We give a general method for producing various effective Null and Positivstellensätze, and getting new Positivstellensätze in algebraically closed valued fields and ordered groups. These various effective Nullstellensätze produce algebraic identities certifying that some geometric conditions cannot be simultaneously satisfied. We produce also constructive versions of abstract classical results of algebra based on Zorn's lemma in several cases where such constructive version did not exist. For example, the fact that a real field can be totally ordered, or the fact that (...) a field can be embedded in an algebraically closed field. Our results are based on the concepts we develop of dynamical proofs and simultaneous collapse. (shrink)

Henry More est le plus connu des Platoniciens de Cambridge et l’Enchiridion Metaphysicum, son dernier ouvrage, représente l’accomplissement de sa pensée. Il s’agit d’une enquête métaphysique dont le principal objectif est d’établir l’existence d’une substance immatérielle, d’une âme du monde, sorte d’intermédiaire entre Dieu et le monde par laquelle les choses agissent. More nous invite ainsi à découvrir la vraie métaphysique qui consiste en la découverte de la nature véritable de l’étendue des êtres spirituels comme Dieu, les anges et (...) les démons, l’espace, les âmes individuelles des hommes ou des bêtes. Ce manuel de métaphysique prend appui sur le mécanisme cartésien pour mieux le contredire et démontre que l’extension spirituelle est la principale qualité des esprits. Cette doctrine conduira More à re-diviniser l’espace pour l’instituer à l’instar des kabbalistes de l’école de Safed, comme lieu de la possibilité de l’existence du monde. More montre ainsi les limites des mécanismes d’Hobbes et de Descartes tout en essayant de composer avec d’autres savants mécanistes tels que Robert Boyle et Robert Hooke. Quelques années plus tard, à Cambridge, Newton, sur les pas d’Henry More, pensera la nature de son espace physique comme un espace de nature divine, comme un Sensorium Dei. ---------------------------------------------------------------------------------------------------- ------------- Biographie de l'auteur: Françoise Monnoyeur est Docent en philosophie (Associate Professor). Elle enseigne la philosophie et l’histoire des sciences en France, aux États-Unis et en Suède. Elle est chercheur associée au centre Jean Pépin, Paris, France. Ses principaux ouvrages portent sur Descartes, l’infini, la matière, la vie. (shrink)

In their book on Descartes’s Changing Mind, Peter Machamer and J. E. McGuire argue that Descartes discarded dualism to embrace a kind of monism. Descartes famously proposed that there are two separate substances, mind and body, with distinct attributes of thought and extension. According to Machamer and McGuire, because of the limitations of our intellect, we cannot have insight into the nature of either substance. After reviewing their argument in some detail, I will argue that Descartes did not relinquish his (...) favorite doctrine but may have actually fooled himself about the nature of his dualism. It is my contention that the problem with Cartesian dualism stems from the definition of mind and body as substances and the role of their respective attributes—thought and extension—in the definition of substances. (shrink)

Pour cette collection d' «Initiations aux Pères de l'Église» où ont déjà pris place un volume sur Maxime le Confesseur et un sur la Règle de saint Augustin, ainsi que des études thématiques, Ph. Henné a choisi de faire autant de place aux textes même d'Origène (O.) qu'à la présentation de sa théologie. Les travaux d'Henri Crouzel, en particulier l'ouvrage paru en 1984 (Origène, Lethielleux, Paris) et ses bibliographies origéniennes, consti­tuent les références permanentes del'A. mais la clart..

