Ray Dalio

Dalio thinks in cycles — economic cycles, debt cycles, historical cycles that repeat over decades and centuries. His core belief: everything in markets has happened before.

Study history deeply enough and you can anticipate what comes next. He called the long-term decline of US dollar dominance a slow, inevitable process — not a crisis tomorrow, but not permanent either.

His All Weather approach is built for radical uncertainty. Instead of predicting what will happen, build a portfolio that does okay no matter what.

Stocks, bonds, gold, and commodities tend to move in different directions across different economic environments. Own a smart mix and you're never completely wrong.

Charlie Munger

Munger's whole thing is mental models. The idea is simple: instead of being an expert in one field, you learn the core concepts from as many different fields as possible — psychology, biology, physics, economics, history — and then use that whole toolkit to think about problems.

He calls it a latticework of mental models. It sounds like a self-help concept.

It's actually how he consistently made better decisions than almost everyone around him. On investing, he pushed Buffett away from his old mentor's approach — which was basically "find dirt-cheap companies and flip them fast" — toward something more durable: find the best businesses in the world and hold them forever.

The key word he uses is moat. A business so dominant that competitors can't touch it.

Think Coca-Cola. He was also deeply influenced by psychology, particularly the ways humans reliably fool themselves.

He gave a famous talk called "The Psychology of Human Misjudgment" listing 25 ways our brains get things wrong. Reading it once will change how you make decisions.

Ray Dalio

His most important principle: pain plus reflection equals progress. He applied this to investing, management, and life.

Most people's biggest problem is they avoid pain instead of learning from it. His second idea: diversification is the holy grail of investing.

Not 15 correlated stocks — real diversification across asset classes, geographies, and economic environments that actually move differently. Third: everything is a machine.

Markets, economies, relationships — they all operate by rules that can be understood if you study them. He documented all his rules in a book called Principles.

Whether or not you agree with him, very few investors have been this explicit about writing everything down.

Charlie Munger

Invert. Always invert.

That's his most famous rule — borrowed from the mathematician Jacobi. Instead of asking "how do I succeed?" ask "what would guarantee failure, and then avoid those things." It sounds obvious.

Almost nobody actually does it. He believes the secret to a good life and good investing is the same: figure out what you want to avoid, avoid it relentlessly, and most good things follow.

On wealth: getting rich isn't the hard part — keeping it is. Most people blow up by using borrowed money, getting greedy at the top, or panicking at the bottom.

Don't do those things. On decisions: only make the big bet when you're very sure.

Be patient for a long time, then move fast when the opportunity is obvious.

Ray Dalio

He hates overconfidence in any single bet. The 1982 disaster cured him of that.

His solution: systematically stress-test every idea. Hire people to argue against you.

Find the best counterargument to your own position, then decide. He called this "believability-weighted decision making" — the person who has been right more often on a specific topic gets more weight in any disagreement.

At Bridgewater, this became formalized into actual systems and algorithms. His personal risk profile is moderate.

He doesn't use excessive leverage, and All Weather is explicitly designed to reduce volatility rather than maximize return.

Charlie Munger

Munger's approach to risk: don't take risks you don't understand, and don't take risks you don't need to. He kept things simple.

He concentrated into a small number of businesses he understood deeply. He never used borrowed money.

He kept large cash reserves. His view on diversification was almost the opposite of what most financial advisors tell you — he thought spreading money across 50 stocks was an admission that you hadn't done enough homework.

If you've done the work, you concentrate. If you haven't, maybe don't invest at all.

Ray Dalio

He lives in Westport, Connecticut. He practices transcendental meditation daily and says it's one of the most important habits in his life.

He runs and practices yoga. He and his wife Barbara pledged to give away more than half their wealth through the Dalio Philanthropies, focusing on ocean conservation, education reform in Connecticut, and mental health research.

He posts long essays on LinkedIn about global macro trends — which is either a public service or unsolicited geopolitical commentary, depending on how you feel about him.

Charlie Munger

Munger lived in the same house in Los Angeles for most of his adult life. He was famously frugal — not in a miserable way, but in a "I genuinely don't care about most things money buys" way.

He flew commercial until fairly recently. He read obsessively.

He described himself as a book with legs. His children joked that he was more interesting to talk to than almost anyone alive, but would only engage on topics he found intellectually stimulating.

He donated massively to education — hundreds of millions to Harvard Law School, the University of Michigan, and other institutions, often with very specific conditions attached. He designed buildings as a hobby and funded their construction himself.

He died at 99 worth around $2.6 billion — extraordinary by any measure, and somehow modest given he sat next to one of the richest men in history for 45 years.

Ray Dalio

2008. While most hedge funds were losing 20 to 30 percent, Bridgewater's Pure Alpha fund returned +9.5% and the All Weather fund was roughly flat.

This wasn't luck. Dalio had been warning about the debt bubble for years.

Clients who followed his framework avoided the worst of it. By 2010, Bridgewater managed $80 billion.

The win wasn't a single trade — it was being structurally right about the entire environment when almost everyone else was wrong.

