This chapter contains sections titled: Biography: John Stuart Mill (1806–1873) Introduction to Part I, Mill's Moral and Political Philosophy Introduction to Part II, Mill's Logic, Metaphysics, and Epistemology.

The articles in this special issue of the yearbook Logical Analysis and History of Philosophy all concern, in one way or another, Hume’s epistemology and metaphysics. There are discussions of our knowledge of causal powers, the extent to which conceivability is a guide to modality, and testimony; there are also discussions of our ideas of space and time, the role in Hume’s thought of the psychological mechanism of ‘completing the union’, the role of impressions, and Hume’s argument against the (...) claim that our perceptions are ‘locally conjoined’ with any entity (namely, a soul). (shrink)

Mill's views in epistemology were very much the culmination of radical British empiricism, and its natural transition to certain forms of logical positivism. This paper involves an overview and critical evaluation of Mill's foundationalism, his views on inductive reasoning and attempt to “reduce” deductive reasoning to inductive reasoning, his attempt to solve the epistemological problems of perception by reducing talk of physical objects to talk about the permanent possibility of sensations (his phenomenalism), his views on knowledge of (...) necessary truths, and his famous “methods” for establishing truths about causal connection. (shrink)

A critical discussion of selected chapters of the first volume of Scott Soames’s Philosophical Analysis in the Twentieth Century. It is argued that this volume falls short of the minimal standards of scholarship appropriate to a work that advertises itself as a history, and, further, that Soames’s frequent heuristic simplifications and distortions, since they are only sporadically identified as such, are more likely confuse than to enlighten the student. These points are illustrated by reference to Soames’s discussions of Russell’s logical (...) system and the place of the theory of descriptions in his ontological development. It is then argued that Soames’s interpretation of the point of G.E. Moore’s famous “proof” of an external world, while not straightforwardly undermined by the textual evidence, is nonetheless questionable, and plausibly overlooks what is novel in Moore’s discussion. This, it is argued, in his attempt to offer a common sense “refutation of idealism”, rather than (as is more commonly supposed) an anti-skeptical argument “from differential certainty”. (shrink)

Avicenna is the most influential figure in the intellectual history of the Islamic world. This book is the first comprehensive study of his theory of science, which profoundly shaped his philosophical method and indirectly influenced philosophers and theologians not only in the Islamic world but also throughout Christian Europe and the medieval Jewish tradition. A sophisticated interpreter of Aristotle’s _Posterior Analytics_, Avicenna took on the ambitious task of reorganizing Aristotelian philosophy of science into an applicable model of scientific reasoning, striving (...) to identify conditions of certainty for scientific assertions and conditions of adequacy for real definitions. Riccardo Strobino combines philosophical and textual analysis to explore the scope and nature of Avicenna’s contributions to the logic of scientific reasoning in his effort to recalibrate Aristotle’s model and overcome some of its internal limitations. Focusing on a broad array of philosophical innovations at the intersection of logic, metaphysics, and epistemology, this book casts light on an essential aspect of the thought of the preeminent philosopher and physician of the Islamic world. (shrink)

Avicenna’s ground-breaking view of logic as both a tool for other sciences and a science in its own right has already attracted scholars’ attention and has been studied in several different respects. The present paper aims to address a specific issue entailed by considering logic as a science in its own right: that is, assessing the relation in which logic as a science stands to the other sciences, and particularly to metaphysics and psychology. The inquiry will focus on a fundamental, (...) yet tricky, passage of chapter I.4 of Avicenna’s Kitāb al-Madḫal, the opening work of his most comprehensive philosophical summa, the Kitāb al-Šifāʾ (Book of Healing). Due to the obscurity of some of Avicenna’s references, chapter I.4 “on the subject-matter of logic” has stimulated numerous attempts at interpretation from the Middle Ages to today. In this paper, I will attempt to provide a new reading of the chapter in light of Avicenna’s definition of the epistemological status of science in Burhān II.7. (shrink)

_Knowing Reality_ is a guided introduction to metaphysics and epistemology. Each of the book’s twelve chapters contains extended excerpts from influential historical and contemporary philosophers, as well as a guided exposition of their views and their locations within the logical space of the issues at play. Topics are introduced through engaging thought experiments, with relevant philosophical puzzles sprinkled throughout. Complex issues are explained using down-to-earth examples, with illustrations provided to connect with readers and assist them in understanding the sophisticated (...) concepts under discussion. (shrink)

Commentators regularly attribute to Frege realist, idealist, and quietist responses to metaphysical questions concerning the abstract objects he calls ‘thoughts’. But despite decades of effort, the evidence offered on behalf of these attributions remains unconvincing. I argue that Frege deliberately avoids commitment to any of these positions, as part of a metaphysical separatist policy motivated by the fact that logic is epistemologically autonomous from metaphysics. Frege’s views and arguments prove relevant to current attempts to argue for epistemological autonomy, particularly that (...) of ethics. (shrink)

This chapter contains sections titled: Mill on Our Knowledge of the External World Mill on Our Knowledge of “Necessary” Truths Mill's “Reduction” of Deductive Reasoning to Inductive Reasoning Mill on the Ground of Inductive Reasoning Mill's Methods Further Reading.

