"A realistic definition of risk recognizes the potential loss of capital through inflation and taxes, and would include at least the following two factors: The probability that the investment you chose will preserve your capital over the time you intend to invest your funds. The probability the investments you select will outperform alternative investments for this period."

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I believe in market economics. But to paraphrase Churchill - who said this about democracy and political regimes - a market economy might be the worst economic regime available, apart from the alternatives. I believe that people react to incentives, that incentives matter, and that prices reflect the way things should be allocated. But I also believe that market economies sometimes have market failures, and when these occur, there's a role for prudential - not excessive - regulation of the financial system.

— Nouriel Roubini