•  116
    The Metaphysical Status of the Embryo: Some Arguments Revisited
    Journal of Applied Philosophy 25 (4): 263-276. 2008.
    abstract This paper re‐examines some well‐known and commonly accepted arguments for the non‐individuality of the embryo, due mainly to the work of John Harris. The first concerns the alleged non‐differentiation of the embryoblast from the trophoblast. The second concerns monozygotic twinning and the relevance of the primitive streak. The third concerns the totipotency of the cells of the early embryo. I argue that on a proper analysis of both the empirical facts of embryological development, and…Read more
  •  7
    Identity and Discrimination
    Philosophical Books 33 (2): 89-92. 1992.
  •  177
    The doctrine of double effect
    In Timothy O'Connor & Constantine Sandis (eds.), A Companion to the Philosophy of Action, Wiley‐blackwell. pp. 324-330. 2010.
    Few moral theorists would disagree that the fundamental principle of morality – perhaps of practical rationality itself – is “ Do good and avoid evil. ” Yet along with such an uncontroversial principle comes a major question: Can you fulfi l both halves satisfactorily across your life as a moral agent? We all have opportunities to perform acts that do good with no accompanying evil, but these are not as common as we might think. We can avoid evil by doing nothing, but doing nothing implies doing…Read more
  •  164
    The Guise of the Good thesis has received much attention since Anscombe's brief defence in her book Intention. I approach it here from a less common perspective - indirectly, via a theory explaining how it is that moral behaviour is even possible. After setting out how morality requires the employment of a fundamental test, I argue that moral behaviour involves orientation toward the good. Immoral behaviour cannot, however, involve orientation to evil as such, given the theory of evil as privati…Read more
  •  667
    Hylemorphic dualism
    Social Philosophy and Policy 22 (2): 70-99. 2005.
    To the extent that dualism is even taken to be a serious option in contemporary discussions of personal identity and the philosophy of mind, it is almost exclusively either Cartesian dualism or property dualism that is considered. The more traditional dualism defended by Aristotelians and Thomists, what I call hylemorphic dualism, has only received scattered attention. In this essay I set out the main lines of the hylemorphic dualist position, with particular reference to personal identity. Firs…Read more
  •  136
    Editorial introduction
    Ratio 26 (1): 1-2. 2013.
  •  30
    Books Briefly Noted
    with Markus Wörner and Alison Ainley
    International Journal of Philosophical Studies 1 (2): 393-397. 1993.
    Kants Theorie des reinen Geschmacksurteils By Christel Fricke Verlag Walter de Gruyter, 1990 (Quellen und Studien zur Philosophie, 26). Pp. 196. ISBN 3?11?012585?4. DM98.00 The Ontology of Physical Objects By Mark Heller Cambridge University Press, 1990. Pp. iv + 162. ISBN 0?521?38544?X. £25.00. Theory of Knowledge By Keith Lehrer Routledge, 1990. Pp. xii + 212. ISBN 0?415?05407?9. £30.00 hbk. £9.99 pbk. Disciplining Foucault: Feminism, Power and the Body By Jana Sawicki Routledge, 1991. Pp. xii…Read more
  •  119
    Transhumanism is the school of thought that advocates the use of technology to enhance the human species, to the point where some supporters consider that a new species altogether could arise. Even some critics think this at least a technological possibility. Some supporters also believe the emergence of a new, improved, superhuman species raises no special ethical questions. Through an examination of the metaphysics of species, and an analysis of the essence of the human species, I argue that t…Read more
  •  43
    I rejoinder to Ingmar Persson’s reply to my paper ‘The Metaphysical Status of the Embryo: Some Arguments Revisited’. I argue that Persson, having conceded a large part of my case, has still misunderstood or not fully appreciated the force of that case when he claims the arguments I criticize still make it reasonable to think that a human being does not come into existence at fertilization. In addition, his appeal to the totipotency argument as remaining unscathed by my critique does not succeed.
  •  60
    Is there a right to be wrong?
    Philosophy 75 (4): 517-537. 2000.
