W Deklaracji o przerywaniu ciąży z 1974, Kościół Katolicki argumentuje, że zygota jest człowiekiem ponieważ posiada ludzki genotyp. Artykuł przedstawia logiczną analizę tej argumentacji. Pokazuje, że argumentacja ta jest w dużym stopniu wadliwa. Tomizm pełni tu funkcję uprawo-mocnienia. Entymematyczne założenia tomistyczne są niezbędne, by w ogóle możliwe było przejście od przesłanek do wniosku. Okazuje się ponadto, że argumentacja ta zakłada tomistyczną interpretację pojęć biologicznych, która jest niezgodna ze współczesną wiedzą biologiczną. Twierdzenie zawarte w Deklaracji nie zostało więc skutecznie uargumentowane na (...) gruncie biologii, a wręcz wydaje się, że biologia je wyklucza. Jest ono możliwe jedynie jako twierdzenie metafizyczne i wyłącznie na gruncie pewnych metafizyk. (shrink)

1. Overview -/- 1.1 Main Divisions When, if ever, is it morally permissible to end the life of a human embryo or fetus, and why? As regards the first of these questions, there are extreme anti-abortion views, according to which abortion is prima facie seriously wrong from conception onwards – or at least shortly thereafter; there are extreme permissibility views, according to which abortion is always permissible in itself; and there are moderate views, according to which abortion is sometimes permissible, (...) and sometimes not. -/- Moderate views appeal to a variety of considerations in support of the view that abortion is sometimes justified, but these fall into four main categories. First, there are cases where the developing human is seriously defective in some way – perhaps such that it will not have a life that is worth living. Secondly, there are cases where continuation of pregnancy would involve serious risks to the life or health of the woman. Thirdly, there are moderate positions according to which the developing human initially does not have serious moral status, or a right to life, but acquires such status at some point before birth. Finally, it is often held that abortion is justified in the case of rape. -/- With the exception of the last consideration, moderate views assume that the moral status of the developing human is crucial with respect to the permissibility of abortion. Moreover, this is a natural assumption that was shared by all sides until the publication in 1971 of Judith Jarvis Thomson’s article “A Defense of Abortion,” in which she argued that abortion is permissible even if one assumes, for the sake of argument, that human embryos and fetuses have a right to life. Thus we have one of the great divides in the philosophical discussion of abortion: Is the moral status of the developing human generally decisive with regard to the moral permissibility of abortion or not? -/- 1.2 The Moral Status of the Developing Human: Thomson and Boonin Thomson’s article evoked many critical responses, along with some defenses, which I have described elsewhere (2013; “Thomson’s Attempt to Defend Abortion in General”). Crucial, however, is David Boonin’s defense (2003), which contains responses to all of the important objections directed against the attempt to show that one can defend abortion while granting that human embryos and fetuses have a right to life fully on a par with that of normal adult human beings. -/- Boonin’s impressive efforts notwithstanding, I do not think that this way of defending an extreme permissibility view is successful. The crucial issue is whether it is morally permissible intentionally to bring into existence an entity with a right to life in a situation where one knows that it will not survive without one’s assistance, and then to refrain from providing that assistance. An especially forceful way of arguing that this is not permissible is found in an article by Richard Langer (1993, 351-2), who argues that if this were permissible, it would follow not only that abortion was justified, but also that it is permissible to allow one’s children to die, some years after birth, simply because one no longer wishes to care for them. -/- 1.3 Moderate Views Moderate positions on abortion raise a number of issues that, for reasons of space, I cannot address here. Some of these depend on the issue of the moral status of the developing human, and defending a moderate view requires showing that both extreme anti-abortion and extreme moral permissibility views concerning the moral status of humans before birth are incorrect. I have argued elsewhere (1983, 285-302, and 2009, 59-63) that the prospects of doing this are not promising. -/- As regards permissibility in the case of rape, everything depends upon whether, as Thomson contends (1971), there is no obligation to be a good Samaritan, rather than merely a minimally decent one, and so no obligation for a woman to remain pregnant to save the life of a being that she was not responsible for bringing into existence. Finally, on the one hand, in cases where the woman will die if an abortion is not performed, virtually all moral philosophers, with the exception of those who embrace the moral view advanced by the Catholic Church in encyclicals by Pope Pius XI (1930) and Pope Paul VI (1968), agree that abortion is morally permissible, while, on the other hand, if the situation is one where there is only some risk that the woman will die if an abortion is not performed, or where the threat is not to the woman’s life, but only to her health, then the situation does seem clear-cut if one assumes that the embryo or fetus has a right to life. -/- 1.4 Extreme Anti-Abortion Views Very different arguments are offered for the view that abortion is in itself never permissible. First of all, in popular discussions, appeal is frequently made to the mere fact of membership in the biologically defined species Homo sapiens, but among those who are philosophically knowledgeable, this line of argument is almost invariably rejected, for reasons that I have set out elsewhere (Tooley, 2009, 21-35). -/- Secondly, appeal is also made to the idea that humans have immaterial minds, or souls – for example, by Stephen Schwartz (1990), J. P. Moreland and Scott B. Rae (2000), Norman Ford (2002), and Francis J. Beckwith, (2005). The postulation of immaterial minds or souls is, however, open to strong objections, since there is excellent evidence that human psychological powers have their categorical bases in neural structures, rather than in an immaterial substance (Tooley, 2009, 15-19). In addition, the postulation of an immaterial soul, conceived of along Thomistic lines, is on a collision course with biology, since such an immaterial soul is held to govern a human’s life processes and biological development. -/- Thirdly, there is the ‘substantial identity’ argument, advanced for example by Patrick Lee (2004), and which claims that an entity possesses a right to life by virtue of the type of substance it is. This view is exposed to a number of strong objections, however, among them the fact that it leads to the unacceptable consequence that a human that has suffered upper brain death still has a right to life (Tooley, 2009, 51-9). -/- The upshot is that most philosophers do not find any of the preceding three lines of argument for an extreme anti-abortion position promising. The focus, accordingly, has been elsewhere – namely, on arguments claiming that human embryos and fetuses have serious moral status, or a right to life, because they have the potentiality for developing those psychological capacities – for thought, self-consciousness, rationality, and so on – that seem clearly relevant to a being’s moral status. -/- In what follows, then, I shall confine my discussion to what seems to me the most crucial issue bearing upon the moral status of abortion, namely, that between, on the one hand, a potentiality account of moral status, and, on the other, the type of approach most commonly appealed to in support of an extreme permissibility position on abortion, namely, a personhood account of the right to life. -/- One of the earliest defenders of the view that potentialities give something a right to life was Jim Stone in his article, “Why Potentiality Matters,” where Stone argues for the conclusion, “we have a prima facie duty not to deprive them of the conscious goods which it is their nature to realize” (1987, 821). Stone’s discussion, however, attracted much less attention than an article published two years later by Don Marquis, entitled “Why Abortion is Immoral.” The latter is one of the most interesting articles on abortion, as well as one of the most discussed––and deservedly so. In what follows, then, I shall focus upon it. -/- My discussion is organized as follows. In section 2, I summarize Marquis’s account of the wrongness of killing. Then, in section 3, I set out an alternative account, one in which the concept of a neo-Lockean person is central. Sections 4, 5, and 6 are then devoted to criticisms of Marquis’s approach, all of which also support the alternative, rights-based, neo-Lockean personhood account. (shrink)

