P. M. Asaro: What should We Want from a Robot Ethic? G. Tamburrini: Robot Ethics: A View from the Philosophy of Science B. Becker: Social Robots - Emotional Agents: Some Remarks on Naturalizing Man-machine Interaction E. Datteri, G. Tamburrini: Ethical Reflections on Health Care Robotics P. Lin, G. Bekey, K. Abney: Robots in War: Issues of Risk and Ethics J. Altmann: Preventive Arms Control for Uninhabited Military Vehicles J. Weber: Robotic warfare, Human Rights & The Rhetorics of Ethical Machines T. (...) Nishida: Towards Robots with Good Will R. Capurro: Ethics and Robotics. (shrink)

Professor Maurice Cranston, who died suddenly on 5 November 1993, was a man of many talents. Pre-eminent as a biographer of Locke and Rousseau, he was also distinguished for his own contribution to political philosophy and for his capacity to expound the political thought of others in clear, simple language. He did this with great success not only in the lecture room but also in numerous broadcast talks and discussions, notably on the Third Programme of the BBC. In his academic (...) work he was particularly well informed on French political thought, contemporary as much as classical, and he wrote extensively on Sartre and more briefly on Camus and Foucault. He was himself fluent in the French language and he translated Rousseau's Social Contract and Discourse on Inequality for the Penguin Classics series. He was proficient in German and Italian too, and he knew enough Danish to translate a book on Wittgenstein written in that language. His love of literature often led him to illustrate philosophical points with apt examples from classical novels. He even wrote a couple of novels himself in his youth. It will be plain from this brief catalogue that he was an eminently civilized person. He was, in addition, an exceptionally friendly man and engagingly modest about his own abilities. (shrink)

In the introductory chapter of his essay on Utilitarianism, John Stuart Mill says his aim is to contribute towards the understanding of utilitarianism and towards ‘such proof as it is susceptible of’. He immediately adds that ‘this cannot be proof in the ordinary and popular meaning of the term’ because ‘ultimate ends are not amenable to direct proof’. A proof that something is good has to show that it is ‘a means to something admitted to be good without proof’. But, (...) he goes on, this does not imply that a formula of ultimate ends can only be accepted on ‘blind impulse, or arbitrary choice’. It can be rationally discussed and subjected to proof in a wider sense of that word. ‘Considerations may be presented capable of determining the intellect either to give or withhold its assent to the doctrine; and this is equivalent to proof.’. (shrink)

The term angeletics comes from greek angelos/angelia, meaning messenger/messages. We use these terms when we refer to angels or divine messengers. There is a long tradition in theology and religious studies called angelology. Angeletics is in this regard different from angelology. Its purpose is to study the phenomenon of messages and messengers within the boundaries of the condition humaine, having as its primary object human communication but including technical and natural processes as well. For the philosophers of the Enlightenment, such (...) as Immanuel Kant, the censorship-free distribution of scientific knowledge through the press belongs to the core of a free society. The question today is then to what extent the internet creates a new angeletic space giving rise to new synergies of messages and messengers beyond the hierarchical structure of mass media. Throughout this book angeletics is the general term used for the cultural, social and philosophical phenomenon of messages and messengers while ›messaging theory‹ is used more specifically for the phenomenon’s scientific and technological aspects. This publication has a bipartite structure: The first part, ›Foundations‹, deals with basic ideas of angeletics, its fundamental tenets, interpretations and presuppositions. The second part, ›Applications‹, illustrates these ideas through contributions from several experts in related fields such as bio-informatics, media studies, communication philosophy, information science, physics, classical studies, General Systems Theory and linguistics which shine a critical light on angeletics and at the same time develop it in various directions. (shrink)

A cost analysis of the utilization of new expensive vascular grafts is performed, applying the methodology of decision analysis to the theoretical case of a sixty year old male patient undergoing femoropopliteal grafting for limb threatening ischemia. The problem is presented graphically as a decision tree, uncertainties are quantified in terms of probabilities and end outcomes are evaluated in monetary terms. This informations is then utilized to calculate cost values associated with alternative actions.Based on initial cumulative patency figures of the (...) new more expensive grafts and the known performance of the older grafts, the initial high expense for the new grafts is justified economically, if the saphenous vein is not available. This analysis, apart from giving an answer to a specific clinical problem, can be viewed as a general model for cost analysis of surgical procedures. (shrink)

