The extended system method of Nosé and Hoover for the control of temperature of a classical ensemble if applied to the de Broglie-Bohm-Vigier formulation of quantum mechanics. This allows for the simulation of the motion of a quantum particle at a constant preset temperature. A specific algorithm for numerical solution of the resulting equations of motion, based on the application of the methods of molecular dynamics simulation, is provided.

The reign of the ῾Abbsid caliph al-Mu῾taṣim is usually recognized among historians for its military character with the recruitment of new Turkic troops, the foundation of Smarr᾿ as a new capital, and the campaign against ᾿Ammriyya. Chronicle accounts about al-Mu῾taṣim, however, also hold potential as a topic for narrative criticism. This article analyzes the little examined use of military history for literary and allusive purposes by medieval narrators. The overall accomplishments of al-Mu῾taṣim were dramatized in the classical texts within a (...) matrix of tensions that permeated his reign, including: the caliph's backing of the Miḥna while undertaking jihd against the Byzantines and the Khurramiyya, his sudden reversal for the fortunes of al-Afshn in spite of the latter's military skill, and the lingering mistrust between the ῾Alids and the ῾Abbsids, Persian officials and the Arab leadership. The article shows how the narratives of Ṭabar in particular display a careful construction which deployed these various dimensions as objects for readership reflection to varying degrees of criticism or support. (shrink)

Liberalism is commonly believed, especially by its exponents, to be opposed to interference by way of enforcing value judgments or concerning itself with the individual's morality. My concern is to show that this is not so and that liberalism is all the better for this. Many elements have contributed to liberal thought as we know it today, the major elements being the liberalism of which Locke is the most celebrated exponent, which is based upon a belief in natural, human rights; (...) the liberalism of which Kant is the best known exponent, which is based on respect for persons as ends in themselves; and the liberalism of Bentham and the Mills, which is based upon utilitarian ethical theories and most especially with concern for pleasure and the reduction of pain. These different elements of liberalism have led to different emphases and different political and social arrangements, but all have involved a concern to safeguard values and to use force to that end. Today they constitute strands of thought which go to make up liberal thought as we now know it, hence it is not simply a historical fact about liberalism, but a fact about its philosophical basis, that liberalism is firmly involved in certain value and moral commitments. In the remainder of this paper I shall seek to bring this out. (shrink)

The modern corpuscular theory of radiation was born in 1905 when Einstein advanced his light quantum hypothesis; and the steps by which Einstein's hypothesis, after years of profound scepticism, was finally and fully vindicated by Arthur Compton's 1922 scattering experiments constitutes one of the most stimulating chapters in the history of recent physics. To begin to appreciate the complexity of this chapter, however, it is only necessary to emphasize an elementary but very significant point, namely, that while Einstein based his (...) arguments for quanta largely on the behaviour of high-frequency black body radiation or ultra-violet light, Compton experimented with X-rays. A modern physicist accustomed to picturing ultra-violet light and X-radiation as simply two adjacent regions in the electromagnetic spectrum might regard this distinction as hair-splitting. But who in 1905 was sure that X-rays and γ-rays are far more closely related to ultra-violet light than to α-particles, for example ? This only became evident after years of painstaking research, so that moving without elaboration from Einstein's hypothesis to Compton's experiments automatically eliminates from consideration an important segment of history—a segment in which a major role was played by William Henry Bragg. (shrink)

Umerez’s analysis made me aware of the fundamental differences in the culture of physics and molecular biology and the culture of semiotics from which the new field of biosemiotics arose. These cultures also view histories differently. Considering the evolutionary span and the many hierarchical levels of organization that their models must cover, models at different levels will require different observables and different meanings for common words, like symbol, interpretation, and language. These models as well as their histories should be viewed (...) as complementary rather than competitive. The relation of genetic language and human language is the central issue. They are separated by 4 billion years and require entirely different models. Nevertheless, these languages have in common a unique unlimited expressive power that allows open-ended evolution and creative thought. Understanding the nature of this expressive power and how it arises remains a basic unsolved problem of biosemiotics. (shrink)

J. H. Hexter, an American historian of early seventeenth-century history, terms himself whiggish and claims whiggishness is returning after the misguided popularity of Marxism. The distinction "whiggish" is more elusive than his claim suggests, and the accuracy of its application to Hexter's claim is unclear. Three characteristics commonly assigned to whig interpretation by its critics can be seen as reflections of broader, unresolved historical issues. These are: attention to political and constitutional issues; a tendency to refer to the present in (...) interpreting the past; and a belief in inevitability. It is difficult to ascertain whether Hexter's attention to political matters is a result of his view of them as intrinsically important to historical inquiry or as particularly relevant to historical accounts of Stuart England. The charge of presentism cannot confidently be made against him, as he is not guilty of anything as crude as anachronism, and subtle presentism is neither avoidable nor necessarily reprehensible. Inevitabilism is not only difficult to define, it is not displayed by Hexter. If he displays the weaknesses of whiggishness it is only through implication, in the body of ideas underlying his text. (shrink)

