Fundamentals might be good ...

Fundamentals might be good for the first third or first 50 or 60 percent of a move, but the last third of a great bull market is typically a blow-off, whereas the mania runs wild and prices go parabolic... There is no training, classroom or otherwise, that can prepare for trading the last third of a move, whether it's the end of a bull market or the end of a bear market.
 See image
 Paul Tudor Jones

Quotes from the same author

Don't be a hero. Don't have an ego. Always question yourself and your ability. Don't ever feel that you are very good. The second you do, you are dead.
 See image
 Paul Tudor Jones
First if all, never play macho man in the market. Second, never overtrade. My major problem was not the number of points I lost on the trade, but that I was trading far too many contracts relative to the equity in the accounts that I handled.
 See image
 Paul Tudor Jones
You can achieve great economic gains by solving social problems.
 See image
 Paul Tudor Jones
There is no training, classroom or otherwise, that can prepare for trading the last third of a move, whether it's the end of a bull market or the end of a bear market.
 See image
 Paul Tudor Jones
When you get a range expansion, the market is sending you a very loud, clear signal that the market is getting ready to move in the direction of that expansion.
 See image
 Paul Tudor Jones