In recent years, the scientific study of meditation and psychedelic drugs has seen remarkable developments. The increased focus on meditation in cognitive neuroscience has led to a cross-cultural classification of standard meditation styles validated by functional and structural neuroanatomical data. Meanwhile, the renaissance of psychedelic research has shed light on the neurophysiology of altered states of consciousness induced by classical psychedelics, such as psilocybin and LSD, whose effects are mainly mediated by agonism of serotonin receptors. Few attempts have been made (...) at bridging these two domains of inquiry, despite intriguing evidence of overlap between the phenomenology and neurophysiology of meditation practice and psychedelic states. In particular, many contemplative traditions explicitly aim at dissolving the sense of self by eliciting altered states of consciousness through meditation, while classical psychedelics are known to produce significant disruptions of self-consciousness, a phenomenon known as drug-induced ego dissolution. In this article, we discuss available evidence regarding convergences and differences between phenomenological and neurophysiological data on meditation practice and psychedelic drug-induced states, with a particular emphasis on alterations of self-experience. While both meditation and psychedelics may disrupt self-consciousness and underlying neural processes, we emphasize that neither meditation nor psychedelic states can be conceived as simple, uniform categories. Moreover, we suggest that there are important phenomenological differences even between conscious states described as experiences of self-loss. As a result, we propose that self-consciousness may be best construed as a multidimensional construct, and that “self-loss,” far from being an unequivocal phenomenon, can take several forms. Indeed, various aspects of self-consciousness, including narrative aspects linked to autobiographical memory, self-related thoughts and mental time travel, and embodied aspects rooted in multisensory processes, may be differently affected by psychedelics and meditation practices. Finally, we consider long-term outcomes of experiences of self-loss induced by meditation and psychedelics on individual traits and prosocial behavior. We call for caution regarding the problematic conflation of temporary states of self-loss with “selflessness” as a behavioral or social trait, although there is preliminary evidence that correlations between short-term experiences of self-loss and long-term trait alterations may exist. (shrink)

There is converging evidence that high doses of hallucinogenic drugs can produce significant alterations of self-experience, described as the dissolution of the sense of self and the loss of boundaries between self and world. This article discusses the relevance of this phenomenon, known as “drug-induced ego dissolution (DIED)”, for cognitive neuroscience, psychology and philosophy of mind. Data from self-report questionnaires suggest that three neuropharmacological classes of drugs can induce ego dissolution: classical psychedelics, dissociative anesthetics and agonists of the kappa opioid (...) receptor (KOR). While these substances act on different neurotransmitter receptors, they all produce strong subjective effects that can be compared to the symptoms of acute psychosis, including ego dissolution. It has been suggested that neuroimaging of DIED can indirectly shed light on the neural correlates of the self. While this line of inquiry is promising, its results must be interpreted with caution. First, neural correlates of ego dissolution might reveal the necessary neurophysiological conditions for the maintenance of the sense of self, but it is more doubtful that this method can reveal its minimally sufficient conditions. Second, it is necessary to define the relevant notion of self at play in the phenomenon of DIED. This article suggests that DIED consists in the disruption of subpersonal processes underlying the “minimal” or “embodied” self, i.e., the basic experience of being a self rooted in multimodal integration of self-related stimuli. This hypothesis is consistent with Bayesian models of phenomenal selfhood, according to which the subjective structure of conscious experience ultimately results from the optimization of predictions in perception and action. Finally, it is argued that DIED is also of particular interest for philosophy of mind. On the one hand, it challenges theories according to which consciousness always involves self-awareness. On the other hand, it suggests that ordinary conscious experience might involve a minimal kind of self-awareness rooted in multisensory processing, which is what appears to fade away during DIED. (shrink)

Many authors argue that conscious experience involves a sense of self or self-consciousness. According to the strongest version of this claim, there can be no selfless states of consciousness, namely states of consciousness that lack self-consciousness altogether. Disagreements about this claim are likely to remain merely verbal as long as the target notion of self-consciousness is not adequately specified. After distinguishing six notions of self-consciousness commonly discussed in the literature, I argue that none of the corresponding features is necessary for (...) consciousness, because there are states of consciousness in which each of them is plausibly missing. Such states can be said to be at least partially selfless, since they lack at least one of the ways in which one could be self-conscious. Furthermore, I argue that there is also preliminary empirical evidence that some states of consciousness lack all of these six putative forms of self-consciousness. Such states might be totally selfless, insofar as they lack all the ways in which one could be self-conscious. I conclude by addressing four objections to the possibility and reportability of totally selfless states of consciousness. (shrink)