Dan ZAHAVI, Husserl and Transcendental Intersubjectivity. A Response to the Linguistic-Pragmatic Critique ; Françoise DASTUR, Chair et langage. Essais sur Merleau-Ponty ; Jean GREISCH, Michel Henry et l’épreuve de la vie ; Elisabeth STRÖKER, The Husserlian Foundations of Science ; John McCUMBER, Metaphysics and Oppression, Heidegger’s Challenge to Western Philosophy ; Marc RICHIR, Phénoménologie en esquisses. Nouvelles fondations ; Raphaël GÉLY, La genèse du sentir. Essai sur Merleau-Ponty ; John SALLIS, Force of Imagination: The Sense of the Elemental (...) ; Bin KIMURA, L’entre. Une approche phénoménologique de la schizophrénie ; Dermot MORAN, Tim MOONEY, The Phenomenology Reader ; Ion COPOERU, Structuri ale constituirii ; Fabio CIARAMELLI, La distruzione del’desiderio. Il narcisismo nell’epoca di consumo di massa ; Pierre KELLER, Husserl and Heidegger on Human Experience. (shrink)

One of the most influential of the Victorian philosophers, Henry Sidgwick also made important contributions to fields such as economics, political theory and classics. A proponent of the utilitarianism of Jeremy Bentham and John Stuart Mill, which he analysed in his classic work The Methods of Ethics , he later turned to the practical side of politics in this work, published in 1891. His aim was to have a 'rational discussion of political questions in modern states', and he offers (...) a thorough examination of Victorian politics, beginning with a discussion of political theory before moving on to more concrete matters such as property and law. The later chapters discuss the function of government through themes such as procedural matters, international affairs, war, political parties, and public participation, giving a comprehensive account of both ideas about and the functioning of late-nineteenth-century government. (shrink)

Most people will grant that we bear special moral obligations toward at least some nonhuman animals that we do not bear toward inanimate objects like stones, mountains, or works of art. These moral obligations are plausibly grounded in the fact that many if not all nonhuman animals share important psychological states and capacities with us, such as consciousness, suffering, and goal-directed behavior. But which of these states and capacities are really critical for a creature’s possessing moral status, and how can (...) we determine which animals do in fact have them? In this paper, I examine three main approaches to answering these questions. First are what I term consciousness-based approaches that tackles these questions by first asking which animals are conscious. Second are affective-state approaches that focus on identifying behavioural and physiological signatures of states like pain, fear, and stress. Finally, I consider what I call preference-based approaches whose focus is on the question of which organisms have robust motivational states. I examine the prospects and challenges—both theoretical and empirical—faced by these seemingly contrasting methodologies. I go on to suggest that there are reasons why, despite challenges, we should be robustly committed to the project of identifying psychological grounds of moral status. I conclude by suggesting we should also take seriously the idea of pluralism about moral status, according to which each of these approaches might be capable of providing independent grounds for moral consideration. (shrink)

Although a good deal has been written about Kant's conception of free will in recent years, there has been no serious attempt to examine in detail the development of his views on the topic. This book endeavours to remedy the situation by tracing Kant's thoughts on free will from his earliest discussions of it in the 1750s through to his last accounts in the 1790s. This developmental approach is of interest for at least two reasons. First, it shows that the (...) path that led Kant to view freedom as a transcendental power that is both radically distinct from and compatible with the causality of nature was a winding one. Second, it indicates that, despite the variety of views of free will that Kant held at various times, the concept occupied a central place in his thought, because it was the point of union between his theoretical and practical philosophy. (shrink)

Some have argued that panpsychism offers the most simple view of reality. The most prominent advocate of this argument is Philip Goff. In this paper, I examine Goff’s position and argue that considerations of simplicity and parsimony do not support panpsychism. Quite the reverse: they give us good reason to reject it.

Raz's method is as unusual, and as admirable, as the substance of his sometimes rather unfortunately labeled "perfectionist liberalism"—unfortunate because "it is not perfectionist in the more ordinary sense of the term" in that it recognizes that "imperfect ways of life may be the best which is possible for people" and "is strongly pluralistic", while understanding its fundamental value of well-being as the active and autonomous making of a life of one's own. Raz's approach is simultaneously alert to the complexity (...) of argument, to a degree that practitioners of practical ethics sometimes are not, and aware of the limits of theorizing, as devotees of theoretical ethics rarely are. Thus, while scorning "supermarket liberalism" and rejecting, in company with Rawls, "hand-to-mouth piecemeal intuitionism", Raz also doubts whether ideal theory in the Rawlsian mode is "a meaningful enterprise", emphasizing wisely, in my judgment, that "not everything we know can be exhaustively stated in the abstract". The "dense webs of complex actions and interactions" that give meaning to our lives "defy explicit learning or comprehensive articulation. They are available only to those who have or can acquire practical knowledge of them, that is, knowledge embodied in social practices and transmitted by habituation". (shrink)

