Susan Jacoby is the author of Freethinkers: A History of American Secularism, now in its tenth hardcover printing and recently published in paperback. Freethinkers was hailed in the New York Times as an "ardent and insightful work that seeks to rescue a proud tradition from the indifference of posterity." Named a notable nonfiction book of 2004 by The Washington Post and The Los Angeles Times, Freethinkers was cited in England as one of the outstanding international books of 2004 by the Times Literary Supplement and The Guardian. In this interview with DJ Grothe, she discusses America's freethought heritage, and talks about Robert Green Ingersoll, and the role of freethinkers in various social justice movements. Also in this episode, Tom Flynn asks Did You Know?, detailing facts about Robert Green Ingersoll and new data about nonbelievers from University of Akron, and Lauren Becker shares some thoughts on Darwin and Olver Sacks and what these scientists teach us about ourselves.