Peter Singer and Christian Ethics: Beyond Polarization

For those of us doing Catholic moral theology, we most often hear and read the name “Peter Singer” invoked by our colleagues in a dismissive way.  Indeed, if one can somehow show that another’s argument is heading in a Singer-like direction, then for many of us one essentially has reduced it to the absurd.  Furthermore, and very unfortunately, Singer remains consistently dismissed as a ‘popularizer’ who can’t be taken seriously as an academic given how widely his work is read.

But when I actually look carefully and systematically at his work I see not only how consistent and even rigorous it often is, but also how much it common it has with Christian Ethics.  Consider, for instance, the topic of abortion.  Though Peter Singer is pro-choice for abortion and infanticide, and the Catholic position condemns the intentional killing the fetus and early embryo as intrinsically evil, the actual disagreement between the two on this very complex topic turns out to be very narrow. Both believe that public policy cannot retreat into a privacy-centered moral neutrality with regard to (1) the moral status of the fetus and (2) whether one can kill or refuse to sustain a fetus.  Both also agree, assuming for the sake of argument that a fetus is a person, that no unintended negative effects of making abortion illegal would justify allowing for the legal killing of fetuses. Both reject the American Supreme Court abortion decision Roe v. Wade.  Both agree (again, assuming a fetus is a person) that not only would it be morally wrong to kill a fetus, but that one has a moral duty to support a fetus for nine months with one’s body.  Both reject the idea that viability is a morally significant dividing line.  Both also see a strong logical connection between one’s view of abortion and one’s view of infanticide.  In fact, it is my contention that the wide divergence in their ultimate conclusions comes from a very complex argument involving the distinction that Aristotle and Thomas made between “active” and “passive” potential.  On every issue but that one, Peter Singer looks a lot like John Paul II on abortion.

Singer also criticizes Christianity for being speciesist, but he (along with, to be fair, many Christians) is largely unaware of how complex the tradition is on this topic. For instance, the traditional definition of a person is “an individual substance of a rational nature”—with no mention of biological species as morally significant. Indeed, the Christian tradition makes explicit room for non-human persons (angels and aliens are good examples) and even (in the past) for the concept of human non-persons (human beings who are “slaves by nature”, for instance). Furthermore, the Catechism of the Catholic Church insists that it is seriously morally wrong to needlessly cause non-human animals pain and suffering, and even PETA has used the words of Pope Benedict (now known as “the Green Pope” for his heroic ecological work) criticizing factory farming in their advertisements. This should not be a surprise to anyone who reads Genesis and learns that not only are non-human animals created “good” without any reference to human beings, but that God intended other animals to be our companions, not our food.

The most overwhelming case of all for overlap involves how each understands our duties to the poor. Singer broke on the academic scene with his 1972 article on Famine, Affluence and Morality, and continues to hammer away at the problem of poverty through his continued work (especially his recent book: The Life You Can Save) and personal giving. Modern-day Roman Catholic movements to aid the impoverished (led by the American Bishops via their poverty arm called Catholic Relief Services) are not only absolutely massive in scale and trend-setting among their peer organizations, but their roots go back to the very beginnings of Christianity. Indeed, though Jesus himself rarely speaks of Hell, when he does so it is almost always connected to a failure of one’s duties to the poor, and the early Christian Church largely served as the social welfare system of the ancient world.  Singer himself built on precisely this point when, in the second edition of Practical Ethics, he suggested we give 10% of our resources to those in absolute poverty in part because this was the tithing percentage required by the social welfare mechanism of the age: the Catholic Church. In a shocking indictment of most of us, I suspect, both approaches insist that a selfish failure meet one’s duty to aid the global poor is seriously immoral behavior—akin to something like indirect homicide.

Those who are familiar with ethical theory are probably the most skeptical of conversation between Peter Singer and Christian Ethics—especially because Singer is utilitarian and the Church is a big fan of exceptionless moral norms. But even here the possibilities for overlap are striking and important. The Catholic Church has a teleological ethic which, yes, is ultimately directed toward union with God, but is proximately directed at the flourishing of the “universal common good.”  Even exceptionless moral norms are teleological in nature given that they are at the service of this kind of flourishing. Furthermore, Singer is exploring a new kind of objectivity in his moral theory—even to the point where it is no longer clear that he will remain a preference utilitarian. Indeed, in his latest edition of Practical Ethics he admits that preference utilitarianism is at variance with his moral intuitions about replacement theory (especially of persons), the good of distant future persons, and whether the existence of persons at all is a morally good thing. Especially as Singer moves to include more objectivity into his theory and go beyond preference utilitarianism, he becomes an even better conversation partner for Christian Ethics.

Much more needs to be said to back up these ideas and arguments, of course, and I try to do just that in my new book Peter Singer and Christian Ethics: Beyond Polarization—just released this weekend in the United States by Cambridge University Press. (Available in both paperback and Kindle versions.)  I’m certainly interested in any feedback about the book, so feel free to send me a note (either here or via e-mail:, or join the discussion on the book’s Facebook page.  The book will also serve as the basis of an exchange/debate between Julian Savulescu and myself next Autumn, so if you are in or around Oxford October 17th-19th, come by and see us.

Charlie Camosy

Fordham University (webpage is here)

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4 Responses to Peter Singer and Christian Ethics: Beyond Polarization

  • Richard Williams says:

    “Indeed, if one can somehow show that another’s argument is heading in a Singer-like direction, then for many of us one essentially has reduced it to the absurd.” LOL, and its not absurd to defend an institution that is happy to protect pedophiles? The main difference between Catholics and Singerians is the former only care about the children pre-birth and the latter care about children post-birth.

  • Charles A. Luke says:

    “no unintended negative effects of making abortion illegal would justify allowing for the legal killing of fetuses”

    Doesn’t Singer’s consequentialism entail the exact opposite of this claim? The potential negative consequences are precisely what must be taken into account.

  • charlescamosy says:

    Charles, you’re right of course…I could have said that more precisely and/or clearly. He doesn’t think that any of the proposed bad consequences would (again, assuming for the sake of argument that the fetus is a person) outweigh the mass killing of so many millions of vulnerable persons. I would continue to emphasize, however, that he is in the process of rethinking preference utilitarianism. (Though, as I argue in the book, that might not mean the same thing as rethinking consequentialism.)

  • Anthony Drinkwater says:

    Most of us studying the playing of the double-bass hear the name “Ludwig Wittgenstein” with a mixture of cynicism and dismay. (Tractatus 3.342 makes us feel inadequate,for example, although Tractatus 7 is not entirely incompatible with musical practice). Some of us find, however, that the discussion of games in “Philosophical Investigations” could, in fact, be entirely compatible with recent trends in bass pedagogy.
    My new book, “Philosophy and the double bass – a transcendental doctrine of method” is due to be published shortly. Can I have a plug via the Uehiro blog, please?


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