Gregory Pence is an American bioethicist, author, and public speaker. About Gregory Pence Professor Pence has written several best-selling books including Pandemic Bioethics, Overcoming Addiction, and Medical Ethics: Accounts of Ground-Breaking Cases (9th edition). View All Books Essays by Professor Pence have been published in Newsweek, the New York Times, Los Angeles Times, Chronicle of Higher Education, and Wall Street Journal. View Publications