Markets are constantly in a state of uncertainty and flux, and money is made by discounting the obvious and betting on the unexpected.

Investors
George Soros
George Soros survived Nazi-occupied Hungary, studied under Karl Popper, and built Quantum Fund into a premier hedge fund. He netted $1B shorting the pound in 1992 and has given over $32B to philanthropic causes.
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George Soros's Other Quotes
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.
I'm only rich because I know when I'm wrong.
Once we realize that imperfect understanding is the human condition, there is no shame in being wrong, only in failing to correct our mistakes.
The financial markets generally are unpredictable. So that one has to have different scenarios... The idea that you can actually predict what's going to happen contradicts my way of looking at the market.
Related Quotes
You have to understand the business before you understand the stock.
-- Mario Gabelli
Concentration is the key. If you believe in something, you should bet big on it.
-- Bruce Berkowitz
The bulls might be right that the company's accounting is fine, but they're asking us to take it on faith. We prefer to verify.
-- David Einhorn
To buy when others are despondently selling and to sell when others are avidly buying requires the greatest fortitude and pays the greatest ultimate rewards.
-- John Templeton
An investor who has all the answers doesn't even understand the questions.
-- John Templeton
The single greatest edge an investor can have is a long-term orientation.
-- Seth Klarman