Business
Breeders who select for a single desired trait find that other traits come along with it. The author treats a business's return on the capital it uses the same way: a high return tends to travel with strong management, sound capital allocation, a lasting competitive edge and the ability to grow. That makes it his first screen, before deeper analysis.
The author argues that, held in the right businesses, inactivity becomes a competitive advantage rather than a failure to act. Short-term price swings are mostly meaningless noise, so he almost never sells and keeps only a few specific reasons to do so. His mantra is don't be lazy, be very lazy.
The author separates two mistakes: backing a bad investment you thought was good, and passing on a good one you thought was bad. He argues the first does far more damage, because it can mean a permanent loss, so he accepts missing many winners to avoid it. In his view, minimizing the chance of permanent loss matters more than chasing upside.
The author's strategy deliberately rejects the vast majority of opportunities rather than trying to evaluate each one on its merits. A narrow filter that shuts out most candidates is how he lowers the odds of a costly wrong yes.
The author holds that profit margins and earnings before interest and taxes can mislead, because they can obscure other financial problems and say nothing about how much capital it took to earn the profit. A thin-margin seller turning its capital over rapidly can be a better business than a high-margin one. Return on capital employed shows how hard the money is actually working.
The author argues that detailed valuation models produce a false precision, with exact-looking numbers unrelated to the real question: is this a good long-term business to own? He doesn't discard the tools. He rejects letting them run unchecked, and prefers to value what a business has already proven over projected cash flows.
Unrelated species often evolve the same solution independently. The author argues businesses do something similar: certain business models win again and again across eras and countries, while others reliably destroy capital wherever they appear. Recognizing which type a company belongs to tells you much before you study its details.
The author's rule pairs quality with price: buy high quality, but only at a fair price. A superb business does not justify paying anything for it.
The author holds that most wealth comes from a tiny handful of companies kept for very long periods. Selling early or trading often cuts off the rare long compounding runs that produce most of the gains. This is why he favors owning high-quality businesses permanently.
A small frog can mimic the croak of a larger rival to seem more formidable. The author uses this to frame corporate dishonesty: weaker businesses and managers may copy the outward signs of strength. Investors must therefore check whether the signals match the underlying substance.