Warren Buffett's principles for business, management, and risk

Executive overview

Most businesses fail not because of poor execution but because they are in bad businesses. Buffett's core insight: the quality of the boat you get into matters more than how hard you row.

Peter Bevelin distills 50+ years of Buffett's shareholder letters into a short, topically organised reference. The book covers what makes a business great versus gruesome, how to hire and manage, and how to reduce risk by staying simple.

The single most important business decision is choosing the right business in the first place.

Great, good, and gruesome businesses

• Great businesses: high returns on capital, sustainable moat, few reinvestment needs to grow
• A moat is any superiority that makes life difficult for competitors — brand, cost structure, switching costs
• Ask: could a well-funded, talented competitor beat this business? If yes, the moat is weak
• Gruesome businesses grow fast, require heavy capital, and earn little — airlines are the archetype
• In commodity businesses, being the low-cost producer is the only durable advantage
• In a commodity business it is impossible to be smarter than your dumbest competitor
• The "have to be smart every day" business is one to avoid; seek the "have to be smart once" business instead

Compounding through ordinary excellence

• Great results come from doing ordinary things exceptionally well over a long period of time
• Widening the moat — delighting customers, cutting unnecessary costs, improving products — compounds slowly but enormously
• When short-term and long-term conflict, widening the moat must take precedence
• Almost all of a business's profits are 10–20 years in the future; short-term growth metrics are misleading
• A good managerial record is far more a function of what business you enter than how effectively you run it

Hiring and people

• Focus on brains, passion, and integrity — not resumes or credentials
• Newly minted MBAs often have impressive records but are short on personal commitment
• Never make a good deal with a bad person, regardless of how attractive the business looks
• Remove mediocre managers however likable; do not discard superstars simply because they are old
• Hire people bigger than you: if each hire is smaller, you build a company of dwarfs

Management philosophy

• Hire well, manage little — trust people, not process; free managers from meetings and financing worries
• Run the business as if you own 100% of it, it is the only asset your family will ever have, and you cannot sell it for a century
• Just tell me the bad news — good news will take care of itself
• Tie compensation to the results the manager controls, not broader company performance; do not cap bonuses
• Treat every hire as a long-term cost decision, not a current-year expense
• Budget based on what makes sense, not as a fixed percentage of revenue

Focus and simplicity

• Loss of focus is the greatest risk — a great business neglected while chasing mediocre acquisitions destroys value
• Activity is not progress; the thrill of the chase blinds acquirers to the consequences of the catch
• Pascal: all of men's misfortunes spring from a single cause — the inability to sit quietly in a room
• No master strategy, no corporate planners — answer the phone and act when something sensible appears
• The truly big investment idea can be explained in a short paragraph

Risk and survival

• Degree of difficulty does not count; a single correct insight into an easy business pays the same as getting ten complex variables right
• If one key variable has a 90% success probability, the chance of success is 90%. If ten independent variables each need to go right at 90%, the chance of success falls to 35%
• Avoid dumb decisions rather than trying to make brilliant ones; be smart a few times a year, not every day
• Leverage often produces a zero — a long string of impressive numbers multiplied by a single zero always equals zero
• To finish first, you must first finish; the roads of business are riddled with potholes
• Maintain liquidity so you can play offence during crises while others scramble for survival
• When everyone else is conducting affairs with less prudence, conduct your own with more
• Nothing sedates rationality like large doses of effortless money — speculation is most dangerous when it looks easiest

Institutional imperative and independent thinking

• Executives mindlessly imitate peer behaviour no matter how foolish — Buffett calls this the institutional imperative
• What the wise do in the beginning, fools do in the end
• Bureaucracy begets more bureaucracy; high-cost cultures are rarely reformed from within
• Corporate palaces induce imperious behaviour; size creates slow thinking and smugness
• We would rather suffer the visible costs of a few bad decisions than incur invisible costs from decisions made too slowly

Learning from mistakes

• Do postmortems on dumb decisions — this practice is rare in boardrooms
• Triumphs get trumpeted; failures get rationalised or ignored
• Agonising over errors is a mistake; analysing them is not
• Attack growing problems early — the time to act is now
• It is better to learn from others' mistakes than your own