Famous authors are often invited to elite dinner parties in New York City, a setting in which the rich Georgia drawl of Flannery O'Connor stood out like a dish of cheese grits next to the caviar. 

At one such event, O'Connor ended up talking to author Mary McCarthy, who opined that her childhood Catholicism had faded, but she still appreciated the Eucharist as a religious symbol. The reply of the fervently Catholic O'Connor became one of the most famous one-liners in a life packed with them.

"Well, if it's a symbol, to hell with it," replied O'Connor, as reported in a volume of her letters. "That was all the defense I was capable of but I realize now that this is all I will ever be able to say about it, outside of a story, except that it is the center of existence for me."

The fact that this literary legend now graces a U.S. postage stamp -- more than 50 years after her death -- is a testimony both to the greatness of O'Connor and to the fact that her radical, even shocking, vision of life has always been impossible to pigeonhole, said scholar Ralph C. Wood of Baylor University.

In particular, O'Connor refused to bow to man-made idols -- including the U.S. government and the civil religion many attach to it, said Wood, speaking at a National Philatelic Exhibition rite in McLean, Va., marking the release of the author's commemorative stamp. She refused to make her faith private and polite.