The quantum theoretical concepts of modular momentum and dynamical non-locality, which were introduced four decades ago, have recently been used to explain single particle quantum interference phenomena. Although the non-local exchange of modular momentum associated with such phenomena cannot be directly observed, it has been suggested that effects induced by this exchange can be measured experimentally using weak measurements of pre- and post-selected ensembles of particles. This paper reports on such an optical experiment that yielded measured weak values that were (...) consistent with the theoretical prediction of an effect induced by a non-local exchange of modular momentum. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Reviewed by:A Bibliography of Bertrand Russell. Volume I: Separate Publications, 1896–1990 by Kenneth Blackwell, Harry RujaG. A. Wedeking and A. D. IrvineKenneth Blackwell and Harry Ruja. A Bibliography of Bertrand Russell. Volume I: Separate Publications, 1896–1990. Pp. lvi + 611. Volume II: Serial Publications, 1890–1990. Pp. xiv + 575. Volume III: Indexes. Pp. xi + 305. London: Routledge, 1994. Cloth, $455.00 the set.As Russell remarked: “It is a curious (...) fact that the most indubitably useful books are those most devoid of literary merit; for example, railway timetables and the telephone [End Page 146] book” (Vol. I, p. xlviii). Even so, since it will be agreed immediately that, for anyone interested in learning more about Russell’s writings, this beautifully crafted bibliography will be extremely useful, it would be a disservice to the authors to imply that it has no more literary merit than a railway timetable. The entire project simply has too much style.When Russell’s bibliographers began their task, fewer than 600 publications by Russell were known. By the time of publication they were able to record 181 of Russell’s books, pamphlets and leaflets, 629 contributions to books, pamphlets, and leaflets primarily authored by others, and approximately 3,550 serial publications of various types. Not being content merely to record the details of these publications, the authors follow each publication through its various editions, impressions, reprints, and translations. This is no mean task, given that Russell’s work has been translated into some 47 languages. In addition, the authors cite related pre-publication materials, give sources for rare and difficult-to-find books and documents, and include a comprehensive index. In short, they do nothing less than provide an authoritative, detailed record of Russell’s published work from 1890 to 1990.As the authors also point out, this is “a bibliography not only of Russell’s writings submitted and actually published, but also of certain other texts. Together they can be regarded as his published thoughts” (I: xix). Thus the bibliography mentions not only Russell’s books, articles, and published letters, but published accounts of his speeches, addresses, press conferences, and interviews; book reviews and recommendations (what Russell called “puffs”) for other people’s books; multiple-signatory letters to the editor and other similar documents; published extracts from Russell’s private correspondence and originally unpublished manuscripts; and audio recordings and films. A mark of the bibliography’s completeness is its catalogue of works that have been spuriously attributed to Russell, including two posthumous “spirit communications” (II: 573–74).The authors candidly describe Russell’s reaction when in 1966 he was shown slips of accumulated new entries: “ ‘I am impressed’, he said, ‘but I don’t think it’s worth it’ “ (I: li). Now, after several decades, we are finally in a position to evaluate Russell’s opinion. To do so, users of the bibliography will want to know the answer to three questions: Is the bibliography complete? Is it accurate? Is it easy to use?With regard to the first two of these three questions, the authors have made a commendable effort to balance comprehensiveness with accuracy (see their discussion of some problem cases, “Introduction,” I: xxvi ff.), rightly preferring accuracy to other desiderata. Concerning ease of use, one issue which comes to mind is whether the inclusion of such minor items as political pamphlets, letters to the editor, and statements made at news conferences, are always worth recording, or whether these items simply make the project so large as to be unmanageable. Once again, upon seeing the completed work, the reader will have little doubt that the correct decision has been made. Researchers interested in Russell’s political involvements and their relation to his more theoretical works, for example, will find this an invaluable resource. All in all, we believe that the bibliography will surpass the requirements of even the most demanding of users. It was, pace Russell, definitely worth it. [End Page 147]As with other volumes associated with the Collected Papers of Bertrand Russell project, these three volumes are beautifully typeset and bound. They will be a pleasure to use for both students and scholars alike for generations to... (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Reviewed by:A Bibliography of Bertrand Russell. Volume I: Separate Publications, 1896–1990 by Kenneth Blackwell, Harry RujaG. A. Wedeking and A. D. IrvineKenneth Blackwell and Harry Ruja. A Bibliography of Bertrand Russell. Volume I: Separate Publications, 1896–1990. Pp. lvi + 611. Volume II: Serial Publications, 1890–1990. Pp. xiv + 575. Volume III: Indexes. Pp. xi + 305. London: Routledge, 1994. Cloth, $455.00 the set.As Russell remarked: “It is a curious (...) fact that the most indubitably useful books are those most devoid of literary merit; for example, railway timetables and the telephone [End Page 146] book” (Vol. I, p. xlviii). Even so, since it will be agreed immediately that, for anyone interested in learning more about Russell’s writings, this beautifully crafted bibliography will be extremely useful, it would be a disservice to the authors to imply that it has no more literary merit than a railway timetable. The entire project simply has too much style.When Russell’s bibliographers began their task, fewer than 600 publications by Russell were known. By the time of publication they were able to record 181 of Russell’s books, pamphlets and leaflets, 629 contributions to books, pamphlets, and leaflets primarily authored by others, and approximately 3,550 serial publications of various types. Not being content merely to record the details of these publications, the authors follow each publication through its various editions, impressions, reprints, and translations. This is no mean task, given that Russell’s work has been translated into some 47 languages. In addition, the authors cite related pre-publication materials, give sources for rare and difficult-to-find books and documents, and include a comprehensive index. In short, they do nothing less than provide an authoritative, detailed record of Russell’s published work from 1890 to 1990.As the authors also point out, this is “a bibliography not only of Russell’s writings submitted and actually published, but also of certain other texts. Together they can be regarded as his published thoughts” (I: xix). Thus the bibliography mentions not only Russell’s books, articles, and published letters, but published accounts of his speeches, addresses, press conferences, and interviews; book reviews and recommendations (what Russell called “puffs”) for other people’s books; multiple-signatory letters to the editor and other similar documents; published extracts from Russell’s private correspondence and originally unpublished manuscripts; and audio recordings and films. A mark of the bibliography’s completeness is its catalogue of works that have been spuriously attributed to Russell, including two posthumous “spirit communications” (II: 573–74).The authors candidly describe Russell’s reaction when in 1966 he was shown slips of accumulated new entries: “ ‘I am impressed’, he said, ‘but I don’t think it’s worth it’ “ (I: li). Now, after several decades, we are finally in a position to evaluate Russell’s opinion. To do so, users of the bibliography will want to know the answer to three questions: Is the bibliography complete? Is it accurate? Is it easy to use?With regard to the first two of these three questions, the authors have made a commendable effort to balance comprehensiveness with accuracy (see their discussion of some problem cases, “Introduction,” I: xxvi ff.), rightly preferring accuracy to other desiderata. Concerning ease of use, one issue which comes to mind is whether the inclusion of such minor items as political pamphlets, letters to the editor, and statements made at news conferences, are always worth recording, or whether these items simply make the project so large as to be unmanageable. Once again, upon seeing the completed work, the reader will have little doubt that the correct decision has been made. Researchers interested in Russell’s political involvements and their relation to his more theoretical works, for example, will find this an invaluable resource. All in all, we believe that the bibliography will surpass the requirements of even the most demanding of users. It was, pace Russell, definitely worth it. [End Page 147]As with other volumes associated with the Collected Papers of Bertrand Russell project, these three volumes are beautifully typeset and bound. They will be a pleasure to use for both students and scholars alike for generations to... (shrink)