An interesting collection of essays, letters, and journal excerpts, not all of which are readily available. Mill's famous essay "Utilitarianism" rounds out a series of lesser known writings on Blakely, Plato, Sedgwick, de Tocqueville, Whewell, and Hamilton. Chapters from Mill's Logic also included are "Of the Logic of Practice, or Art; Including Morality and Policy" and "Of Liberty and Necessity." The editor has added helpful introductory comments to each selection which relate them to one another, a thirty page (...) introduction, and a convenient, annotated bibliography.—P. S. (shrink)

Contemporary philosophical discourse has deeply problematized the possibility of absolute existence. Hegel’s Foundation Free Metaphysics demonstrates that by reading Hegel’s Doctrine of the Concept in his Science of Logic as a form of Absolute Dialetheism, Hegel’s logic of the concept can account for the possibility of absolute existence. Through a close examination of Hegel’s concept of self-referential universality in his Science of Logic, Moss demonstrates how Hegel’s concept of singularity is designed to solve a host of metaphysical and epistemic paradoxes (...) central to this problematic. He illustrates how Hegel’s revolutionary account of universality, particularity, and singularity offers solutions to six problems that have plagued the history of Western philosophy: the problem of nihilism, the problem of instantiation, the problem of the missing difference, the problem of absolute empiricism, the problem of onto-theology, and the third man regress. Moss shows that Hegel’s affirmation and development of a revised ontological argument for God’s existence is designed to establish the necessity of absolute existence. By adopting a metaphysical reading of Richard Dien Winfield’s foundation free epistemology, Moss critically engages dominant readings and contemporary debates in Hegel scholarship. Hegel’s Foundation Free Metaphysics will appeal to scholars interested in Hegel, German Idealism, 19th- and 20th-century European philosophy, metaphysics, epistemology, and contemporary European thought. (shrink)

