On his faculty page, Mr. Singer argues: “Newborn human babies have no sense of their own existence over time. So killing a newborn baby is never equivalent to killing a person, that is, a being who wants to go on living. That doesn’t mean that it is not almost always a terrible thing to do. It is, but that is because most infants are loved and cherished by their parents, and to kill an infant is usually to do a great wrong to its parents.
“Sometimes, perhaps because the baby has a serious disability, parents think it better that their newborn infant should die. Many doctors will accept thei…