I consider the argument, thought to clinch the moral case for use of a human embryo solely as a means, that only a human individual can be a person, because it can happen at any time before formation of the primitive streak that an embryo splits into monozygotic twins, no embryo in which the primitive streak has not formed is a human individual, and therefore no embryo in which the primitive streak has not formed is a person. I explore the (...) following proffered arguments for : indivisibility is a necessary condition of individuality, nonidentity of an embryo with successor twins impugns the embryo’s individuality, and totipotency of an embryo’s constituents is inconsistent with the embryo’s being a human individual. These arguments are tested and found wanting; so too is an alternative to , the argument that indivisibility is intrinsic to personhood. Whereupon is unsustained. In search of ways to rehabilitate the nonindividuation argument, I canvass alternative metaphysical views and inquire further into biological individuality, but find that the argument cannot be saved. I conclude by analyzing where this leaves matters concerning the morality of embryo use. (shrink)

I consider the argument, thought to clinch the moral case for use of a human embryo solely as a means, that only a human individual can be a person, because it can happen at any time before formation of the primitive streak that an embryo splits into monozygotic twins, no embryo in which the primitive streak has not formed is a human individual, and therefore no embryo in which the primitive streak has not formed is a person. I explore the (...) following proffered arguments for : indivisibility is a necessary condition of individuality, nonidentity of an embryo with successor twins impugns the embryo’s individuality, and totipotency of an embryo’s constituents is inconsistent with the embryo’s being a human individual. These arguments are tested and found wanting; so too is an alternative to, the argument that indivisibility is intrinsic to personhood. Whereupon is unsustained. In search of ways to rehabilitate the nonindividuation argument, I canvass alternative metaphysical views and inquire further into biological individuality, but find that the argument cannot be saved. I conclude by analyzing where this leaves matters concerning the morality of embryo use. (shrink)

In this paper I have not, of course, presented all the embryological data that can be collected from the Talmudic and Midrashic literature. More details can be found in Julius Preuss' classical work on biblical and talmudic medicine, now available in Fred Rosner's English translation and in a French M.D. thesis by Martine Michel.75 I also did not present any data on teratology, and did not deal with the very rich Jewish mystical lore, the Cabbala. But a few comments are (...) in order here about the material on embryology.There are very few original ideas in the Talmudic corpus on embryology, but it is obvious that the Sages were well aware of the Greek and Roman theories on embryology.The fact that the Talmud is a compilation that was built up slowly, during several centuries, explains why the information recorded in it cannot be ascribed solely to one school of thought or one clear-cut influence.When a definite problem was difficult to solve because there were many different theories about it, the Sages based their opinion on a famous experiment that seemed to offer guarantees of validity. This was the case with the controversial problem of the formation of the embryo and its sexual differentiation, where the Sages made use of an experiment allegedly initiated by Cleopatra.The Sages were ready to discuss scientific problems with non-Jewish scholars and even to accept their arguments. This was the case with the important topic of the time of the entry of the soul into the embryo. But the legal conclusions drawn from the Sages' opinion were not consistent with those declared by Churth Fathers such as Tertullian. Embryotomy, for instance, was permitted by Jewish law.Wide interest, scholarly discussions, suggestive descriptions and readiness to inquire and to obtain detailed information characterized the Talmudic discussions of embryology.In conclusion, I quote a Talmudic text that reviews the whole process of embryological development through the sequence of prayers of a faithful Jew who learns that his wife is expecting a baby.The first three days, [he should pray to the Lord] that the seed should not putrefy.From the third to the fortieth day: that the child should be a male.From the fortieth day to the third month: that there should not occur any superfetation, which could lead the first embryo to be a fetus compressus.From the third to the sixth month: that an abortion should not occur.From the sixth to the ninth month: that the birth should be without problems.76. (shrink)

