The Heisenberg principle - If something is closely observed, the odds are it is going to be altered in the process. The more a price pattern is observed by speculators the more prone you have false signals; the more the market is a product of nonspeculative activity, the greater the significance of technical breakout

If you don't work very hard, it is extremely unlikely that you will be a good trader.

Risk management is the most important thing to be well understood. Undertrade, undertrade, undertrade is my second piece of advice. Whatever you think your position ought to be, cut it at least in half.

The first rule of trading - there are probably many first rules - is don't get caught in a situation in which you can lose a great deal of money for reasons you don't understand.

In 1983, I set up Caxton Corp. Its been an interesting and happy ride since.

The Heisenberg principle - If something is closely observed, the odds are it is going to be altered in the process. The more a price pattern is observed by speculators the more prone you have false signals; the more the market is a product of nonspeculative activity, the greater the significance of technical breakout

Whenever I enter a position, I have a predetermined stop. That is the only way I can sleep. I know where I'm getting out before I get in. The position size on a trade is determined by the stop, and the stop is determined on a technical basis... I never think about [stop vulnerability], because the point about a technical barrier - and I've studied the technical aspects of the market for a long time - is that the market shouldn't go there if you are right.