John Kenneth Galbraith
Referenced repeatedly for insight on financial memory and speculative manias
Biography
John Kenneth Galbraith (1908–2006) was a Canadian-American economist, public intellectual, diplomat, and author of more than 30 books, including The Affluent Society (1958), The New Industrial State (1967), and The Great Crash 1929 (1954). He served as U.S. Ambassador to India under John F. Kennedy and was one of the most widely read public economists of the 20th century.
Despite never being an investor, Galbraith is the second most frequently referenced person in Marks' memo corpus — appearing in 31 memos with 62 total mentions, more than any other non-investor. This extraordinary frequency reflects how central Galbraith's observations about financial memory and speculative manias are to Marks' cycle framework.
The primary citation is from The Great Crash 1929: The financial memory is extremely short. Financial disaster is quickly forgotten. Marks has cited this observation consistently from his earliest memos in 1990 through his most recent ones in 2025 — across five separate market cycles — each time illustrating it with the specific mania of that era.
Unlike most of the people in this knowledge base, Galbraith never invested and never managed money. His influence arrived through books — above all A Short History of Financial Euphoria, which Marks still listed in 2025, alongside Edward Chancellor's Devil Take the Hindmost, among his favorite books about market excesses. The relationship was not purely literary, though. Writing in The Race to the Bottom (2007), shortly after Galbraith's death, Marks recorded a personal encounter: "I was fortunate to be able to spend a few hours with Mr. Galbraith a year and a half earlier and to have the benefit of his wisdom firsthand." That meeting, in late 2005, came just as the credit bubble whose collapse Galbraith's framework would so neatly explain was reaching its peak.
Key Stories
The Financial Memory Problem — Galbraith's central observation — that investors reliably forget the lessons of the previous crisis — is the foundational explanation for why boom-bust cycles repeat. If investors had perfect memory, each crisis would permanently alter behavior and future excesses would be moderated. But they do not: the pain of the last crisis fades, new entrants arrive who have no personal experience of it, and the specific trigger of the next mania is different enough to feel genuinely new. Marks uses Galbraith's insight to explain why the cycle is not an occasional anomaly but a permanent feature of financial markets — one that disciplines all Oaktree's investment positioning.
The 1929 Case Study — Galbraith's account of the 1929 Crash is the most detailed historical documentation of a speculative mania and its aftermath. Marks references it across decades because the psychological pattern — rising prices confirming bullish beliefs, confirming further rises, confirming further beliefs, until the system reverses catastrophically — has repeated in identical form in every subsequent era. The specific asset class and the specific institutions change; the human behavior does not.
Innocent Fraud — Galbraith's concept of "innocent fraud" — comfortable beliefs that are financially convenient for all parties and therefore maintained despite being false — is a concept Marks applies repeatedly to credit bubble episodes. Before the GFC, the "innocent fraud" was that AAA-rated mortgage-backed securities were genuinely safe. The raters, sellers, and buyers largely believed it. The fraud was innocent — which made it undetectable in advance and devastating in retrospect.
"This Time It's Different" — Galbraith's observation that each mania produces a new generation of investors who believe the unprecedented rise in asset prices is justified by genuinely new conditions is the historical foundation of Marks' repeated critique of "this time it's different" thinking. The conditions are never different enough to change the underlying dynamic: prices divorced from intrinsic value eventually return to it.
The Bezzle — In Cockroaches in the Coal Mine (2025), Marks revives a Galbraith concept he had not mentioned since The Long View in 2009: the bezzle, introduced in The Great Crash 1929 — the inventory of undiscovered fraud that accumulates during good times. Galbraith's insight, as Marks relays it, is that the bezzle is cyclical by construction: in good times people are relaxed and trusting, the rate of embezzlement grows, the rate of discovery falls off, and the bezzle swells; in depressions money is watched with a suspicious eye and the bezzle shrinks. Marks first deployed the concept against the Madoff scandal, writing in 2009 that the optimism and credulity of the cycle's top meant the atmosphere was right for what John Kenneth Galbraith called a good 'bezzle.' Sixteen years later he reached for it again amid the excesses of private credit. The bezzle lets Marks make a precise point: fraud is not an exogenous shock that interrupts the cycle but a product the cycle manufactures.