In addressing bioethical issues at the beginning of human life, such as abortion, human embryonic stem cell research, and therapeutic cloning, a primary concern is to establish when a developing human embryo or fetus can be considered a “person”; for it is typically held that only persons are the subjects of moral rights, such as a “right to life.” The 13th century philosopher and theologian Thomas Aquinas defines a person as “an individual substance of a rational nature” (ST Ia.29.1); he (...) further asserts that all human beings are persons (ST Ia.16.12 ad 1), but that an embryo or fetus is not a human being until its body is informed by a “rational soul.” Aquinas’s account of human embryogenesis has been generally rejected today due to its dependence upon medieval biological information. A number of scholars, however, have attempted to combine Aquinas’s basic metaphysical account of human nature with current embryological data to develop a contemporary Thomistic account of a human being’s beginning. (shrink)

This article is a response by the author of Defending Life, Francis Beckwith, to Kevin Corcoran’s critical review of that book. In his review Corcoran maintains that Beckwith provides only a “typical” genetic code argument for the zygote’s individual humanity, and that Beckwith fails to show that there exists an individual human organism that subsists from conception and develops into a mature version of itself. Beckwith argues that Corcoran is mistaken on both counts.

Over the last several decades many abortion advocates have attempted to spread confusion and doubt concerning the beginnings of human life. A particularly cynical strategy has involved invoking the authority historical thinkers, especially Doctors of the Church, to support the claim that (at least) early abortion does not constitute homicide because the early embryo is not yet fully human. Anyone familiar with context of these historical thinkers should realize that their specific judgments regarding abortion are now obsolete in virtue of (...) their primitive scientific understanding of embryology. In what follows, I summarize the Aristotelian embryology that explains why these historical thinkers held the views that they did. I then explore how we should best understand their broader ethical views in light of our vastly superior contemporary knowledge of human embryology. Unsurprisingly, it turns out that if we apply the contemporary empirical findings of embryology the very same metaphysical and ethical principles informing the thinking of the historical figures supports the prolife position. (shrink)

Abortion remains a highly controversial issue in many countries and subject to intense public debate. The aim of this chapter is to summarize the most prominent assumptions and arguments concerning the moral and legal dimensions of abortion on which this debate rests. Where the moral justifiability of abortion is concerned, this chapter focuses on arguments relating to the moral status of the fetus or embryo, the notion of personhood, the biological development of the embryo or fetus, and the moral relevance (...) of specific points in the developmental process. In terms of the legal aspects, we consider concepts and principles invoked at law, principally, the rights of pregnant women and the medical concept of viability. For each moral and legal position in the abortion debate, we provide an overview of the principal assumptions and arguments and acknowledge the main criticisms. (shrink)

‘When did I, a human person, begin to exist?’ In developing an answer to this question, I utilize a Thomistic framework, which holds that the human person is a composite of a biological organism and an intellective soul. Eric Olson and Norman Ford both argue that the beginning of an individual human biological organism occurs at the moment when implantation of the zygote in the uterus occurs and the ‘primitive streak’ begins to form. Prior to this point, there does not (...) exist an individual human organism, but a cluster of biological cells which has the potential to split and develop as one or more separate human organisms (identical twinning). Ensoulment (the instantiation of a human intellective soul in biological matter) does not occur until the point of implantation. This conception of the beginning of human personhood has moral implications concerning the status of pre‐implantation biological cell clusters. A new understanding of the beginning of human personhood entails a new understanding of the morality of certain medical procedures which have a direct affect on these cell clusters which contain human DNA. Such procedures discussed in this article are embryonic stem cell research, in vitro fertilization, procured abortion, and the use of abortifacient contraceptives. (shrink)

In a poem setting forth the way things are in nature, it is fitting for Lucretius to address, among many other phenomena, human conception and embryonic determination. With an eye toward ethics, Lucretius demonstrates how sexual reproduction at the seminal level can be explained by Epicurean atomism. In this paper, I am concerned with the biological ‘how’ of conception as explained inDe Rerum Natura(=DRN) but also with the ethical ‘therefore’ for Lucretius’ readership and (over)estimations of male autonomy. For modern audiences (...) with a basic grasp of procreation that includes sperm supplied by a male and egg supplied by a female, encountering Lucretius’ verses on women contributing semen (semina) to the process of conception can be surprising (4.1209–62). The idea of female semen may give us pause as we calibrate it with our understanding of eggs and ovulation, but Lucretius, in his time, was not advancing some novel theory. Wading into established debates on male-only or joint male-female semen production and gendered insemination (that is, who produces semen and whose semen is active at conception), Lucretius sides with those promulgating mutuality for both questions (for example Democritus [DK 24 A13]) and rejects Aristotle's representative exclusivist claim of male activity vs female passivity (τὸ ἄρρεν ἐστὶν ὡς κινοῦν καὶ ποιοῦν, τὸ δὲ θῆλυ ὡς παθητικόν,Gen. an.729a28–30; cf. 726a30–6). That is to say, a sexually mature female, like her male counterpart, emits semen that has determining potency in the formation of a human embryo (Lucr. 4.1209–62). Although the discharge and activity of female semen is the focus of this paper, my investigation is not aQuellenforschungor historical survey of Greco-Roman ideas about women's contributions to insemination and fertility, since others have treated these matters extensively. I concentrate rather on how Lucretius employs the concept of female semen in terms of his poetics in Book 4 and what I see as an ethical argument against the domineering nature of Roman masculinity. The problem of female semen, from the point of view of Lucretius’ Roman male audience, is that it is potentially costly to men because it rivals and threatens their status from the physiological to the discursive level. Iain Lonie broaches the same issue from Greek perspectives. (shrink)

