Erik J. Wielenberg is an associate professor of philosophy at DePauw University in Greencastle, Ind. He is the author of Value and Virtue in a Godless Universe, which argues that life has meaning and a moral structure even if God does not exist.

Alister McGrath is a former atheist and now an evangelical Christian and a theology professor at the University of Oxford’s Harris Manchester College. He is a prolific writer and public apologist for Christianity and is author of several books, including The Twilight of Atheism: The Rise and Fall of Disbelief in the Modern World, In the Beginning: […]

William Lane Craig is a research professor in philosophy at Biola University in La Mirada, Calif. He lives in Atlanta, Ga. Craig wrote a chapter, “Theistic Critiques of Atheism,” for the Cambridge Companion to Atheism.

Susan Jacoby is the New York-based author of Freethinkers: A History of American Secularism.

The Rev. Edward T. Oakes is a Jesuit priest who teaches theology at the University of St. Mary of the Lake in Mundelein, Ill. Oakes wrote a Jan. 22, 2007, essay, “Reason and Pop Atheism,” posted on the blog of the conservative religious journal First Things.

Daniel C. Dennett is a professor of philosophy and director of the Center for Cognitive Studies at Tufts University in Medford, Mass. He is the author of Breaking the Spell: Religion as a Natural Phenomenon. A summary of his arguments can be found in this Jan. 20, 2006, essay, “Common-Sense Religion,” in The Chronicle of Higher Education. Dennett is a […]

The Society for Humanistic Judaism says it “offers a nontheistic alternative in contemporary Jewish life.” It was organized in Detroit in 1969 and has since added chapters and affiliated congregations around the United States.

The Secular Web is operated by Internet Infidels Inc. and is dedicated to “defending and promoting a naturalistic worldview on the Internet.” It is based in Colorado Springs, Colo. Contact through the website.

The Secular Student Alliance is based in Minneapolis and describes itself as “an umbrella organization uniting atheist, agnostic, humanist, rationalist, skeptic, and freethought students and groups on high school and campuses across the world.” The SSA has a list of affiliates around the country and the world.