A. D. M. Walker; III*—Gratefulness and Gratitude, Proceedings of the Aristotelian Society, Volume 81, Issue 1, 1 June 1981, Pages 39–56, https://doi.org/10.1093.

At the risk of proving myself such a caviller, I want to ask a question which I have seldom heard raised, and which I have never seen discussed in anything that I have read about Berkeley. If I am right, it poses a problem for his immaterialism, not only different, but coming from a different direction, from those objections that are commonly levelled against him. If I am wrong, it will show how right Berkeley was to stress the difficulty of (...) using for one purpose our language which has become fashioned for another. At least, I hope that I shall not fail to be the ‘fair and ingenuous reader’for whom he asked. (shrink)

One of Hume's most well-known works and a masterpiece of philosophy, A Treatise of Human Nature is indubitably worth taking the time to read.

An assessment is made of Rudolf Otto's criticisms of Friedrich Schleiermacher's claim that religious feeling is to be interpreted as essentially involving a feeling of absolute dependence. Otto's criticisms are divided into two kinds. The first suggest that a feeling a dependence, even an absolute one, is the wrong sort of feeling to locate at the heart of religious consciousness. It is argued that this criticism is based on misinterpretations of Schleiermacher's view, which is in fact much closer to Otto's (...) than the latter appreciated. The second kind of criticism suggests that the feeling of absolute dependence cannot play the foundational role assigned to it by Schleiermacher, since it is itself a secondary response. It is argued not only that Otto provides no justification for this criticism, but that Otto's own position is incoherent unless Schleiermacher's view is accepted. (shrink)

The Problem of Perception offers two arguments against direct realism--one concerning illusion, and one concerning hallucination--that no current theory of ...

