Arthur O. Lovejoy (1873-1962) was professor of philosophy at John Hopkins University where he founded the History of Ideas Club. He believed that the history of ideas should focus on singular concepts. He founded the Journal of the History of Ideas. Some of his most famous writings include Reflections on Human Nature, The Revolt against Dualism, and Primitivism and Related Ideas in Antiquity. Peter J. Stanlis is Distinguished Professor of Humanities Emeritus at Rockford College. He edited the Burke Newsletter and Studies in Burke for thirteen years, in addition to his many articles and books on various aspects of Edmund Burke's thought and politics. His most recent work is Robert Frost: The Poet as Philosopher.