politicians and pundits have constantly moaned about terrifying problems facing America. Yet our citizens now live an astonishing six times better than when I was born.

"The prophets of doom have overlooked the all-important factor that is certain: Human potential is far from exhausted, and the American system for unleashing that potential -- a system that has worked wonders for over two centuries despite frequent interruptions for recessions and even a Civil War -- remains alive and effective.

"We are not natively smarter than we were when our country was founded nor do we work harder. But look around you and see a world beyond the dreams of any colonial citizen. Now, as in 1776, 1861, 1932 and 1941, America's best days lie ahead."

that's true not just for the us market but some other world markets
as well i think