It has been argued that killing persons is wrong because it deprives them of future experiences. Some opponents of abortion argue that the same apples to potential persons—fetuses, zygotes, embryos, etc.—so that to destroy them is as wrong as killing a person. Phil Gosselin rejects this position, employing the reductio argument that if it were so, contraception would be equally wrong, since it destroys potential persons that are gamete pairs. I argue in this paper that Gosselin’s position on the ontological (...) status of the “victim” of contraception, the gamete pair, is flawed in such a way that his conclusion that there is no morally relevant difference between what is destroyed by abortion and what is destroyed by contraception fails. A gamete pair is ontologically different from a fetus; “victims” of contraception and victims of abortion are not significantly analogous, and the reductio that depends upon their similarity for its force is unsuccessful. (shrink)

It has been argued that killing persons is wrong because it deprives them of future experiences. Some opponents of abortion argue that the same apples to potential persons—fetuses, zygotes, embryos, etc.—so that to destroy them is as wrong as killing a person. Phil Gosselin rejects this position, employing the reductio argument that if it were so, contraception would be equally wrong, since it destroys potential persons that are gamete pairs. I argue in this paper that Gosselin’s position on the ontological (...) status of the “victim” of contraception, the gamete pair, is flawed in such a way that his conclusion that there is no morally relevant difference between what is destroyed by abortion and what is destroyed by contraception fails. A gamete pair is ontologically different from a fetus; “victims” of contraception and victims of abortion are not significantly analogous, and the reductio that depends upon their similarity for its force is unsuccessful. (shrink)

In various places we have defended the position that a new human organism, that is, an individual member of the human species, comes to be at fertilization, the union of the spermatozoon and the oocyte. This individual organism, during the ordinary course of embryological development, remains the same individual and does not undergo any further substantial change, unless monozygotic twinning, or some form of chimerism occurs. Recently, in this Journal Jason Morris has challenged our position, claiming that recent findings in (...) reproductive and stem cell biology have falsified our view. He objects to our claim that a discernible substantial change occurs at conception, giving rise to the existence of a new individual of the human species. In addition, he objects to our claim that the embryo is an individual, a unified whole that persists through various changes, and thus something other than a mere aggregate of cells. Morris raises a number of objections to these claims. However, we will show that his arguments overlook key data and confuse biological, metaphysical, and ethical questions. As a result, his attempts to rebut our arguments fail. (shrink)

A number of philosophers maintain that the destruction of an embryo in the first 2 weeks after fertilization is not morally problematic as it is metaphysically impossible for any human organism to then have existed. We contend that the typical adult human organism was once a zygote so there is no metaphysical shortcut to justify early abortion. We show that five arguments against human organisms ever having been zygotes fail. All of the arguments have to do with one variant or (...) another of the zygote or early embryo dividing. They do not provide any reason to believe that since some adult organisms are not identical to zygotes due to earlier divisions, none could have been. (shrink)

Alfred Mele’s zygote argument for incompatibilism is based on a case involving an agent in a deterministic world whose entire life is planned by someone else. Mele’s contention is that Ernie (the agent) is unfree and that normal determined agents are relevantly similar to him with regards to free will. In this paper, I examine four different ways of understanding this argument and then criticize each interpretation. I then extend my criticism to manipulation arguments in general. I conclude that the (...) zygote argument is no threat to compatibilism. (shrink)

In contemporary discussions of abortion, both sides argue well-worn positions, particularly concerning the question, When does human life begin? Though often invoked by the Catholic Church for support, Thomas Aquinas in fact held that human life begins after conception, not at the moment of union. But his overall thinking on questions of how humans come into being, and cease to be, is more subtle than either side in this polarized debate imagines. Fabrizio Amerini--an internationally renowned scholar of medieval philosophy--does justice (...) to Aquinas's views on these controversial issues. Some pro-life proponents hold that Aquinas's position is simply due to faulty biological knowledge, and if he knew what we know today about embryology, he would agree that human life begins at conception. Others argue that nothing Aquinas could learn from modern biology would have changed his mind. Amerini follows the twists and turns of Aquinas's thinking to reach a nuanced and detailed solution in the final chapters that will unsettle familiar assumptions and arguments. Systematically examining all the pertinent texts and placing each in historical context, Amerini provides an accurate reconstruction of Aquinas's account of the beginning and end of human life and assesses its bioethical implications for today. This major contribution is available to an English-speaking audience through translation by Mark Henninger, himself a noted scholar of medieval philosophy. (shrink)

