Livermore on patience

In a narrow market,when prices are not getting anywhere to speak of but move within a narrow range, there is no sense in trying to anticipate what the next big movement is going to be up or down. The thing to do is to watch the market, read the tape to determine the limits of the get-nowhere prices, and make up your mind that you will not take an interest until the price breaks through the limit in either direction. A speculator must concern himself with making money out of the market and not with insisting that the tape must agree with him. Never argue with it or ask it for reasons or explanations. Stock-market post-mortems don’t pay dividends.

Do you wish to gamble blindly in the hope of getting a great big profit or do you wish to speculate intelligently and get a smaller but much more probable profit?

Livermore on sentiment

In a bull market bear factors are ignored. In a bear market bull factors don’t matter.

When a man makes his play in a commodity market he must not permit himself set opinions. He must have an open mind and flexibility. It is not wise to disregard the message of the tape, no matter what your opinion of crop conditions or of the probable demand may be. I recall how I missed a big play just by trying to anticipate the starting signal. I felt so sure of conditions that I thought it was not necessary to wait for the line of least resistance to define itself. I even thought I might help it arrive, because it looked as if it merely needed a little assistance.

Taleb on Risk Management

It is particularly shocking that people do what is called “stress tests” by taking the worst possible past deviation as an anchor event to project the worst possible future deviation, not thinking that they would have failed to account for such deviation had they used the same method on the day before that past  anchor event.