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Don Marquis [45]Jean-Pierre Marquis [33]D. Marquis [7]M. Susan Marquis [6]
Pierre Marquis [5]Donald B. Marquis [3]M. Marquis [2]D. G. Marquis [2]

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Profile: Jean-Pierre Marquis Marquis (Université de Montréal)
  1. Don Marquis (1989). Why Abortion is Immoral. Journal of Philosophy 86 (4):183-202.
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  2.  23
    Don Marquis (2010). Are DCD Donors Dead? Hastings Center Report 40 (3):24-31.
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  3.  90
    Elaine Landry & Jean-Pierre Marquis (2005). Categories in Context: Historical, Foundational, and Philosophical. Philosophia Mathematica 13 (1):1-43.
    The aim of this paper is to put into context the historical, foundational and philosophical significance of category theory. We use our historical investigation to inform the various category-theoretic foundational debates and to point to some common elements found among those who advocate adopting a foundational stance. We then use these elements to argue for the philosophical position that category theory provides a framework for an algebraic in re interpretation of mathematical structuralism. In each context, what we aim to show (...)
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  4. Don Marquis (2007). An Argument That Abortion is Wrong. In Russ Shafer-Landau (ed.), Ethical Theory: An Anthology. Blackwell Pub. 439--450.
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  5.  86
    D. Marquis (2001). Deprivations, Futures and the Wrongness of Killing. Journal of Medical Ethics 27 (6):363-369.
    In my essay, Why abortion is immoral, I criticised discussions of the morality of abortion in which the crucial issue is whether fetuses are human beings or whether fetuses are persons. Both argument strategies are inadequate because they rely on indefensible assumptions. Why should being a human being or being a person make a moral difference? I argued that the correct account of the morality of abortion should be based upon a defensible account of why killing children and adults is (...)
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  6. Don Marquis (2015). The Impossibility of Obtaining Informed Consent to Donation After Circulatory Determination of Death. American Journal of Bioethics 15 (8):25-27.
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  7.  10
    Teressa L. Elliott, Linda M. Marquis & Catherine S. Neal (2013). Business Ethics Perspectives: Faculty Plagiarism and Fraud. [REVIEW] Journal of Business Ethics 112 (1):91-99.
    Faculty plagiarism and fraud are widely documented occurrences but little analysis has been conducted. This article addresses the question of why faculty plagiarism and fraud occurs and suggests approaches on how to develop an environment where faculty misconduct is socially inappropriate. The authors review relevant literature, primarily in business ethics and student cheating, developing action steps that could be applied to higher education. Based upon research in these areas, the authors posit some actions that would be appropriate in higher education (...)
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  8.  18
    Hans van Ditmarsch, Andreas Herzig, Jérôme Lang & Pierre Marquis (2009). Introspective Forgetting. Synthese 169 (2):405-423.
    We model the forgetting of propositional variables in a modal logical context where agents become ignorant and are aware of each others’ or their own resulting ignorance. The resulting logic is sound and complete. It can be compared to variable-forgetting as abstraction from information, wherein agents become unaware of certain variables: by employing elementary results for bisimulation, it follows that beliefs not involving the forgotten atom(s) remain true.
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  9. Justin Marquis (2012). Contra Leiter's Anti-Skeptical Interpretation of Nietzsche's Perspectivism. Croatian Journal of Philosophy 12 (1):69-75.
    Nietzsche, in his work On the Genealogy of Morals, argues that human cognition is analogous in certain significant respects to the perspectival nature of optical vision. Because of this analogy, his account of human cognition is often referred to as perspectivism. Brian Leiter argues that Nietzsche’s use of this optical perspective metaphor undermines interpretations that take perspectivism to have radically skeptical implications. In this paper, I examine Leiter’s argument and show that the considerations he raises based on the optical perspective (...)
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  10. Don Marquis (2007). The Moral-Principle Objection to Human Embryonic Stem Cell Research. Metaphilosophy 38 (2-3):190–206.