Cicero's philosophical works introduced Latin audiences to the ideas of the Stoics, Epicureans and other schools and figures of the post-Aristotelian period, thus influencing the transmission of those ideas through later history. While Cicero's value as documentary evidence for the Hellenistic schools is unquestioned, Cicero: The Philosophy of a Roman Sceptic explores his writings as works of philosophy that do more than simply synthesize the thought of others, but instead offer a unique viewpoint of their own. In this volume (...) class='Hi'>Raphael Woolf describes and evaluates Cicero's philosophical achievements, paying particular attention to his relation to those philosophers he draws upon in his works, his Romanizing of Greek philosophy, and his own sceptical and dialectical outlook. The volume aims, using the best tools of philosophical, philological and historical analysis, to do Cicero justice as a distinctive philosophical voice. Situating Cicero's work in its historical and political context, this volume provides a detailed analysis of the thought of one of the finest orators and writers of the Roman period. Written in an accessible and engaging style, Cicero: The Philosophy of a Roman Sceptic is a key resource for those interested in Cicero's role in shaping Classical philosophy. (shrink)

Many authors claim that being conscious constitutively involves being self-conscious, or conscious of oneself. This claim appears to be threatened by reports of `selfless' episodes, or conscious episodes lacking self-consciousness, recently described in a number of pathological and nonpathological conditions. However, the credibility of these reports has in turn been challenged on the following grounds: remembering and reporting a past conscious episode as an episode that one went through is only possible if one was conscious of oneself while undergoing it. (...) Call this the Memory Challenge. This paper argues that the Memory Challenge fails to undermine the credibility to reports of selfless episodes, because it rests on problematic assumptions about episodic memory. The paper further argues that we should distinguish between several kinds of self-representation that may be involved in the process of episodic remembering, and that once we do so, it is no longer mysterious how one could accurately remember and report a selfless episode as an episode that one went through. Thus, we should take reports of this kind seriously, and view them as credible counter-examples to the claim that consciousness constitutively involves self-consciousness. (shrink)

This special issue is about something most of us might find very hard to conceive: states of consciousness in which self-consciousness is radically disrupted or altogether missing.

Deep learning algorithms are rapidly changing the way in which audiovisual media can be produced. Synthetic audiovisual media generated with deep learning—often subsumed colloquially under the label “deepfakes”—have a number of impressive characteristics; they are increasingly trivial to produce, and can be indistinguishable from real sounds and images recorded with a sensor. Much attention has been dedicated to ethical concerns raised by this technological development. Here, I focus instead on a set of issues related to the notion of synthetic audiovisual (...) media, its place within a broader taxonomy of audiovisual media, and how deep learning techniques differ from more traditional approaches to media synthesis. After reviewing important etiological features of deep learning pipelines for media manipulation and generation, I argue that “deepfakes” and related synthetic media produced with such pipelines do not merely offer incremental improvements over previous methods, but challenge traditional taxonomical distinctions, and pave the way for genuinely novel kinds of audiovisual media. (shrink)

Kyle Stanford has recently given substance to the problem of unconceived alternatives, which challenges the reliability of inference to the best explanation (IBE) in remote domains of nature. Conjoined with the view that IBE is the central inferential tool at our disposal in investigating these domains, the problem of unconceived alternatives leads to scientific anti-realism. We argue that, at least within the biological community, scientists are now and have long been aware of the dangers of IBE. We re-analyse the nineteenth-century (...) study of inheritance and development (Stanford’s case study) and extend it into the twentieth century, focusing in particular on both classical Mendelian genetics and the studies by Avery et al. on the chemical nature of the hereditary substance. Our extended case studies show the preference of the biological community for a different methodological standard: the vera causa ideal, which requires that purported causes be shown on non-explanatory grounds to exist and be competent to produce their effects. On this basis, we defend a prospective realism about the biological sciences. 1 Introduction2 Stanford on Unconceived Alternatives3 Pangenesis: A Re-analysis4 The Vera Causa Ideal I: Negative Aspect5 Rendering Heredity Accessible6 The Vera Causa Ideal II: Positive Aspect7 Implications for Scientific Realism8 Conclusion. (shrink)

