I have always found it profitable to study my mistakes. Thus I eventually discovered that it was all very well not to lose your bear position in a bear market, but that at all times the tape should be read to determine the propitiousness of the time for operating. If you begin right you will not see your profitable position seriously menaced; and then you will find no trouble in sitting tight.

—-REMINISCENCES OF A STOCK OPERATOR by Edwin LeFevre