Jesse Lauriston Livermore (1877 - 1940), American financial speculator.

Some selected quotes from the famous speculator:

• “In a bull market your game is to buy and hold until you believe that the bull market is near its end.”
• “It never was my thinking that made the big money for me. It always was my sitting. Got that? My sitting tight!”
• “The market does not beat them. They beat themselves, because though they have brains they cannot sit tight.”
• “Experience has proved to me that real money made in speculating has been in commitments in a stock or commodity showing a profit right from the start.”
• “It is literally true that millions come easier to a trader after he knows how to trade, than hundreds did in the days of his ignorance.”
• “A great many smashes by brilliant men can be traced directly to the swelled head — an expensive disease everywhere to everybody, but particularly in Wall Street to a speculator.”
• There is only one side to the stock market; and it is not the bull side or the bear side, but the right side”