If you have trouble imagining a 20% loss in the stock market, you shouldn't be in stocks.

Investors
John C. Bogle
Born in 1929, John Bogle founded Vanguard and launched the first index fund for individuals. The "father of index funds" championed low cost and diversification, challenging Wall Street and democratizing investing.
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John C. Bogle's Other Quotes
Related Quotes
It is important to express oneself, provided the feelings are real and taken from your own experience.
-- Berthe Morisot
In this business, if you're good, you're right six times out of ten. You're never going to be right nine times out of ten.
-- Peter Lynch
You can't predict. You can prepare.
-- Howard Marks
The most important thing is being attentive to cycles.
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The markets teach you humility every single day.
-- Ken Griffin
It's not whether you're right or wrong that's important, but how much money you make when you're right and how much you lose when you're wrong.
-- George Soros