In practice, I run every play like I'm scoring a touchdown. Mercury Morris More Quotes by Mercury Morris More Quotes From Mercury Morris I started out in a kid’s backyard playing touch football and I never abandoned the principle when I got to the pros: if they can’t touch you, they can’t tackle you. Mercury Morris principles football kids I had had enough and I quit, and there is a distinction…You retire when the game has had enough of you. You quit when you have had enough of the game. Mercury Morris had-enough quitting games