    Opponents of human embryonic stem cell (hESC) research claim that such research is incompatible with the moral principle that it is always wrong intentionally to end a human life. In this essay, I discuss how that principle might be revised so that it is subject to as few difficulties as possible. I then argue that even the most defensible version of the principle is compatible with the moral permissibility of hESC research.
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  11. Jean-Pierre Marquis (1995). Category Theory and the Foundations of Mathematics: Philosophical Excavations. Synthese 103 (3):421 - 447.
    The aim of this paper is to clarify the role of category theory in the foundations of mathematics. There is a good deal of confusion surrounding this issue. A standard philosophical strategy in the face of a situation of this kind is to draw various distinctions and in this way show that the confusion rests on divergent conceptions of what the foundations of mathematics ought to be. This is the strategy adopted in the present paper. It is divided into 5 (...)
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  12.  35
    Jean-Pierre Marquis (2006). Categories, Sets and the Nature of Mathematical Entities. In Johan van Benthem, Gerhard Heinzman, M. Rebushi & H. Visser (eds.), The Age of Alternative Logics. Springer 181--192.
  13.  78
    Donald B. Marquis (1991). Four Versions of Double Effect. Journal of Medicine and Philosophy 16 (5):515-544.
    Recent discussions of the doctrine of double effect have contained improved versions of the doctrine not subject to some of the difficulties of earlier versions. There is no longer one doctrine of double effect. This essay evaluates four versions of the doctrine: two formulations of the traditional Catholic doctrine, Joseph Boyle's revision of that doctrine, and Warren Quinn's version of the doctrine. I conclude that all of these versions are flawed. Keywords: double effect, intention, Joseph Boyle, medical ethics, Warren Quinn (...)
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  14. Don Marquis (1985). Harming the Dead. Ethics 96 (1):159-161.
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  15.  46
    Don Marquis (2010). Manninen's Defense of Abortion Rights Is Unsuccessful. American Journal of Bioethics 10 (12):56-57.
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  16.  26
    Jean-Pierre Marquis (2006). A Path to the Epistemology of Mathematics: Homotopy Theory. In Jeremy Gray & Jose Ferreiros (eds.), Architecture of Modern Mathematics. Oxford University Press 239--260.
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  17.  8
    Alexandra Marquis & Rushen Shi (2012). Initial Morphological Learning in Preverbal Infants. Cognition 122 (1):61-66.
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  18.  79
    D. Marquis (2013). Ethics and the Acquisition of Organs. Analysis 73 (2):404-406.
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  19.  1
    Don Marquis (1983). Leaving Therapy to Chance. Hastings Center Report 13 (4):40-47.
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  20. Don Marquis (1996). Review Essay : Life, Death and Dworkin: Ronald Dworkin, Life's Dominion: An Argument About Abortion, Euthanasia, and Individual Freedom (New York: Knopf, 1993. Philosophy and Social Criticism 22 (6):127-131.
  21.  28
    Kenneth Easwaran, Philip Ehrlich, David Ross, Christopher Hitchcock, Peter Spirtes, Roy T. Cook, Jean-Pierre Marquis, Stewart Shapiro & Royt Cook (2010). The Palmer House Hilton Hotel, Chicago, Illinois February 18–20, 2010. Bulletin of Symbolic Logic 16 (3).
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  22.  37
    Don Marquis (1995). Fetuses, Futures and Values. Southwest Philosophy Review 11 (2):263-265.
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  23. Jean-pierre Marquis (1996). Special-Issue Book Review. Philosophia Mathematica 4 (2):202-205.
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  24.  30
    Don Marquis (2005). How Not to Argue That Embryos Lack Full Moral Status. American Journal of Bioethics 5 (6):54-56.
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  25.  40
    Don Marquis (2004). Korcz's Objections to the Future-of-Value Argument. Journal of Social Philosophy 35 (1):56–60.
  26.  61
    Jean-Pierre Marquis, Category Theory. Stanford Encyclopedia of Philosophy.
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  27.  19
    Jean-Pierre Marquis (2009). From a Geometrical Point of View: A Study in the History and Philosophy of Category Theory. Springer.