    Freedom of belief is one of the entrenched values in modern society. Interpreted as the right not to be coerced into believing something, it is surely correct. But most people take it to mean that there is a right to false belief, a right to be wrong. People think that freedom of thought is a good thing, and this must include the freedom to make mistakes. It is also often thought that making mistakes is a life-enhancing and essential part of personal development. I argue that these ideas are fal…Read more
  •  106
    The old scholastic principle of the "convertibility" of being and goodness strikes nearly all moderns as either barely comprehensible or plain false. "Convertible" is a term of art meaning "interchangeable" in respect of predication, where the predicates can be exchanged salva veritate albeit not salva sensu: their referents are, as the maxim goes, really the same albeit conceptually different. The principle seems, at first blush, absurd. Did the scholastics literally mean that every being is go…Read more
  •  23
    Natural law theory says that humans can only live well if they recognise the goods that are natural for humans, and understand how those goods generate the system of practical guidance that we call morality. Natural law is a long-established and flourishing ethical tradition, with roots in Aristotle and Aquinas, which is increasingly recognised as a worthy competitor to Kantianism, utilitarianism and virtue ethics. The new essays in this collection represent the latest thinking - both constructi…Read more
  •  8
    Introduction
    with Timothy Chappell and David S. Oderberg
    Cités 19 123-124. 2004.
    [About the book] Natural law theory says that humans can only live well if they recognise the goods that are natural for humans, and understand how those goods generate the system of practical guidance that we call morality. Natural law is a long-established and flourishing ethical tradition, with roots in Aristotle and Aquinas, which is increasingly recognised as a worthy competitor to Kantianism, utilitarianism and virtue ethics. The new essays in this collection represent the latest thinking …Read more
  •  134
    Further clarity on cooperation and morality
    Journal of Medical Ethics 43 (4): 192-200. 2017.
    I explore the increasingly important issue of cooperation in immoral actions, particularly in connection with healthcare. Conscientious objection, especially as pertains to religious freedom in healthcare, has become a pressing issue in the light of the US Supreme Court judgement inHobby Lobby. Section ‘Moral evaluation using the basic principles of cooperation’ outlines a theory of cooperation inspired by Catholic moral theologians such as those cited by the court. The theory has independent pl…Read more
  •  13
    Response to Buckle
    Journal of Medical Ethics 15 (3): 166-166. 1989.
    This is a brief response to Stephen Buckle's paper 'Biological Processes and Moral Events', Journal of Medical Ethics 14 (1988): 144-7, in which Buckle argues that the continuity of early human development does not preclude there being 'morally significant' events, such as syngamy, that set boundaries for the permissibility of human embryo experimentation. I reply to Buckle that the very continuity at issue does indeed preclude the existence of such 'morally significant' events, and that the Aus…Read more
  •  2
    Ethics and Biotechnology
    Philosophical Books 37 (1): 56-59. 1996.
  •  67
    Conceivability and Possibility (review)
    International Philosophical Quarterly 44 (4): 587-589. 2004.
  •  16
    Meaning
    International Philosophical Quarterly 41 (1): 102-104. 2001.
  •  100
    This paper re-examines some well-known and commonly accepted arguments for the non-individuality of the embryo, due mainly to the work of John Harris. The first concerns the alleged non-differentiation of the embryoblast from the trophoblast. The second concerns monozygotic twinning and the relevance of the primitive streak. The third concerns the totipotency of the cells of the early embryo. I argue that on a proper analysis of both the empirical facts of embryological development, and the meta…Read more
  •  57
    Intelligibility and intensionality
    Acta Analytica 17 (1): 171-178. 2002.
    A common argumentative strategy employed by anti-reductionists involves claiming that one kind of entity cannot be identified with or reduced to a second because what can intelligibly be predicated of one cannot be predicated intelligibly of the other. For instance, it might be argued that mind and brain are not identical because it makes sense to say that minds are rational but it does not make sense to say that brains are rational. The scope and power of this kind of argument — if valid — …Read more