Dr. Peter Kreeft's BIO (Answering in the Negative): A full-time professor of philosophy at Boston College since 1965, Dr. Kreeft is one of the most popular and widely ready Christian authors of today. He is a regular contributor to various Christian publications, and a sought-after public speaker at conferences nationwide. Kreeft has authored over 45 books which have covered a vast array of subjects – from angels and demons and heaven and hell, to defending Christian beliefs, understanding suffering, morality, philosophy, life on earth, and God. Prior to his longtime tenure at Boston College, Professor Kreeft taught at Villanova University for four years. He is an alumnus of Calvin College (A.B., 1959) and Fordham University (M.A., 1961, Ph.D., 1965). He is married with four children, and four grandchildren “so far,” and says he “of course has learned infinitely more from them than from books.”

Dr. David Boonin's BIO (Aswering in the Affirmative): Dr. Boonin graduated summa cum laude from Yale College in 1986, earning distinction in both of his majors: philosophy and history. He received his PhD in philosophy from the University of Pittsburgh in 1992, and then held positions at Georgetown University and Tulane University before joining the department at the University of Colorado in 1998. He also held a visiting position for a semester as an Erskine Fellow at the University of Canterbury in Christchurch, New Zealand, in 2006. Professor Boonin is the author of three books, all published by Cambridge University Press, including A Defense of Abortion, which was published in 2003 and which received honorable mention the following year in the American Philosophical Association's book prize competition. He is also the co-author and co-editor of a popular applied ethics textbook, and the author of a number of articles on a variety of subjects in applied ethics including animal rights, euthanasia, same-sex marriage, and our moral obligations to future generations.