Ralph Barton Perry (1876-1957) was long associated with the outstanding philosophy department at Harvard, as student and professor, during its heyday. He was the author of nearly two dozen books, among which Puritanism and Democracy and several others are still in print. Charlene Haddock Seigfried, Professor of Philosophy and American Studies at Purdue University and President of the Society for the Advancement of American Philosophy, is the author of two previous books on William James: William James's Radical Reconstructionism of Philosophy and Chaos and Context: A Study in William James.