About the Author    Michael P. Cahill   Michael P. Cahill has a Ph.D. in History from the University of Chicago. He has taught Church history part-time at Mundelein Seminary for many years and served as chair of Chicago's Archdiocesan Pastoral Council. A lifelong Catholic, he is married to Cathy O'Connell-Cahill, senior editor of US Catholic magazine. They have two adult children and belong to Our Lady of Mercy Catholic Parish in Chicago.
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