The argument from potentiality for embryo protection relies on the assumption of a specific developmental potential of human embryos: as human embryos under normal conditions naturally developing into beings whose strong moral status is uncontroversial, namely into human persons, they likewise enjoy strong moral status. In my paper, I endeavour to spell out the ontological foundations of the argument from potentiality and to discuss them critically in the light of new empirical findings in embryology. Particular attention is hereby paid (...) to recent attempts to analyse the relevant notion of potentiality in terms of dispositions possessed by human embryos. I argue that, putting aside inappropriate essentialist speculations, there is no straightforward disposition of an embryo to become a person; such a disposition, if any, being rather successively generated in a multi-factored, highly context-sensitive process of biological development. (shrink)

Skene and Parker1 raise a number of concerns about religious doctrine unduly influencing law and public policy through amicus curiae contributions to civil litigations or direct lobbying of politicians. Oakley2 picks this up in the same issue with an emphasis on the Roman Catholic Church’s interest in preventing the destruction of embryos for embryonic stem cell research. Skene, Parker, and Oakley seem to be concerned mostly with religious views having undue influence on public policy. My concern is the negative effect (...) that such Church influenced public policy may have on the progress of the biomedical research that is itself foundational to the debate. Oakley seems to be particularly incensed that, as he puts it: “Those who support a total ban on embryonic stem cell research sometimes talk as if theirs are the only views based on moral principle”.2 What seems to be at issue here though are not the moral principles of the sanctity and dignity of human life, but the application of those moral principles to biomedical research.The Roman Catholic Church has historically defended the sanctity and dignity of human life to varying degrees at different times. Human life for much of the past 2000 years was defined by the Church as the presence of the soul, which was thought at different times to appear at various different stages during development. Only recently, with the advent of modern biology, has the Roman Catholic Church shifted its position to claim that the fertilised egg also qualifies as the right sort of human life.3 It should be noted that this doctrinal change was fundamentally driven by developments in our understanding of embryology and not the process of ensoulment.The Church’s current position on the embryo is thus based not solely on Church doctrine but also on …. (shrink)

Catholic ethicists faithful to the magisterium of the Church are currently divided on the permissibility of using methotrexate to treat ectopic pregnancies. This paper examines the defenses of Rev. Albert Moraczewski, OP, and Christopher Kaczor, who argue that its use is morally permissible, in an attempt to demonstrate that methotrexate constitutes a direct abortion by virtue of its object. Specifically, the paper challenges the claims that methotrexate is aimed at inhibiting pathological tissues, that the trophoblast is not an organ of (...) the embryo, and that direct removal of a nonviable fetus is not a direct abortion. National Catholic Bioethics Quarterly 14.4 : 625–635. (shrink)

Determining the personhood of the human embryo is critical to advancing an informed and reasoned public policy debate over abortion and human embryo research. Many defenders of life—the Vatican included—have withheld recognition of the personhood of the embryo in order to avoid making an explicitly philosophical statement. This essay considers current embryological evidence from a philosophical (i.e., Aristotelian-Thomistic) point of view. This essay also addresses certain contemporary and antithetical philosophical biases. A demonstration then shows that the embryo is the fully (...) formed human person’s initial stage of development consisting of a rational soul that possesses the power of intellect and a commensurate body that is capable of developing into the fully formed human person. National Catholic Bioethics Quarterly 9.4 (Winter 2009): 689–693. (shrink)

Abortion and embryo destruction prevent a future of value, but that does not make them wrong.Abortion involves the killing of a fetus. One bad thing about killing a fetus is that the fetus is deprived of a future of value. Think of all the things which make your life good and worth living: understanding the world, seeing your children grow into independent, intelligent, and happy people, watching a sunset over the hills, enjoying good times with friends. By killing the fetus, (...) we are depriving it of a future life likely to contain these things. And more. The fetus would likely grow to be a person who would have contributed to the world in many ways—bringing joy to its parents, happiness, and friendship to many. That person would have laboured for society and perhaps even discovered a cure for cancer or developed the first bionic eye.The loss of these possible futures is bad. It makes the killing of a fetus wrong. This is Don Marquis's argument against abortion.1 It is one of the best arguments against abortion which does not rest on theological premises.Another way of putting this is to say that we have a good reason not to kill a fetus. A reason for acting is a fact or circumstance forming a sufficient justification for an action. Or in this case, not to perform an action. We have all sorts of reasons for action. Our reasons often conflict. I may have a good reason to visit my mother and a good reason to take my children to the park. What we have most reason to do is what it is right to do. It is what we should do. If we have most reason not to perform an act, …. (shrink)

Um argumento recorrente contra a liberalização do aborto parte do pressuposto de que, desde o momento da fertilização, seres humanos são indivíduos (no sentido de serem algo que necessariamente ocorre em uma entidade apenas). Nesse artigo, argumento que esse não é um caso a partir da possibilidade de geminação monozigótica e do fato de identidades serem necessárias. Defendo as premissas do argumento e discuto as possíveis interpretações de sua conclusão. Argumento que a interpretação completa da conclusão desse argumento está em (...) concordância com a conclusão de um argumento semelhante, que parte de noção de organismo. -/- ENGLISH: A common pro-life argument assumes that humans are individuals (in the sense that they necessarily occur in one entity only) from the moment of fertilization. In this paper, argue that this is not the case because of the possibility of monozygotic twinning and the necessity of identities. I will defend the premises of the argument and discuss the possible interpretations of its conclusion. I argue that the correct interpretation of the conclusion of this argument is in agreement with the conclusion of a similar arguments from the notion of organism. (shrink)

