My First Million

Quote · My First Million

Mohnish Pabrai: This will save you 10 years of bad investments

Explore episode May 22, 2026

Where this was said

The cautionary tale of Rick Guerin

At 46:30 · chapter starts 45:38

When Pabrai asked Buffett at their charity lunch what had happened to Rick Guerin — Buffett and Munger's original, now-forgotten third partner — the question unlocked what Pabrai considers one of the most important investing lessons of his life. Guerin, Buffett explained, was always in a hurry. He used margin loans. When the 1973-74 bear market arrived — a slow-motion crash of more than 50% over two years — Guerin got margin calls and was forced to liquidate. Warren Buffett bought Guerin's Berkshire Hathaway shares from him for $40 each. Those shares are now worth over $700,000 per share. Buffett distilled the lesson simply: 'If you are even a slightly above-average investor, spend less than you earn, and do not use leverage, you cannot help but get rich over a lifetime.' Leverage is the one variable that can take a great investor and destroy them. Everything else can be survived. Leverage cannot.

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