Raphael Meldola (1849-1915), an industrial chemist and keen naturalist, under the influence of Darwin, brought new German studies on evolution by natural selection that appeared in the 1870s to the attention of the British scientific community. Meldola's special interest was in mimicry among butterflies; through this he became a prominent neo-Darwinian. His wide-ranging achievements in science led to appointments as president of important professional scientific societies, and of a local club of like-minded amateurs, particularly field naturalists. This is an (...) account of Meldola's early scientific connections and studies related to entomology and natural selection, his contributions to the study of mimicry, and his promotion in the mid-1890s of a more theory driven approach among entomologists. (shrink)

Religions are not only communities of faith but also of communication. Religious communication takes place vertically between human beings and a transcendent holy entity. It also occurs horizontally among individuals and groups. This is the reason why religions cannot remain unaffected by the development and the future directions of the global digital network. In view of this situation, religions experience the challenge of giving ethical answers to pressing ques-tions particularly in the field of information and com-munication technology that is at (...) the same time an important instrument for religious communication. (shrink)

According to the "confrontation model," integrated history and philosophy of science operates like an empirical science. It tests philosophical accounts of science against historical case studies much like other sciences test theory against data. However, the confrontation model's critics object that historical facts can neither support generalizations nor genuinely test philosophical theories. Here I argue that most of the model's defects trace to its usual framing in terms of two problematic accounts of empirical inference: the hypothetico-deductive method and enumerative induction. (...) This framing can be taken to suggest an unprofitable one-off confrontation between particular historical facts and general philosophical theories. I outline more recent accounts of empirical inquiry, which describe an iterative back-and-forth movement between concrete empirical exemplars to their abstract descriptions. Reframed along similar lines, the confrontation model continues to offer both conceptual insight and practical guidance for a naturalized philosophy of science. (shrink)

This paper deals with intercultural aspects of privacy, particularly with regard to differences between Japanese and Western conceptions. It starts with a reconstruction of the genealogy of Western subjectivity and human dignity as the basic assumptions underlying Western views on privacy. An analysis of the Western concept of informational privacy is presented. The Japanese topic of ‘‘denial of self” (Musi) as well as the concepts of Seken, Shakai and Ikai (as analyzed by the authors of the companion piece on privacy (...) in Japan) give rise to intercultural comparisons. The paper addresses the question of privacy in cyberspace and mass media. Finally the question of freedom of speech is related to the Japanese concepts of Ohyake and Watakusi. (shrink)

The paper presents, firstly, a brief review of the long history\nof information ethics beginning with the Greek concept of parrhesia\nor freedom of speech as analyzed by Michel Foucault. The recent concept\nof information ethics is related particularly to problems which arose\nin the last century with the development of computer technology and\nthe internet. A broader concept of information ethics as dealing\nwith the digital reconstruction of all possible phenomena leads to\nquestions relating to digital ontology. Following Heidegger{\textquoteright}s\nconception of the relation between ontology and metaphysics, (...) the\nauthor argues that ontology has to do with Being itself and not just\nwith the Being of beings which is the matter of metaphysics. The\nprimary aim of an ontological foundation of information ethics is\nto question the metaphysical ambitions of digital ontology understood\nas today{\textquoteright}s pervading understanding of Being. The\nauthor analyzes some challenges of digital technology, particularly\nwith regard to the moral status of digital agents. The author argues\nthat information ethics does not only deal with ethical questions\nrelating to the infosphere. This view is contrasted with arguments\npresented by Luciano Floridi on the foundation of information ethics\nas well as on the moral status of digital agents. It is argued that\na reductionist view of the human body as digital data overlooks the\nlimits of digital ontology and gives up one basis for ethical orientation.\nFinally issues related to the digital divide as well as to intercultural\naspects of information ethics are explored {\textendash} and long\nand short-term agendas for appropriate responses are presented. (shrink)