While there are good reasons to think that Hegel would not engage with modern scepticism in the Science of Logic, this article argues that he nevertheless does so in a way that informs the text's conception of logic as the latter pertains to metaphysics. Hegel engages with modern scepticism's general concerns that philosophy should begin without unexamined presuppositions and should come to attain not only knowledge of truth, but corresponding second-order knowledge: knowledge of knowing truth. These concerns inform two needs (...) that Hegel formulates for first philosophy, which logic—by unifying with metaphysics, which is traditionally synonymous with first philosophy—is to satisfy. However, logic, for the Logic, is unified with metaphysics as a science of absolute knowing, the form of thinking involved in traditional metaphysics. As such, logic, for the Logic, is neither anti-metaphysical nor reducible to metaphysics, but is rather a science of metaphysical thinking, which, for Hegel, includes metaphysics. The article emphasizes how Hegel's construal of logic as a science of absolute knowing avoids running into the ‘swimming problem’ that Hegel raises against, broadly, epistemological forms of first philosophy. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Reviewed by:Avicenna's Theory of Science: Logic, Metaphysics, Epistemology by Riccardo StrobinoThérèse-Anne DruartRiccardo Strobino. Avicenna's Theory of Science: Logic, Metaphysics, Epistemology. Oakland: University of California Press, 2021. Pp. xvi + 428. Hardback, $95.00.Strobino's remarkable book does not simply present Avicenna's theory of science; it also highlights the importance of demonstration not only for logic but also for metaphysics and epistemology. Hence, Strobino's work is essential to appreciate (...) and better understand Avicenna's philosophy as a whole.Strobino grounds his research on Avicenna's theory of science in his Book of Demonstration in the Shifā', which focuses on Aristotle's Posterior Analytics. Taking into account the lack of any translation into English or any other main modern language as well as the lack of a full medieval Latin translation (only chapter 7 of book 3 exists in a medieval Latin version) of Avicenna's text, Strobino kindly provides in appendix C (357–71) a detailed "map" of this text, useful not only to readers who cannot handle Arabic but even to those who can, as the [End Page 326] text is so rich and complex. A simple but careful look at this map confirms what Strobino makes clear and insists upon: Avicenna greatly develops, enriches, completes, and even outgrows some of Aristotle's views. The Book of Demonstration is far more than a commentary on the Posterior Analytics; it is a complete reworking of it.Strobino shows that Avicenna grounds his theory of demonstration and science on two basic notions—conception (tasawwur) and assertion (tasdīq, which some other scholars translate as "assent")—and so gives a unified approach to his theory. Scientific conceptions require better understanding of definition and description. Avicenna builds definitions and descriptions on essentialism and, therefore, grounds them in metaphysics. As for scientific assertions, in contradistinction to nonscientific ones, they must be necessary and give the cause. Therefore, Avicenna places great importance on modality and develops modal syllogisms, whereas Aristotle focused on categorical syllogisms and neglected hypothetical and disjunctive syllogisms. Avicenna also elaborates a sophisticated account of modality and its metaphysical implications. Furthermore, he broadens and enriches the appreciation of causality and explanation. These developments, according to Strobino, lead Avicenna to set forth an intricate division and hierarchy of the sciences under metaphysics, which provides their ultimate principles and allows for a unified understanding of the sciences while respecting their particularities.According to Strobino, Avicenna is keen to develop a theory of science that gives a good account of science as it is practiced. Strobino carefully shows how Avicenna's theory better reflects this practice than does Aristotle's.Strobino does not simply highlight how much Avicenna distances himself from Aristotle and goes far beyond what the Posterior Analytics yields, but also shows how much Avicenna relies on points adumbrated by his predecessor al-Fārābī in his own Book of Demonstration.The way Strobino through his analysis of demonstration links Avicenna's understanding of logic, epistemology, and metaphysics underscores the coherence and unity of Avicenna's philosophy. Scholars were aware of the importance of demonstration for Avicenna in various philosophical fields, but until the release of this book, they seemed not to have fully grasped the centrality and essential role played by the Avicennian understanding and focus on demonstration.Of course, Strobino does not limit himself to an analysis of passages in the Book of Demonstration. He has an encompassing knowledge of Avicenna's texts and uses them well to flesh out and enrich what remains terse in the Book of Demonstration. He even takes into account the way one of his successors, al-Tūsī, reads him. He also shows an extensive and wide-ranging knowledge of Aristotle's texts and of Aristotelian scholarship, as well as an interest in the Greek commentators and Galen and their relevance for interpreting Avicenna.Avicenna's Theory of Science is not an easy book to read, as it is often very technical, particularly when dealing with purely logical points or issues, but reading it is rewarding if one does so slowly and meditatively. The author, in fact, illuminates difficult matters but does not waste words. From... (shrink)

A recent logical anti-exceptionalist trend proposes that logical theories are revisable in the same manner as scientific theories, either on grounds of the method of theory selection or on what counts as evidence for this revision. Given this approximation of logic and science, the present essay analyzes the commitments of both these varieties and argues that, as it currently stands, this kind of anti-exceptionalism is committed to scientific realism, that is, to realism about some unobservable entities evoked in logical theories. (...) The essay argues that anti-exceptionalism cannot be separated into metaphysical and epistemological varieties, and proposed rather to label anti-exceptionalists views either broadly in terms of theory revision, or narrowly in terms of logic’s affinity with science. (shrink)

This volume covers a wide range of topics that fall under the 'philosophy of quantifiers', a philosophy that spans across multiple areas such as logic, metaphysics, epistemology, and even the history of philosophy. It discusses the import of quantifier variance in the model theory of mathematics. It advances an argument for the uniqueness of quantifier meaning in terms of Evert Beth’s notion of implicit definition, and clarifies the oldest explicit formulation of quantifier variance: the one proposed by Rudolf Carnap. (...) -/- The volume further examines what it means that a quantifier can have multiple meanings, and addresses how existential vagueness can induce vagueness in our modal notions. Finally, the book explores the role played by quantifiers with respect to various kinds of semantic paradoxes, the logicality issue, ontological commitment, and the behavior of quantifiers in intensional contexts. ​. (shrink)

This chapter contains sections titled: Radical Empiricism Further Reading.