Miss G. E. M. Anscombe has said that, in order for progress to be made in ethics, we must have some determinate idea of ‘human flourishing.’ I want to cite in what follows the work of a number of writers in the psychiatric field who seem to me to throw light on just what it is for a human individual to flourish, for a human community to flourish, and for a human individual to flourish in relation to or in spite (...) of his community. (shrink)

Entities of many kinds, not just material things, have been credited with parts. Armstrong, for example, has taken propositions and properties to be parts of their conjunctions, sets to be parts of sets that include them, and geographical regions and events to be parts of regions and events that contain them. The justification for bringing all these diverse relations under a single ‘part–whole’ concept is that they share all or most of the formal features articulated in mereology. But the concept (...) has also prompted an ontological thesis that has been expressed in various ways: that wholes are ‘no ontological addition’ to their parts ; that to list both a whole and its parts is ‘double counting’; and that there is ‘no more’ to a whole than its parts: for example, that there is no more to a conjunction than the conjuncts that are its parts, and whose truth or falsity determines whether it is true or false. For brevity, I shall express the thesis in the last of these ways, as the claim that entities with parts are ‘nothing but’ those parts. (shrink)

Epistemologists have not usually had much to say about believing ‘in’, though ever since Plato's time they have been interested in believing ‘that’. Students of religion, on the other hand, have been greatly concerned with belief ‘in’, and many of them, I think, would maintain that it is something quite different from belief ‘that’. Surely belief ‘in’ is an attitude to a person, whether human or divine, while belief ‘that’ is just an attitude to a proposition? Could any difference be (...) more obvious than this? And if we over-look it, shall we not be led into a quite mistaken analysis of religious belief, at any rate if it is religious belief of the theistic sort? On this view belief ‘in’ is not a propositional attitude at all. (shrink)

How does the study of society relate to the study of the people it comprises? This longstanding question is partly one of method, but mainly one of fact, of how independent the objects of these two studies, societies and people, are. It is commonly put as a question of reduction, and I shall tackle it in that form: does sociology reduce in principle to individual psychology? I follow custom in calling the claim that it does ‘individualism’ and its denial ‘holism’.

Like many people these days, I believe there is no general moral obligation to obey the law. I shall explain why there is no such moral obligation – and I shall clarify what I mean when I say there is no moral obligation to obey the law – as we proceed. But also like many people, I am unhappy with a position that would say there was no moral obligation to obey the law and then say no more about the (...) law's moral significance. In our thinking about law in a resonably just society, we have a strong inclination to invest law with a sort of moral halo. It does not feel right to suggest that law is a morally neutral social fact, nor to suggest that law is merely a useful social technique. In this essay, I shall try to account in part for law's moral halo. Because I share the widespread inclination to invest law with this halo, I shall not be interested in a merely historical account of how we come to see law with a halo – a pure “error theory” of law's halo, if you will. I want to justify the halo. On the other hand, the main way to justify the halo is to get clear just what law's moral significance is. It is unlikely that at the end of the process of clarification the halo will have exactly the shape or luminance that it had at the beginning. (shrink)

Once God is no longer recognized as the ground and the enforcer of morality, the character and force of morality undergoes a significant change, a point made by G.E.M. Anscombe in her observation that without God the significance of morality is changed, as the word criminal would be changed if there were no criminal law and criminal courts. There is no longer in principle a God's-eye perspective from which one can envisage setting moral pluralism aside. In addition, it becomes impossible (...) to show that morality should always trump concerns of prudence, concerns for one's own non-moral interests and the interests of those to whom one is close. Immanuel Kant's attempt to maintain the unity of morality and the force of moral obligation by invoking the idea of God and the postulates of pure practical reason are explored and assessed. Hegel's reconstruction of the status of moral obligation is also examined, given his attempt to eschew Kant's thing-in-itself, as well as Kant's at least possible transcendent God. Severed from any metaphysical anchor, morality gains a contingent content from socio-historical context and its enforcement from the state. Hegel's disengagement from a transcendent God marks a watershed in the place of God in philosophical reflections regarding the status of moral obligations on the European continent. Anscombe is vindicated. Absent the presence of God, there is an important change in the force of moral obligation. (shrink)

This is a collection of essays on themes of legal philosophy which have all been generated or affected by Hart's work. The topics covered include legal theory, responsibility, and enforcement of morals, with contributions from Ronald Dworkin, Rolf Sartorius, Neil MacCormach, David Lyons, Kent Greenawalt, Michael Moore, Joseph Raz, and C.L. Ten, among others.