    A Study of the History and Philosophy of Category Theory Jean-Pierre Marquis. to say that objects are dispensable in geometry. What is claimed is that the specific nature of the objects used is irrelevant. To use the terminology already ...
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  28.  16
    Sylvie Coste-Marquis, Caroline Devred & Pierre Marquis (2009). Handling Controversial Arguments. Journal of Applied Non-Classical Logics 19 (3):311-369.
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  29.  34
    Don Marquis (2011). Don Marquis Replies. Hastings Center Report 41 (2):9-11.
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  30.  83
    Don Marquis (2006). Abortion and the Beginning and End of Human Life. Journal of Law, Medicine & Ethics 34 (1):16-25.
    The doctrine that it is wrong to end the existence of something because it is a human life I call “the standard view.” I argue that attempts by proponents of abortion choice to avoid the implications of the standard view by suggesting that we don't know when life begins or by suggesting that fetuses are only potential lives fail. Nevertheless, opponents of abortion choice should not base their arguments on the standard view, for the standard view is false. I propose (...)
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  31.  17
    Don Marquis (1998). Reiman on Abortion. Journal of Social Philosophy 29 (1):143-145.
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  32.  20
    Jean-pierre Marquis (1997). Abstract Mathematical Tools and Machines for Mathematics. Philosophia Mathematica 5 (3):250-272.
    In this paper, we try to establish that some mathematical theories, like K-theory, homology, cohomology, homotopy theories, spectral sequences, modern Galois theory (in its various applications), representation theory and character theory, etc., should be thought of as (abstract) machines in the same way that there are (concrete) machines in the natural sciences. If this is correct, then many epistemological and ontological issues in the philosophy of mathematics are seen in a different light. We concentrate on one problem which immediately follows (...)
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  33.  69
    D. Marquis (2005). Savulescu's Objections to the Future of Value Argument. Journal of Medical Ethics 31 (2):119-122.
    This essay is a response to Julian Savulescu’s objections to the future of value argument for the immorality of abortion published in the Journal of Medical Ethics, June 2002. Firstly, Savulescu’s claim that the future of value argument has implausible implications is considered. The author argues that the argument does not have these implications. Secondly, properties which, according to Savulescu, could underwrite the wrongness of killing and that are acquired only after implantation, are considered. It is argued that none of (...)
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  34.  13
    E. Christian Brugger, Donald Marquis, Thomas Cavanaugh, James Nelson, Tod Chambers, Lennart Nordenfelt, James Childress, Anders Nordgren, Kai Draper & Fredrik Svenaeus (2006). Lazare Benaroyo Alex John London Universite de Lausanne Carnegie Mellon University Jeff Blustein Jeff McMahan Albert Einstein College of Medicine Rutgers. Theoretical Medicine and Bioethics 27:1.
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  35.  74
    Jean-Pierre Marquis (2010). Mathematical Conceptware: Category Theory: R Alf K R Ö Mer . Tool and Object: A History and Philosophy of Category Theory. Philosophia Mathematica 18 (2):235-246.
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  36.  50
    Don Marquis (2002). Does Metaphysics Have Implications for the Morality of Abortion? Southwest Philosophy Review 18 (1):73-78.
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  37.  25
    Don Marquis, Ron Stephens & R. J. Levine (1988). The Doctor's Unproven Belief and the Subject's Informed Choice: Another Commentary. IRB: Ethics & Human Research 11 (3):8-11.
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  38.  45
    Jean-Pierre Marquis (2013). Mathematical Forms and Forms of Mathematics: Leaving the Shores of Extensional Mathematics. Synthese 190 (12):2141-2164.
    In this paper, I introduce the idea that some important parts of contemporary pure mathematics are moving away from what I call the extensional point of view. More specifically, these fields are based on criteria of identity that are not extensional. After presenting a few cases, I concentrate on homotopy theory where the situation is particularly clear. Moreover, homotopy types are arguably fundamental entities of geometry, thus of a large portion of mathematics, and potentially to all mathematics, at least according (...)
