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Insanity is doing the same thing over and over while expecting different results.

( Jesse Livermore )

Diversification is protection against ignorance. It makes little sense if you know what you are doing.

( Warren Buffett )

No matter what kind of math you use, you wind up measuring volatility with your gut.

( Ed Seykota )

A bull market is like sex. It feels best just before it ends.

( Barton Biggs )

Optimism means expecting the best, but confidence means knowing how to handle the worst.

( Max Gunther )

Patterns of price movement are not random. However, they're close enough to random.

( Jim Simons )

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

( John “Jack” Bogle )