We say we are trying to buy into businesses with excellent economics, run by honest and able people at a decent price. We buy very few securities, so we look at it as "focused" investing.

I have pledged - to you, the rating agencies and myself - to always run Berkshire with more than ample cash. We never want to count on the kindness of strangers in order to meet tomorrow's obligations. When forced to choose, I will not trade even a night's sleep for the chance of extra profits.

Returns decrease as motion increases.

Paradoxically, when 'dumb' money acknowledges its limitations, it ceases to be dumb.

Our investments continue to be few in number and simple in concept: The truly big investment idea can usually be explained in a short paragraph. We like a business with enduring competitive advantages that is run by able and owner-oriented people. When these attributes exist, and when we can make purchases at sensible prices, it is hard to go wrong (a challenge we periodically manage to overcome).

It's got to be the best intellectual exercise out there. You're seeing through new situations every ten minutes. In the stock market you don't base your decisions on what the market is doing, but on what you think is rational. Bridge is about weighing gain/loss ratios. You're doing calculations all the time.

Bull markets and Bear markets can obscure mathematical laws, they cannot repeal them.