“I found that the relationship between the Average and my individual stocks was confined within certain principles, but they could not be measured exactly. From then on I made up my mind to keep watching the Dow Jones Industrial Average, but only in order to determine whether I was in a strong or a weak market. This I did because I realized that a general market cycle influences almost every stock. The main cycles like a bear or bull market usual creep into the majority of them.”

-Nicolas Darvas, Nicolas . How I made 2,000,000 in the stock Market. Larchmont, NY: American Research Council, 1960.