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  39.  12
    M. Susan Marquis, Melinda Beeuwkes Buntin, José J. Escarce, Kanika Kapur & Thomas A. Louis (2005). Is the Individual Market More Than a Bridge Market? An Analysis of Disenrollment Decisions. Inquiry 42 (4):381-396.
  40.  2
    Sophie Doyon, Mélissa Perreault, Christopher Marquis, Josianne Gauthier, Denis Lebel, Benoit Bailey, Johanne Collin & Jean‐François Bussières (2009). Quantitative Evaluation of a Clinical Intervention Aimed at Changing Prescriber Behaviour in Response to New Guidelines. Journal of Evaluation in Clinical Practice 15 (6):1111-1117.
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  41.  60
    Don Marquis (2010). Review of Christopher Kaczor, The Ethics of Abortion: Women's Rights, Human Life, and the Question of Justice. [REVIEW] Notre Dame Philosophical Reviews 2010 (11).
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  42.  43
    Jean-Pierre Marquis (2012). Categorical Foundations of Mathematics. Review of Symbolic Logic.
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  43.  5
    Stephen H. Long & M. Susan Marquis (2002). Participation in a Public Insurance Program: Subsidies, Crowd-Out, and Adverse Selection. Inquiry 39 (3):243-257.
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  44.  54
    Don Marquis (2003). Jeff McMahan, The Ethics of Killing: Problems at the Margins of Life:The Ethics of Killing: Problems at the Margins of Life. Ethics 113 (2):437-440.
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  45.  10
    Jérôme Lang & Pierre Marquis (2001). Removing Inconsistencies in Assumption-Based Theories Through Knowledge-Gathering Actions. Studia Logica 67 (2):179-214.
    In this paper, the problem of purifying an assumption-based theory KB, i.e., identifying the right extension of KB using knowledge-gathering actions (tests), is addressed. Assumptions are just normal defaults without prerequisite. Each assumption represents all the information conveyed by an agent, and every agent is associated with a (possibly empty) set of tests. Through the execution of tests, the epistemic status of assumptions can change from "plausible" to "certainly true", "certainly false" or "irrelevant", and the KB must be revised so (...)
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  46. M. Susan Marquis & Stephen H. Long (2001). Effects of “Second Generation” Small Group Health Insurance Market Reforms, 1993 to 1997. Inquiry 38 (4):365-380.
  47.  25
    Don Marquis (1986). An Argument That All Prerandomized Clinical Trials Are Unethical. Journal of Medicine and Philosophy 11 (4):367-383.
    Conversion of slowly accruing conventionally randomized studies to a prerandomized design has apparently been successful in increasing accrual enough so that some of these studies can be completed. Ellenberg (1984) has pointed out some of the ethical dangers of prerandomization. This paper argues that prerandomization must be either unsuccessful or unethical: either conversion to prerandomization will result in no significant increase in the rate of completion of the study or a significant increase in accrual rate will be achieved either at (...)
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  48.  22
    Jean-Pierre Marquis (1991). Approximations and Truth Spaces. Journal of Philosophical Logic 20 (4):375 - 401.
    Approximations form an essential part of scientific activity and they come in different forms: conceptual approximations (simplifications in models), mathematical approximations of various types (e.g. linear equations instead of non-linear ones, computational approximations), experimental approximations due to limitations of the instruments and so on and so forth. In this paper, we will consider one type of approximation, namely numerical approximations involved in the comparison of two results, be they experimental or theoretical. Our goal is to lay down the conceptual and (...)
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  49.  19
    Don Marquis (2013). Does Potentiality Have a Use in Bioethics? American Journal of Bioethics 13 (1):32-33.
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  50.  6
    Don Marquis, How to Resolve an Ethical Dilemma Concerning Randomized Clinical Trials.
    An apparent ethical dilemma arises when physicians consider enrolling their patients in randomized clinical trials. Suppose that a randomized clinical trial comparing two treatments is in progress, and a physician has an opinion about which treatment is better. The physician has a duty to promote the patient's best medical interests and therefore seems to be obliged to advise the patient to receive the treatment that the physician prefers. This duty creates a barrier to the enrollment of patients in randomized clinical (...)
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