In this paper I want to examine a view of the Darwinian theory of evolution which was put forward fairly recently by A. R. Manser. His approach is of interest not only in itself, but also because it may be expanded to raise some fundamental questions about the nature of the science of biology in general. I shall not consider these further implications here, but shall concentrate on an examination of his thesis in the context in which it is raised. (...) My paper falls into two sections. In the first I shall state Manser's thesis and some of the arguments with which he supports it, and shall try to show how a series of objections raised by A. G. N. Flew and K. Connolly may be answered. In the second I shall offer on my own account a positive argument to provide a possible basis for his point of view, with the aim of indicating why the theory should be of the kind he suggests, and what form the study of evolution must take. (shrink)

First published in 1991. Routledge is an imprint of Taylor & Francis, an informa company.

This third volume of Classical and Medieval Logic Texts shows that Arabic philosophy and especially Arabic logic--which up to now has fared rather badly--can be made fascinating. To do this requires a marvelous blend of erudition, clarity and a firm grasp of basic issues. Zimmermann offers us this unusual combination in his lively introduction to two carefully translated texts of the most famous Arabic logician.

An attempt is made to pinpoint the way in which perception is related to belief. Although, for familiar reasons, it is not true to say that we necessarily believe in the existence of the objects we perceive, nor that they actually have their ostensible characteristics, it is argued that the relation between perception and belief is more than merely contingentThere are two main issues to address. the first is that ‘collateral’ beliefs may impede perceptual belief. It is argued that this (...) still assigns an essential role to belief in perception, though the belief may be of an attenuated form. the second is Fred Dretske's claim that even attenuated belief may be entirely absent from perception. It is argued that (a) ‘non‐epistemic’perception can be understood only by employing the concept of ‘epistemic’perception; (b) that the former can occur only partially—i.e., within perceptions that are otherwise epistemic; and (c) that by switching attention from the perception of objects to the Phenomenological tradition's concern with the perception of world, we can see that perception must be entirely permeated with ‘doxastic’force. (shrink)

An attempt is made to pinpoint the way in which perception is related to belief. Although, for familiar reasons, it is not true to say that we necessarily believe in the existence of the objects we perceive, nor that they actually have their ostensible characteristics, it is argued that the relation between perception and belief is more than merely contingent.There are two main issues to address. The first is that ‘collateral’ beliefs may impede perceptual belief. It is argued that this (...) still assigns an essential role to belief in perception, though the belief may be of an attenuated form. The second is Fred Dretske’s claim that even attenuated belief may be entirely absent from perception. It is argued that ‘non-epistemic’ perception can be understood only by employing the concept of ‘epistemic’ perception; that the former can occur only partially---i.e., within perceptions that are otherwise epistemic; and that by switching attention from the perception of objects to the Phenomenological tradition’s concern with the perception of world, we can see that perception must be entirely permeated with ‘doxastic’ force. (shrink)

The paper examines a single, apparently simple argument for the existence of incompatibilities between the virtues as traits of character. This argument appeals not to empirical truths about human psychology or human nature but to the possibility of conflict between the exercise of different virtues in action. There are, for example, situations in which we can exercise the virtue of truthfulness only at the expense of not exercising the virtue of tact, as when we are asked a question to which (...) the straightforward answer will pain our questioner. The person who in these situations would give a straightforward answer possesses the virtue of truthfulness to a higher degree than the person who would respond more evasively, whereas the latter person possesses the virtue of tact to a higher degree than the former. But since the two responses are mutually exclusive, it follows that the degree to which we possess the virtue of truthfulness must, at least in some measure, correlate inversely with the degree to which we possess the virtue of tact. And similarly for many other pairs of virtues. My paper focusses on the two cardinal assumptions of this argument, viz., (i) that sometimes the exercise of one virtue can conflict with the exercise of another, and (ii) that the degree to which a person possesses a virtue correlates directly with the extent of its exercise, and defends both assumptions against a variety of objections which allege that, in different ways, they are insensitive to the complexity of the virtues. (shrink)

There are many possible ways of approach to philosophy, and there is also an impossible one, though one that has often been tried. That the philosopher can somehow spin his philosophy out of what he finds inside himself; that he has some private internal source of information in virtue of which he can decide what the Universe must be, without needing to take the trouble to look at it, is a belief that dies hard. But it is now dying, if (...) not dead, so that it is hardly necessary to refute it in detail. It should suffice to say that anybody who cherishes the belief will not find anything to interest him in what follows. I shall simply assume that the philosopher is, what we all are to some extent, a spectator of the world and of man's life in it and a commentator on what he sees. Where the philosopher differs from others is in the kind of interest he takes in the facts, not in the kind of facts that are there to be interested in. (shrink)