The simpler it is, the better I like it.
During the Gold Rush, most would-be miners lost money, but people who sold them picks, shovels, tents and blue-jeans (Levi Strauss) made a nice profit.
It isn't the head but the stomach that determines the fate of the stockpicker.
The best stock to buy is the one you already own.
Go for a business that any idiot can run - because sooner or later, any idiot probably is going to run it.
Absent a lot of surprises, stocks are relatively predictable over twenty years. As to whether they're going to be higher or lower in two to three years, you might as well flip a coin to decide.