In addressing bioethical issues at the beginning of human life, such as abortion, in vitro fertilization, and embryonic stem cell research, one primary concern regards establishing when a developing human embryo or fetus can be considered a person. Thomas Aquinas argues that an embryo or fetus is not a human person until its body is informed by a rational soul. Aquinas's explicit account of human embryogenesis has been generally rejected by contemporary scholars due to its dependence upon medieval biological data, (...) which has been far surpassed by current scientific research. A number of scholars, however, have attempted to combine Aquinas's basic metaphysical account of human nature with current embryological data to develop a contemporary Thomistic account of a human person's beginning. In this article, I discuss two recent interpretations in which it is argued that a human person does not begin to exist until a fetus has developed a functioning cerebral cortex. (shrink)

This book provides extensive and critical engagement with some of the most recent and compelling arguments favoring abortion choice. It features original essays from leading and emerging philosophers, bioethicists and medical professionals that present philosophically sophisticated and novel arguments against abortion choice. The chapters in this book are divided into three thematic sections. The first set of essays focuses primarily on unborn human individuals--zygotes, embryos and fetuses. In these chapters it is argued, for example, that human organisms begin to exist (...) at conception and that zygotes, embryos and fetuses are persons. These chapters also explore questions about whether or not zygotes, embryos and fetuses are part of their mothers' bodies. The second set of essays focuses primarily on elective abortion and the debates surrounding it. These chapters consider whether or not opponents of abortion are commonly hypocritical, how opponents of abortion should think about adoption, how emerging technologies may affect the current debate and whether or not those participating in the debate should rely on analogies to support their case. Finally, the third set of essays shifts focus from the legal and moral status of elective abortion to its place in medical practice. In these chapters it is argued that elective abortion embodies a kind of ableism, and that elective abortion is medically unnecessary, harmful to women's mental health and that telemedicine abortion poses significant risks to women's health. Agency, Pregnancy and Persons offers an up-to-date examination of unborn human beings, the debates surrounding elective abortion and the place of elective abortion within medical practice. It will be of interest to medical professionals and those who work in philosophy, bioethics and medical ethics alike. (shrink)

This paper is an analysis of the relationship of social ethics and bioethics in Roman Catholic theology. The argument of the paper is that the character of both Catholic moral theology and ecclesiology shape the broadly defined interest of the church in bioethics. The paper examines the common elements of social ethics and bioethics in Catholic teaching, describes how ecclesiology shapes Catholic public policy and uses the examples of abortion and health care to illustrate the relationship of Catholic social thought (...) and bioethics. In developing the relationship of these two dimensions of Catholic moral argument the article highlights how the appeal to natural law categories differs in social ethics and bioethics and how the two topics are received differently in the theological community. It also seeks to illustrate how the premises of Catholic social ethics remain central to public positions taken on bioethics. Keywords: ecclesiology, moral theology, natural law, social ethics CiteULike Connotea Del.icio.us What's this? (shrink)

Hominization theory speculates on the process and chronology of a human embryo’s ensoulment. Aristotle, a key ancient Greek thinker, presented his own hominization theory based on his hylemorphic metaphysics and pioneering researches in embryology. Thomas Aquinas, a medieval philosopher and theologian, built his Christian and Catholic hominization theory on the foundations laid down by Aristotle. The contemporary Roman Catholic Church, with its own prolife, anti-abortion and anticontraception agenda, modified the Aristotelian and Thomistic hominization theories by allegedly benchmarking on recent (...) developments in human embryology. This paper uses the archeological and genealogical methods, as developed by the French poststructuralist and postmodernist philosopher Michel Foucault, in reexamining these three hominization theories as discourses, in comparing and contrasting their epistemic contexts, and in peering into their respective genealogies. Contrary to common assumptions, these three hominization theories have very few elements in common and are actually divergent. The underpinning intention of this paper is to demonstrate the strengths and weaknesses of the contemporary Roman Catholic Church’s hominization theory. (shrink)

A fresh explication of the Thomist justification of self-defense casts off the hobbles of the principle of double effects to find a more secure footing in the historical development of subjective natural rights by medieval jurists, and a straight-forward application to the latent threat of death in childbirth posed by non-consensual pregnancy. By articulating the implicit Thomistic right to defensive abortion in terms of conditional rights bestowed in Creation as correlative to particular natural law duties, justly proportionate limits to defensive (...) abortion are identified, and balanced against the forfeited or reserved natural rights variously imputed to conceptus and embryo in non-consensual pregnancies. Subsequently, the varieties of involuntary consent are examined from a Thomist perspective with a view to their relevance in justifying recourse to a rehabilitated practice of defensive abortion when free and full consent to impregnation and childbirth is absent. (shrink)

Several states have recently adopted more restrictive abortion policies yet permit fertility clinics to create surplus IVF embryos. This essay examines this issue: Is it morally inconsistent to prohibit abortion yet permit surplus embryos to be used in fertility medicine? I consider various arguments that try to reconcile this tension. None succeed. Either one holds that embryos have full moral status, and opposes both abortion and surplus embryos, or one denies that embryos have full moral status, which would permit surplus (...) embryos to be used but would entail that some abortions should be permissible as well. (shrink)

Debates on the moral status of human embryos have been highly and continuously controversial. For many, these controversies have turned into a fruitless scholastical endeavor. However, recent developments and insights in cellular biology have cast further doubt on one of the core points of dissent: the argument from potentiality. In this article we want to show in a nonscholastical way why this argument cannot possibly survive. Getting once more into the intricacies of status debates is a must in our eyes. (...) Not merely intellectual coherence but the standing and self-understanding of current stem cell research might profit from finally taking leave of the argument from potentiality. (shrink)

