The correct version is probably "Even if you're on the right track you'll get run over if you just sit there." Variants include " . . . you'll just be roadkill if you just sit there" and of course the variant Armitage attributed to MT. The "even if" quote is routinely attributed to MT and several others, including even Arthur Godfrey(!). But it probably belonged to Will Rogers. I cannot cite an original source but the "even if" quote is attributed to Rogers in, I seem to recall, _The Boy Who Invented Television_, whose author (again I think) did his homework. . . . (Edmon L. Rowell, Jr.) "I'm just tryin' to get by being quiet and shy in a world full of pushin' and shove." --Jimmy Buffett