Thomas Cahill is an American scholar and writer of Irish descent. He is best known for “The Hinges of History” book series in which he recounts formative moments in Western civilization, in a witty, Gibbonesque fashion. As of 2021, the series includes six books, among them “How the Irish Saved Civilization,” “The Gifts of the Jews,” “Desire of the Everlasting Hills,” and “Heretics and Heroes.”