As a somewhat left of center Protestant, I've been accused on occasion of heretical views. I was even fired from teaching post for being too liberal for the school. I'm not averse to occasionally suggesting that certain theological perspectives, while not heretical, are bad theology. As a Protestant, who has come to admire the current holder of Peter's episcopal seat, I find interesting that some of his own flock find the Pope to be heretical. Martin Marty takes note of some of this discussion, helping us make sense of such words as infallibility, dogma, and doctrine. I invite you to read and consider Marty's incisive commentary. Offer up some of your own.