Two Kinds of Forecasters — Galbraith's most-quoted line in the corpus — "There are two kinds of forecasters: those who don't know, and those who don't know they don't know" — recurs across more than two decades of memos, from Nobody Knows (2001), written amid the post-dot-com rubble, through Risk Revisited (2014) and Uncertainty (2020) to The Folly of Certainty (2024). Marks treats it not as a witticism but as the cornerstone of Oaktree's macro agnosticism: if even professional forecasters cannot know the future, an investment process built on prediction is built on sand. In Mr. Market Miscalculates (2024) he pairs the forecasters line with the financial-memory observation, noting of the latter: "It's this trait that allows optimistic investors to engage in aggressive behavior, untroubled by knowledge of what such behavior led to in the past."
Nothing Reliable About Making Money — In It's Not Easy (2015), Marks sets Charlie Munger's "It's not supposed to be easy" alongside Galbraith's formulation of the same truth: "There is nothing reliable to be learned about making money. If there were, study would be intense and everyone with a positive IQ would be rich." Marks had first used the quote nine years earlier, in Dare to Be Great (2006), to argue that no formula for superior performance can exist — if one did, the collective actions of those following it would alter the landscape and bid the opportunity away. The argument is pure Galbraith applied to process: markets are competitive enough that ease is itself evidence of error.
Impact on Marks' Work
The Cycle Framework's Historical Anchor: Every Marks discussion of market cycles invokes Galbraith — sometimes explicitly, always implicitly. The reason credit markets repeat the same pattern is Galbraith's financial memory failure: investors forget, new entrants arrive, and the cycle begins again.
The Crisis Vocabulary: Galbraith provided Marks with the vocabulary for describing credit booms and busts: the transition from greed to fear, the euphoric phase where everyone believes prices are justified, the crash when reality intrudes. This vocabulary runs throughout the memo corpus.
Cross-Cycle Validation: By citing Galbraith across five separate market cycles (2001, 2007, 2009, 2020, 2022), Marks demonstrates that the pattern is not specific to any single era. The Galbraith observation is meta-empirical: it is confirmed by its own repetition across markets that Galbraith himself did not experience.
The Second Factor: In The Folly of Certainty (2024), Marks confesses that for decades he had cited Galbraith's first factor behind speculative euphoria — the brevity of financial memory — while neglecting the second: "the specious association of money and intelligence." When people get rich, others take that to mean they are smart; successful investors come to believe it themselves and opine confidently on fields far from their own. For Marks this is a discipline of humility: wealth is evidence of having been right in a market, not of general wisdom, and the confusion of the two is one of euphoria's quiet enablers.
Forecasting Agnosticism: Alongside Buffett's example, Galbraith's forecaster dichotomy is the intellectual license for Oaktree's refusal to build portfolios on macro prediction. Marks returns to it whenever the temptation to forecast is strongest — after the 2000 bubble, in the GFC, during the pandemic — because those are exactly the moments when the demand for confident prediction peaks and its reliability is lowest.
Key Passages From Marks' Memos
"Charlie Munger and I used to enjoy talking about the economist John Kenneth Galbraith. Galbraith was the source of many of my favorite expressions with regard to the financial markets."
— Cockroaches in the Coal Mine (2025)
"Over the years, I've often cited the wisdom of John Kenneth Galbraith. It's he who said, 'There are two kinds of forecasters: those who don't know, and those who don't know they don't know.'"
— The Folly of Certainty (2024)
"The first is the extreme brevity of the financial memory. . . . There can be few fields of human endeavor in which history counts for so little as in the world of finance."
— There They Go Again (2005)
"Another of my favorite Galbraith quotes is from his book A Short History of Financial Euphoria."
— The Folly of Certainty (2024)
"There is nothing reliable to be learned about making money. If there were, study would be intense and everyone with a positive IQ would be rich."
— Its Not Easy (2015)
"What’s a bezzle? In short, according to Galbraith, it’s the wealth financial fraudsters or embezzlers appear to have created, which lifts the spirits of the beneficiaries up until the time they’re found out."
— Cockroaches in the Coal Mine (2025)
"I was fortunate to be able to spend a few hours with Mr. Galbraith a year and a half earlier and to have the benefit of his wisdom firsthand."
— The Race to the Bottom (2007)
"The lessons from past periods of easy money usually fall on deaf ears since they come up against (a) ignorance of history, (b) the dream of profit, (c) the fear of missing out, and (d) the ability of cognitive dissonance to make people dismiss information that is inconsistent with their beliefs or perceived self-interest."
— Easy Money (2024)
Referenced In
Source: Howard Marks Knowledge Base — Oaktree Capital Management memos 1990–2025