This brief, but tightly argued, work advances a dual thesis: Kant’s compatibilist solution to the free will problem is best understood in terms of Davidson’s anomalous monism; so understood, it constitutes a viable position, defensible in contemporary terms. The text consists of a short introduction followed by four substantive chapters dealing, respectively, with: Kant’s theory of compatibilism ; Kant and contemporary metaphysics ; Kant’s theory of causal determinism ; and Kant’s theory of free will. Because of the range of topics (...) covered and the thoroughness of its argumentation, this book should be of interest not only to Kantians, but to philosophers concerned with the more general issues regarding compatibilism. (shrink)

Despite the spectacular contributions to knowledge made by molecular biology during the last half century, cancer research has not delivered an agreed explanation of how malignant tumours originate. The models assiduously investigated in molecular terms largely reflect waves of fashion, and time has revealed their inadequacy: cancer is (1) not caused by the direct action of oncogenes, (2) not fully explained by the impairment of tumour suppressor genes, (3) not set in motion by mutations controlling the cell cycle, (4) not (...) governed by the dependence of malignant tumours on an adequate blood supply and (5) not triggered by a failure of programmed cell death. But there is now strong evidence that cancers may have their origin in mutations that block the execution of critical steps in the process of normal differentiation. Cancer, thus seen, is not initially a disease of cell multiplication, but a disease of differentiation. The evidence for this point of view should now be explored. BioEssays 27:833–838, 2005. © 2005 Wiley Periodicals, Inc. (shrink)

[opening paragraph]: In his keynote paper David Chalmers defines ‘the hard problem’ by posing certain ‘Why’ questions about consciousness? Such questions must be posed within an appropriate setting. The way of science is to try to deduce the answer to many such questions from a few well defined assumptions. Much about nature can be explained in terms of the principles of classical mechanics. The assumptions, in this explanatory scheme, are that the world is composed exclusively of particles and fields governed (...) by specified mathematical laws that refer neither to any individual person, nor to anyone’s experiences. These physical laws are supposed to be such that particles and fields, acting in concert, can form causally efficacious real functional entities such as driveshafts and propellers. Similarly, surges of electrical and mechanical activity in appropriately designed material substrates, composed of particles and fields acting in concert, could implement, in the world of matter, complex functional structures and long sequences of logical operations. Thus it is conceivable that all of our behaviour, and all of the internal processing that occurs in our bodies and brains could be deduced, at least in principle, from the principles of classical mechanics and appropriate boundary conditions. -/- Contents: 1. Introduction: Philosophical Setting 2. Quantum Model of the Mind/Brain 3. Person and Self 4. Meeting Baars's Criteria for Consciousness 5. Qualia 6. Free-Will. (shrink)

One of the great merits ofOn Complicity and Compromiseis that it wades into specific swamps where ordinary theorists fear to slog. It is persuasive that in general it can be right sometimes to be complicit in wrongdoing by others through causally contributing to the wrongdoing, but not sharing its purpose, if by being involved one can reasonably expect to lessen the extent of the wrong that would otherwise be suffered by the victims. I focus on whether the book's general thesis (...) is applicable to torture, which depends on what torture and the torture situation are in fact like. I focus on the case to which the chapter several times refers: the innovative CIA paradigm of torture. First, to the extent that the paradigm, which is predominantly mental, or psychological, torture succeeds in its goal of producing regression to a compliant state, the physician would be unable to rely on the torture victim's expressions of preferences or interests as authentically his own. Second, since disorientation plays such a large role in the CIA's style of torture (adopted at Guantanamo by the military), the authorities would refuse to allow a stable relationship to be built up with any one doctor by any victim, making comprehension of the victim's preferences difficult. Third, even if the doctor could somehow judge what the victim's genuine interests were, the control of the situation is much too totalistic to allow the physician any action independent of what the torture regime requires. (shrink)