The first time that line was used was 1964, for Barry Goldwater's campaign. It spawned a response bumper sticker from the Flat Earth Society: IN YOUR HEART, YOU KNOW IT'S FLAT.

I saw a book from some right wing idiot yesterday simply titled, 'You Know I'm Right.' That's it. That's his thesis statement. That's where he'd like to *begin* the discussion. It caused me to note that everyone I've ever heard use that argument in person was wrong, too.