It is widely assumed that ordinary conscious experience involves some form of sense of self or consciousness of oneself. Moreover, this claim is often restricted to a ‘thin’ or ‘minimal’ notion of self-consciousness, or even ‘the simplest form of self-consciousness’, as opposed to more sophisticated forms of self-consciousness which are not deemed ubiquitous in ordinary experience. These formulations suggest that self-consciousness comes in degrees, and that individual subjects may differ with respect to the degree of self-consciousness they exhibit at a (...) given time. In this article, I critically examine this assumption. I consider what the claim that self-consciousness comes in degrees may mean, raise some challenges against the different versions of the claim, and conclude that none of them is both coherent and particularly plausible. (shrink)

There are only a few ethical regulations that deal explicitly with robots, in contrast to a vast number of regulations, which may be applied. We will focus on ethical issues with regard to “responsibility and autonomous robots”, “machines as a replacement for humans”, and “tele-presence”. Furthermore we will examine examples from special fields of application (medicine and healthcare, armed forces, and entertainment). We do not claim to present a complete list of ethical issue nor of regulations in the field of (...) robotics, but we will demonstrate that there are legal challenges with regard to these issues. (shrink)

This paper takes part in the ongoing debate on how emotions can be dealt with by argumentation theory. Its main goal is to formulate a relationship between emotion and argumentation which differs from that usually found in most of the literature on the subject. In the “standard” conception, emotions are seen as the objects of appeals which function as adjuvants to argumentation: speakers appeal to pity, fear, shame and the like in order to enhance the cogency of an argument which (...) bears on something else—whether it be the validity of a disputable opinion or the opportunity of a course of action. According to the “alternative” conception which I propose to consider, emotions themselves may be viewed, in some cases, as the very objects of argumentation. This conception lays emphasis on the arguability of emotions. Drawing on insights from current psychological and philosophical theories, it involves a reassessment of the Aristotelian concept of pathos, as well as an in-depth critical discussion of normative and descriptive approaches to emotional appeals. (shrink)

Aristotle's Eudemian Ethics has been unjustly neglected in comparison with its more famous counterpart the Nicomachean Ethics. This is in large part due to the fact that until recently no complete translation of the work has been available. But the Eudemian Ethics is a masterpiece in its own right, offering valuable insights into Aristotle's ideas on virtue, happiness and the good life. This volume offers a translation by Brad Inwood and Raphael Woolf that is both fluent and exact, and (...) an introduction in which they help the reader to gain a deeper understanding both of the Eudemian Ethics and of its relation to the Nicomachean Ethics and to Aristotle's ethical thought as a whole. The explanatory notes address Aristotle's many references to other works, people and events. The volume will be of interest to students and scholars of the history of ethics, ancient and moral philosophy, and Aristotle studies. (shrink)

The four frescoes by Raphael in the Stanza della Segnatura in the Vatican Museum visually embody close approximations of several numerical ratios that are of deep significance in the material grounding of musical harmonies in the physics of natural harmonics. Of special significance is the Pythagorean musical frequency ratio of 9:8, the whole tone interval, which in Plato's Timaeus is called the epogdoôn.

Even though anthropogenic climate change is largely caused by industrialized nations, its burden is distributed unevenly with poor developing countries suffering the most. A common response to livelihood insecurities and destruction is migration. Using Peter Singer's ‘historical principle’, this paper argues that a morally just evaluation requires taking causality between climate change and migration under consideration. The historical principle is employed to emphasize shortcomings in commonly made philosophical arguments to oppose immigration. The article concludes that none of these arguments is (...) able to override the moral responsibility of industrialized countries to compensate for harms that their actions have caused. (shrink)

Existe-il une corrélation entre le pouvoir d’un organe et le rang hiérarchique de ses normes ? La théorie réaliste de l’interprétation pourrait sembler indiquer le contraire. En effet, si, comme elle l’enseigne, c’est l’interprète d’un énoncé qui en détermine la signification, les agents de l’administration qui mettent en œuvre les politiques publiques devraient exercer un pouvoir plus important que le législateur qui les élabore. L’auteur de l’article soutient toutefois qu’une semblable conclusion serait erronée car les organes qui produisent les énoncés (...) juridiques généraux et abstraits peuvent généralement mobiliser des ressources qui leur permettent de contraindre les organes de concrétisation à prendre leurs préférences en considération. La représentation du droit comme étant constitué d’un ensemble de normes hiérarchisées confère certaines des ressources dont ils disposent. Celles-ci doivent être identifiées et leur efficacité évaluée afin de déterminer dans quels cas il existe.. (shrink)