Although two documents from the Congregation for the Doctrine of the Faith have given instruction on the moral problems of artificial reproductive technologies and the importance of respecting the lives of cryopreserved embryos, no definitive judgment has been made regarding the possibility of rescuing those embryos by means of embryo transfer into the uterus of a willing woman. This essay offers an analysis of the morality of embryo transfer in light of the ethical principles of St. Thomas Aquinas and argues (...) that the proper use of our generative potential is only safeguarded by being restricted to marital intercourse. The arguments of those who favor the adoption model are considered and rejected in light of a Thomistic analysis of the categories of paternity, maternity, and filiation. National Catholic Bioethics Quarterly 14.4 : 673–695. (shrink)

One strategy for arguing that it should be legally permissible to create human embryos, or to use of spare human embryos, for scientific research purposes involves the claim that such embryos cannot be persons because they are not human individuals while twinning may yet take place. Being a human individual is considered to be by most people a necessary condition for being a human person. I argue first that such an argument against the personhood of embryos must be rationally conclusive (...) if their destruction in public places such as laboratories is to be countenanced. I base this argument on a popular understanding of the role that the notion of privacy plays in abortion law. I then argue that such arguments against personhood are not rationally conclusive. The claim that the early embryos is not a human individual is not nearly as obvious as some assert. (shrink)

The “Embryo Rescue Case” (ERC) refers to a thought experiment that is used to argue against the view that embryos have a right to life (i.e. are persons). I will argue that cognitive science undermines the intuition elicited by the ERC; I will show that whether or not embryos have a right to life, our mental tools will make it very difficult to believe that embryos have said right. This suggests that the intuition elicited by the ERC is not truth (...) indicative. The upshot of this is that we have an undercutting defeater for our intuition that embryos do not have a right to life. (shrink)

Abortion is a controversial and divisive topic. The paper gives a short review of the main approaches throughout the history of European thinking to this complex problem. Moral concerns about abortion often turn on the questions of when human life can be said to has began and what is the moral status of human embryo and fetus. The paper gives also an outline of several scientific and religious attempts to solve the problem.

Recent work in cognitive science of religion (CSR) is beginning to converge on a very interesting thesis—that, given the ordinary features of human minds operating in typical human environments, we are naturally disposed to believe in the existence of gods, among other religious ideas (e.g., seeAtran [2002], Barrett [2004; 2012], Bering [2011], Boyer [2001], Guthrie [1993], McCauley [2011], Pyysiäinen [2004; 2009]). In this paper, we explore whether such a discovery ultimately helps or hurts the atheist position—whether, for example, it lends (...) credence to atheism by explaining away religious belief or whether it actually strengthens some already powerful arguments against atheism in the relevant philosophical literature.We argue that the recent discoveries of CSR hurt, not help, the atheist position—that CSR, if anything, should not give atheists epistemic assurance. (shrink)

Hurley’s is a difficult book to work through—partly because of its length and the complexity of its arguments, but also because each of the ten essays of which it is composed has a rather different starting point and focus, and because few of her arguments achieve real closure. Essay 2 discusses competing interpretations of Kant, essay 4 articulates nonconceptual forms of self-consciousness, essay 5 offers fresh interpretations of commissurotomy patients’ behavior, essay 6 develops an objection to Wittgenstein on rule following, (...) essay 8 attacks an alleged assumption of externalism, and chapter 10 explores the possibility of combining a “motor theory” and a “control theory” of perception. This is a very rich brew, and at least half the challenge this book presents consists in discerning its central argument and conclusion with enough precision to bring criticism to bear. (shrink)

The primary aim of this paper is to highlight, at least in short, how the resources of experimental philosophy could be fruitfully applied to the evidential problem of evil. To do this, we will consider two of the most influential and archetypal formulations of the problem: William L. Rowe’s article, “The Problem of Evil and Some Varieties of Atheism” (1979). and Paul Draper’s article, “Pain and Pleasure: An Evidential Problem for Theists” (1989). We will consider the relevance of experimental philosophy (...) to Rowe’s 1979 argument in §1 and to Draper’s 1989 argument in §2. But in addition to exploring how the resources of experimental philosophy might apply to the problem of evil, it is also worth exploring what broader empirical factors might contribute to people having the intuitions that have—from someone’s affective state to someone’s need for closure. In §3, we want to very briefly elucidate a few areas where the psychology of philosophy might be productively explored in future empirical research. (shrink)

This study evaluated the biological dimension of meditation and self-transcendent states. A convenience sample of 513 participants was drawn from attendees at a 4-day guided meditation workshop. Half were randomly assigned to an active placebo control intervention. All were assessed on a variety of measures, both psychological [anxiety, pain, posttraumatic stress disorder, positive emotions, and transcendent states], and physiological. Additional biological assessments including salivary immunoglobulin-A, cortisol, and Quantitative Electroencephalography were obtained from subset of the Experimental group. No significant difference in (...) psychological symptoms or positive emotions was observed between Experimental and placebo groups at baseline. At post-test, significant improvements were noted in the Experimental group, including a 49.5% median increase in SIgA, though cortisol remained unchanged. qEEG z-score analysis identified sustained stress reduction, including delta frequency band amplitude increases, high beta decreases, and faster acquisition of sustained alpha states. Psychological symptoms also improved on all measures. At 6-month follow-up, PTSD and somatic symptoms significantly improved from baseline, and post-test versus 6-month follow-up results indicated significant increases in happiness and spiritual and physical oneness, along with decreases in depressive symptoms. These findings suggest that autonomic self-regulation and transcendent states may be measured in both biological and psychological dimensions and are associated with pervasive health benefits. (shrink)

