Warren Buffett on Business : Principles from the Sage of Omaha

Chapter 15

Mistakes I’ve Made

Agonizing over errors is a mistake. But acknowledging and analyzing them can be useful, although that practice is rare in corporate boardrooms. . . . Dumb decisions either get no follow-up or are rationalized.¹

—WARREN BUFFETT

Mistakes of the First Twenty-Five Years (A Condensed Version)

To quote Robert Benchley, “Having a dog teaches a boy fidelity, perseverance, and to turn around three times before lying down.” Such are the shortcomings of experience. Nevertheless, it’s a good idea to review past mistakes before committing new ones. So let’s take a quick look at the last 25 years.

• My first mistake, of course, was in buying control of Berkshire. Though I knew its business—textile manufacturing—to be unpromising, I was enticed to buy because the price looked cheap. Stock purchases of that kind had proved reasonably rewarding in my early years, though by the time Berkshire came along in 1965, I was becoming aware that the strategy was not ideal.

If you buy a stock at a sufficiently low price, there will usually be some hiccup in the fortunes of the business that gives you a chance to unload at a decent profit, even though the long-term performance of the business may be terrible. I call this the “cigar butt” approach to investing. A cigar butt found on the street that has only one puff left in it may not offer much of a smoke, but the “bargain purchase” will make that puff all profit.

Unless you are a liquidator, that kind of approach to buying ...