There is no tougher job in corporate America than running an airline: Despite the huge amounts of equity capital that have been injected into it, the… - Warren Buffett

But a pin lies in wait for every bubble. And when the two eventually meet, a new wave of investors learns some very old lessons: First, many in Wall Street — a community in which quality control is not prized — will sell investors anything they will buy. Second, speculation is most dangerous when it looks easiest.

You want to be greedy when others are fearful. You want to be fearful when others are greedy. It's that simple. ... They're pretty fearful. In fact, in my adult lifetime, I don't think I've ever seen people as fearful economically as they are right now.

When returns on capital are ordinary, an earn-more-by-putting-up-more record is no great managerial achievement. You can get the same result personally while operating from your rocking chair. Just quadruple the capital you commit to a savings account and you will quadruple your earnings. You would hardly expect hosannas for that particular accomplishment. Yet, retirement announcements regularly sing the praises of CEOs who have, say, quadrupled earnings of their widget company during their reign — with no one examining whether this gain was attributable simply to many years of retained earnings and the workings of compound interest.