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Pain plus reflection equals progress.

growthlearning— Principles
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The biggest mistake investors make is to believe that what happened in the recent past is likely to persist.

investingmarkets— Principles
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He who lives by the crystal ball will eat shattered glass.

humilitymarkets— Bridgewater research
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Diversification is the holy grail of investing.

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I could be wrong. I need to make sure I can survive being wrong.

humilityrisk-management— Various interviews
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The most important thing you can do is to know what you don't know.