Talking to Time Magazine a few years back, Peter Drucker got to the heart of things: “I will tell you a secret: Dealmaking beats working. Dealmaking … - Warren Buffett

The line separating investment and speculation, which is never bright and clear, becomes blurred still further when most market participants have recently enjoyed triumphs. Nothing sedates rationality like large doses of effortless money. After a heady experience of that kind, normally sensible people drift into behavior akin to that of Cinderella at the ball. They know that overstaying the festivities—that is, continuing to speculate in companies that have gigantic valuations relative to the cash they are likely to generate in the future—will eventually bring on pumpkins and mice. But they nevertheless hate to miss a single minute of what is one helluva party. Therefore, the giddy participants all plan to leave just seconds before midnight. There's a problem, though: They are dancing in a room in which the clocks have no hands.

Those who attended [the annual meeting] last year saw your Chairman pitch to Ernie Banks. This encounter proved to be the titanic duel that the sports world had long awaited. After the first few pitches — which were not my best, but when have I ever thrown my best? — I fired a brushback at Ernie just to let him know who was in command. Ernie charged the mound, and I charged the plate. But a clash was avoided because we became exhausted before reaching each other.

Read 500 pages like this every week. That’s how knowledge builds up, like compound interest.