The following brief memoir of Wittgenstein needs a few preliminary words of explanation. Among those who attended his lectures and discussions in the years it covers was D. G. James, who later became Professor of English at Bristol University and then Vice-Chancellor of Southampton University. I met him both in Bristol and Southampton, and on one occasion suggested to him that some of us who had known Wittgenstein, but who had not become professional philosophers, might write down our recollections of (...) him, and that he and I should start. What prompted the suggestion was, I think, the publication of Norman Malcolm's book, and a feeling that the non-professionals might have something to contribute to the assessment of Wittgenstein, particularly as a person. I wrote a preliminary draft and sent it to James; but he never responded, there was much else to do, I let the matter rest, and now James is dead. I wrote in about the year 1960 on holiday and away from any books of reference and from my own notes of Wittgenstein's lectures and conversations. I have shown the typescript to a few interested people, but because of its preliminary and unfinished nature have not previously thought of publication. It has recently been suggested to me that it might be of more general interest, and I publish it now as it was written, with one or two trifling alterations. I am well aware of its limitations. It was intended to give an impression of Wittgenstein as a person rather than as a philosopher, and the rather miscellaneous collection of remarks in section 3 have that in view rather than any more strictly ‘philosophical’ intention. Others may well question some of the detail and disagree with some of the opinions expressed. And there are some things which I might put rather differently today. But if the memoir has any interest it is best left as it was written. (shrink)

Early in Peter Abelard's Dialogue between a Philosopher, a Jew, and a Christian, the philosopher and the Christian easily come to agreement about what the point of ethics is: “[T]he culmination of true ethics … is gathered together in this: that it reveal where the ultimate good is and by what road we are to arrive there.” They also agree that, since the enjoyment of this ultimate good “comprises true blessedness,” ethics “far surpasses other teachings in both usefulness and worthiness.” (...) As Abelard understood them, both fundamental elements of his twelfth-century ethical culture — Greek philosophy and Christian religion — held a common view of the nature of ethical inquiry, one that was so obvious to them that his characters do not even state it in a fully explicit way. They take for granted, as we take the ground we stand on, the premise that the most important function of ethical theory is to tell you what sort of life is most desirable, or most worth living. That is, the point of ethics is that it is good for you, that it serves your self-interest. (shrink)

May I first say, Mr Chairman, that I regard it as a great honour to have been invited to take part in this Conference? I speak to you as a philosopher who happens to be interested both in religion and in psychical research. But I am afraid I am going to discuss some questions which it is ‘not done’ to talk about.

My title has been taken from the following passage in Wittgenstein's Philosophical Investigations : Describe the aroma of coffee—why can't it be done? Do we lack the words? And for what are words lacking?—But how do we get the idea that such a description must after all be possible? Have you ever felt the lack of such a description? Have you tried to describe the aroma and not succeeded?

In 1954 F. R. Leavis wrote to the Times Literary Supplement taking issue with one of its reviewers. The reviewer had contrasted Leavis's approach to Shakespeare with that of Empson and Bradley. The latter, the reviewer had said, ‘like the plain man, or the audience in a theatre, cannot help considering the situation [in one of Shakespeare's plays] as “actual” and the characters as “real”’. Leavis, the reviewer had implied, treats the situation and characters somewhat differently.

This is a field-based disguised case which describes a dilemma faced by the protagonists; do they continue to do business with a land developer who has assisted them in the past when now the developer chooses to, against their recommendations, also do business with their ex-business partner? The problem for the characters in question is whether or not to work on a project that will yield them a net profit of $4 million dollars given the fact it would require them (...) to work in the same development as their former business associate. The central characters are afraid that their ex-partner will be a destabilizing factor in the development of the project and that their work sites will be in jeopardy of being vandalized. Several factors complicate this situation including: the developer’s desire for a quick land purchase, the developer’s changing the discount rate from 20% to 10% perhaps based upon difficulties that surrounded the first land deal, the protagonists’ plans to build their own homes in this new development, and the negative relationship between the protagonists and the ex-business partner. The case has a difficulty level appropriate for a sophomore or junior level course. The case is designed to be taught in one class period and is expected to require between three to five hours of outside preparation by students. (shrink)