If we consider the field of argumentation studies, we notice that many approaches consider argumentation in a pragmatic manner and define it as a verbal activity oriented towards the realization of a goal . The idea that subtends—in an explicit or implicit way—most of these approaches is that argumentation fundamentally aims to produce an effect upon an addressee, and that this effect consists in a change of attitude with respect to a viewpoint : argumentation theories inevitably confront the issue of (...) persuasion. In this article, I defend, on the contrary, the hypothesis that it is not necessary to have recourse to the notion of persuasion, nor even to speak of an attempt to provoke a change of attitude in the addressee , in order to develop a general definition of argumentation. It seems to me that there are serious reasons to uncouple, insofar as a definition is concerned, argumentation and persuasion. I will look to identify these reasons, to formulate them and to evaluate their strength. In the same vein as recent works by Christian Plantin and Marc Angenot, I will try to contribute to the development of a non - persuasive conception of argumentation. Such a conception bases the definition of argumentation on the pragmatic aims of “justification” and “positioning”, as well as on the articulation of a discourse and a counter-discourse. I argue that such a conception might offer a better empirical adequacy than those that link, insofar as a definition, the argumentative activity and the persuasive aim. (shrink)

There has been much written of late on the topic of panentheism. Dissatisfied with many contemporary descriptions of “panentheism” and the related “pantheism,” which we feel arise out of theistic presuppositions, we produce our own definition of sorts, rooted in and paying respect to the term’s etymology and the concept’s roots in Indian religion and western philosophy. Furthermore, we consider and comment on the arguments and comments concerning panentheism’s definition and plausibility put forth by Göcke, Mullins, and Nickel.

The purpose of this paper is to give an outline of digital hermeneutics understood as the encounter between hermeneutics and digital technology, particularly the Internet. In the first part, I want to raise the attention of IT researchers and hermeneuticists to the theoretic and practical relevance of the encounter of their areas of research that are sometimes considered as incompatible to each other. There is still a lot of translation work to be done in order to get these two cultures (...) come closer to and profit from each other. The second part of the paper deals with the foundation of digital hermeneutics on what I call—following Heidegger’s and Vattimo’s paths—digital ontology as opposed to digital metaphysics. (shrink)

The research is developed with the use of deductive and descriptive analytical methods used to obtain information on doctrine and jurisprudence and to establish and describe specific situations in the field of Ecuadorian Medical Law respectively. The main objective is to provide scientific and doctrinal tools to understand guilt in cases of omissive conduct in Ecuadorian medical practice, as well as its comparison with other countries such as Colombia, Mexico, Cuba and Argentina, the results of the research show that the (...) doctrine in the relationship to the categories of Omission, Guilt, Guarantor Position and Permitted Risk is broad and is based on scientific-doctrinal advances of the Normative Conception of Guilt comprised between 1995 and 2022. To establish useful criteria and conclusions, the discussion focuses on defining what is considered “guilty” in the context of Medical Law, highlighting the importance of elements such as the objective duty, the harmful result and the analysis of the concomitant circumstances, emphasizing the importance of considering the context and development of the facts in cases of omissive conduct in medicine and not only the result. In relation to omissions in criminal law, a distinction is made between proper and improper and finally, it concludes by suggesting the modification of article 146 of the Organic Integral Criminal Code to guarantee due process and a effective judicial protection in matters related to health in Ecuador, specifically with regard to causality in cases of omissive conduct. (shrink)

This text was conceived as a synthetic introduction to the present-day situation of metaphysics and of ontology, to their stakes and their practices in the world and in France, by way of a preamble to the activities of the Atelier de métaphysique et d’ontologie contemporaines [Workshop on Contemporary Metaphysics and Ontology] at the École normale supérieure. It certainly does not claim to replace the more informed and complete works on which it rests, and which are indicated in the bibliography. Nor (...) was it written with the intention of being polemical against whatever conception of metaphysics, even if it goes without saying that the question is approached in a necssarily partisan, though resolutely conciliatory, manner. (shrink)

Father Raphael C. McCarthy Doctor of Philosophy of London University and Professor of Experimental Psychology at St. Louis University, contributes this paper as a general estimate of the influence which one man has exerted upon the vast and complex network of scientific world thought. We also acknowledge our indebtedness for this paper to Mr. William J. Miller of the School of Philosophy, who prepared it for those pages.