Charlie Munger

See's Candies. In 1972, Munger convinced a reluctant Buffett to pay what seemed like an expensive price — $25 million — for a California candy company.

Buffett thought it was too much. Munger held firm.

See's has since generated over $2 billion in profit for Berkshire, basically funding dozens of other acquisitions. It also taught Buffett the single most important lesson of his career: paying a fair price for a great business beats getting a cheap price for a mediocre one.

That one deal changed the entire direction of Berkshire Hathaway.

Ray Dalio

1982. He predicted a depression caused by Mexico's debt default.

He was wrong. He lost his own money, had to lay off all his staff, and borrowed $4,000 from his father.

He's talked about it publicly as the most formative experience of his life. The lesson he drew: strong conviction without aggressive stress-testing is just expensive confidence.

He also admitted later that his radical transparency culture at Bridgewater went too far in some ways. Recording every conversation and requiring every decision to be challenged in real time worked as a philosophy.

As a daily workplace experience, multiple lawsuits and employee complaints suggested it could become oppressive rather than honest.

Charlie Munger

Munger is famous for avoiding mistakes more than for making spectacular wins — his whole philosophy is about not doing stupid things. But he's admitted to a few.

He said Berkshire was too slow to move into BYD, China's electric vehicle company, despite knowing it was exceptional for years before they finally bought in. He also held too much Wesco Financial for too long when the money could have been put to better use elsewhere.

His most honest self-criticism: he wished he had moved faster when the evidence was already clear. For a man who spent his career warning others about psychological biases, he wasn't immune to them.

Ray Dalio

Ray Dalio grew up in a middle-class family in Jackson Heights, Queens. At 12, he bought shares in Northeast Airlines for $300 using money earned caddying.

The airline was taken over shortly after and his shares tripled. That was the moment.

He studied finance at Long Island University, got an MBA from Harvard Business School in 1973, then worked at Merrill Lynch and a commodities firm. In 1975 he started Bridgewater Associates out of a two-bedroom New York apartment.

Just him and a phone. By the late 1980s Bridgewater was advising pension funds, sovereign wealth funds, and central banks.

By 2012 it was the largest hedge fund in the world.

The 1982 disaster shaped everything. Dalio publicly predicted a depression triggered by Mexico's debt default.

He was wrong. He lost so much that he laid off his entire staff and borrowed $4,000 from his father to cover expenses.

He rebuilt completely from that near-failure. The experience taught him that strong conviction without aggressive stress-testing is just expensive confidence.

Charlie Munger

Charlie Munger grew up in Omaha — same city as Buffett, but they didn't know each other yet. His father was a lawyer.

So was his grandfather. Charlie became one too, but he was clearly more interested in figuring out how the world worked than in courtrooms.

He studied math at the University of Michigan, got drafted into World War II, trained as a meteorologist, and somehow ended up at Harvard Law School without ever finishing an undergraduate degree. Harvard took him anyway.

He graduated in 1948 and moved to California to practice law. He was good at it.

He was also quietly building a real estate business on the side that made him more money than law ever did. He and Buffett met at a dinner in Omaha in 1959.

Munger was 35. Buffett was 28.

By the end of the night, Buffett was trying to convince Munger to go into investing full time. It took about a decade.

Munger ran his own investment partnership from 1962 to 1975 — returned 24% annually while the market did 6.4%. Then he fully merged his career with Buffett's at Berkshire, where he stayed until his death in 2023.

Ray Dalio

Bridgewater Associates is the whole story. He founded it in 1975, built it to $150 billion in assets under management, and stepped back from day-to-day management in 2017 before stepping down as co-CEO in 2022.

The fund runs two main strategies. Pure Alpha seeks to outperform markets through active macro bets.

All Weather is designed to perform adequately in any economic environment — regardless of whether growth is rising or falling, inflation is high or low. The All Weather approach has been widely copied under the name "risk parity." He has also invested personally in various companies and become a prominent voice on global debt cycles and geopolitics.

Charlie Munger

Munger's main stage was Berkshire Hathaway, where he served as Vice Chairman from 1978 until he died. His role was hard to define on paper — he didn't run a fund or manage a portfolio.

What he actually did was talk to Buffett. That was worth a trillion dollars.

Before Berkshire, he ran his own investment partnership from 1962 to 1975 that crushed the market. He also controlled Wesco Financial, a small insurance and financial company he ran as a personal Berkshire subsidiary from 1973 to 2011, until Berkshire fully absorbed it.

Outside finance, he was obsessed with architecture — he personally designed several buildings, including a dormitory at the University of Michigan that his own architecture school rejected for violating design principles. He funded it anyway.

Ray Dalio

BA from C.W. Post College (now Long Island University), 1971.

MBA from Harvard Business School, 1973. He's talked about not being a great student — he got into Harvard on determination and test scores rather than academic polish.

Charlie Munger

University of Michigan, mathematics — left for World War II without graduating. US Army Air Corps, meteorology training.

Harvard Law School, JD 1948 — admitted without an undergraduate degree, which Harvard is apparently capable of when it wants to be.