Stephen Post, PhD, is a professor of bioethics at Case Western Reserve University’s School of Medicine. He is president of the Institute for Research on Unlimited Love, and his work has appeared in top journals such asJAMA,Science, andThe Lancet. Jill Neimark is a journalist, novelist, and former features editor forPsychology Todaywhose work has appeared inThe New York Times,TheEconomist, andDiscover.