Dennis Gartman believes the rally in stocks will continue, and he draws upon his years of trading experience to make that determination.
"I will simply use an old man's view of the market, and say it's been moving from the lower left to the upper right," the editor and publisher of The Gartman Letter said on Tuesday's "Futures Now." "Weakness has been properly purchased and strength has been improperly sold. It will continue to go up until the trend lines are broken—and right now they are far from being broken."
Investors must continue to obey the charts, Gartman said.
"Write this down: 'It will continue to go up until it stops,' " he said. "I've only been at this 40 years, but I'm constantly amused by attempts to discern where the top shall be, or conversely, where the bottom shall be. Stocks stop going down when they stop. Stocks stop going up when they stop. That's the best you can do."
(Read more: Byron Wien: Why I've become bullish on the market)