Unfashionable Observations - often translated as the Untimely Meditations or Thoughts Out of Season - is made up of four independent essays written between 1873 and 1876. The book remains a puzzle: what structure, principles and arguments underlie the essays? Presupposing no prior knowledge of Nietzsche or the text, Jeffrey Church sets the essays in historical and philosophical context, guides you through the text section-by-section and develops a structural overview of each essay. He reveals how the common themes of freedom, (...) culture and genius unify the essays" -- Provided by publisher. (shrink)

Most opposition to induced abortion turns on the belief that human fetuses are persons from conception. On this view, the moral status of the fetus alone requires those in a position to provide aid—gestational mothers—to make tremendous sacrifices to benefit the fetus. Recently, critics have argued that this pro-life position requires more than opposition to induced abortion. Pro-life theorists are relatively silent on the issues of spontaneous abortion, surplus in vitro fertilisation human embryos, and the suffering and death of born (...) persons due to lack of access to food, shelter and medical care. Colgrove et al call such arguments inconsistency arguments, arguing they ‘do not matter’ and mischaracterise them as ad hominem attacks. Here, I argue these are better understood as moral dilemmas. While some critics argue pro-life inaction is evidence that they do not really believe human fetuses are persons, I contend this inaction is likely the result of resolvable confusion rather than moral negligence. (shrink)

A common utilitarian argument in favor of abortion for fetal defects rests on some controversial assumptions about what counts as a life worth living. Yet critics of abortion for fetal defects are also in need of an argument free from controversial assumptions about the future child's quality of life. Christopher Kaczor (in: Kaczor (ed), The ethics of abortion: women's rights, human life, and the question of justice, Routledge, New York, 2011) has devised an analogy that apparently satisfies this condition. On (...) close scrutiny, however, Kaczor's analogy is too weak to debunk the common-morality intuition that at least some abortions for fetal defects are morally permissible. The upshot of this discussion is that, on the moral permissibility of abortions for fetal defects, a case-by-case approach is to be preferred. (shrink)

It is no longer possible to claim that the biological characteristics of the future adult are already determined at conception. After all, a zygote may develop into a hydatidiform mole rather than into a human being. The development of an individual human person is determined by genetically and nongenetically coded molecules within the embryo, together with the influence of the maternal environment. Consequently, it is an error to regard the zygote's chromosomal (and other) DNA as sufficient to determine the uniqueness (...) of the future individual. (shrink)

The scope of embryo research in the UK has been expanded by the Human Fertilisation and Embryology Regulations 2001. Two advisory bodies—the Chief Medical Officer’s Expert Group and the House of Lords’ Select Committee—presented various arguments in favour of embryo research. One of these is the view that, just as lottery tickets have relatively little value before the draw because of the low probability of their being the winning ticket, early embryos have relatively little value because of the presumed (...) low probability that they will mature into more developed embryos. This argument from probability is questioned in this paper, as well as the contention that allowing embryo destruction is incompatible with the view that embryos have full moral status. Although I challenge Savulescu’s view that early embryos should be entered into a lottery in which they are subjected to the probability of being destroyed , a revised version of Thomson’s analogy of the famous violinist defies the view that the position that the embryo has full moral status is incompatible with qualified support for embryo destruction. (shrink)

In this chapter: I distinguish the existential problem of divine hiddenness from the evidential problem of divine hiddenness. The former being primarily concerned with the apparent hiddenness of a personal God in the lives of believers amidst terrible suffering. The latter being primarily concerned with the apparent hiddenness of God being evidence against God’s existence. In the first section, I highlight the basic contours of the evidential problem of divine hiddenness, and suggested that the argument rests on two important assumptions: (...) the perfectly loving assumption and the no-fault assumption. In the second section, a few possible responses to the evidential problem of divine hiddenness were considered, which center on rejecting either the perfectly loving assumption or the no-fault assumption. (shrink)

The notion of an explicit representation plays a crucial role in O'Brien & Opie's arguments. Clarifying what explicit representation involves proves difficult, however, as various explications of this key notion fail to make sense of the overall argument. In particular, neither the notion of encoding in discrete objects nor the notion of active versus potentially active representation seems to help in specifying what is distinctive of conscious representation.

ABSTRACT A disagreement about the nature of Nietzsche's “aesthetic justification of existence” has recently emerged in the literature. In this essay, I argue that the disagreement stems from a common but mistaken assumption that Nietzsche focuses on works of art to justify life. Instead, in the Untimely Meditations, Nietzsche shifts to the beauty of exemplary individuals to justify life. Through an examination of the Kantian practical arguments in the Untimely Meditations, I show how the scholarly debate can be overcome and (...) suggest that Nietzsche's early period views can illuminate the basis of some of his late period ideals, such as the overman and philosopher of the future. (shrink)

Ruth Byrne presents a three-step argument to the conclusion that counterfactual imagining is rational. Insofar as this argument is valid, the conclusion is weaker than it seems. More importantly, it does not represent the central contributions of this book – contributions that, if anything, point instead to what is irrational about counterfactual imagining.