There are two general questions which many views in the philosophy of mathematics can be seen as addressing: what are mathematical objects, and how do we have knowledge of them? Naturally, the answers given to these questions are linked, since whatever account we give of how we have knowledge of mathematical objects surely has to take into account what sorts of things we claim they are; conversely, whatever account we give of the nature of mathematical objects must be accompanied by (...) a corresponding account of how it is that we acquire knowledge of those objects. The connection between these problems results in what is often called "Benacerraf's Problem", which is a dilemma that many philosophical views about mathematical objects face. It will be my goal here to present a view, attributed to Richard Dedekind, which approaches the initial questions in a different way than many other philosophical views do, and in doing so, avoids the dilemma given by Benacerraf's problem. (shrink)

What good is logic? -- Seventeen ways this book is different -- The two logics -- All of logic in two pages : an overview -- The three acts of the mind -- I. The first act of the mind : understanding -- Understanding : the thing that distinguishes man from both beast and computer -- Concepts, terms and words -- The problem of universals -- The comprehension and extension of terms -- II. Terms -- Classifying terms -- Categories -- (...) Predicables -- Division -- III. Material fallacies -- Fallacies of language -- Fallacies of diversion -- Fallacies of oversimplification -- Fallacies of argumentation -- Inductive fallacies -- Procedural fallacies -- Metaphysical fallacies -- Short story : love is a fallacy -- IV. Definition -- The nature of definition -- The rules of definition -- The kinds of definition -- The limits of definition -- V. Second act of the mind : judgment -- Judgments, propositions, and sentences -- What is truth? -- The four kinds of categorical propositions -- Logical form -- Euler's circles -- Tricky propositions -- The distribution of terms -- VI. Changing propositions -- Immediate inference -- Conversion -- Obversion -- Contraposition -- VII. Contradiction -- What is contradiction? -- The square of opposition -- Existential import -- Tricky propositions on the square -- Some practical uses of the square of opposition -- VIII. The third act of the mind : reasoning -- What does reason mean? -- The ultimate foundations of the syllogism -- How to detect arguments -- Arguments vs. explanations -- Truth and validity -- IX. Different kinds of arguments -- Three meanings of because -- The four causes -- A classification of arguments -- Simple argument maps -- Deductive and inductive arguments -- Combining deduction and induction : socratic method -- X. Syllogisms -- The structure and strategy of the syllogism -- The skeptics objection to the syllogism -- The empiricist's objection to the syllogism -- Demonstrative syllogisms -- How to construct convincing syllogisms -- XI. Checking syllogisms for validity -- By Euler's circles -- By Aristotle's six rules -- Barbara Celarent : mood and figure -- Venn diagrams -- XII. More difficult syllogisms -- Enthymemes : abbreviated syllogisms -- Sorites : chain syllogisms -- Epicheiremas : multiple syllogisms -- Complex argument maps -- XIII. Compound syllogisms -- Hypothetical syllogisms -- Reductio ad absurdum arguments -- The practical syllogism : arguing about means and ends -- Disjunctive syllogisms -- Conjunctive syllogisms -- Dilemmas -- XIV. Induction -- What is induction? -- Generalization -- Causal induction : Mill's methods -- Scientific hypotheses -- Statistical probability -- Arguments from analogy -- A fortiori and a minore arguments -- XV. Some practical applications of logic -- How to write a logical essay -- How to write a socratic dialogue -- How to have a socratic debate -- How to use socratic method on difficult people -- How to read a book socratically -- XVI. Some philosophical applications of logic -- Logic and theology -- Logic and metaphysics -- Logic and cosmology -- Logic and philosophical anthropology -- Logic and epistemology -- Logic and ethics. (shrink)

Why must we respect others’ rights to dispute scientific knowledge such as that the Earth is round, or that humans evolved, or that anthropogenic greenhouse gases are warming the Earth? In this paper, I argue that in On Liberty Mill defends the freedom to dispute scientific knowledge by appeal to a novel social epistemic rationale for free speech that has been unduly neglected by Mill scholars. Mill distinguishes two kinds of epistemic warrant for scientific knowledge: 1) the positive, direct evidentiary (...) warrant that scientific experts construct for their knowledge by applying the methods Mill had set out in his A System of Logic, Ratiocinative and Inductive, and 2) a social testimonial warrant that the non-expert “public” has for what Mill refers to as their “rational[ly] assur[ed]” beliefs on scientific subjects. Mill does not argue that scientific claims can never be proven true with complete practical certainty to scientific experts, nor does he argue that scientists must engage in free debate with critics such as flat-earthers in order to fully understand the grounds of their scientific knowledge. Instead, Mill argues that in the absence of the freedom to dispute scientific knowledge, non-experts cannot establish that scientific experts are credible sources of testimonial knowledge. To establish the credibility of scientific expert speakers, non-expert audiences must have a rational assurance, Mill argues, that experts have satisfactory answers to objections that might undermine the positive, direct evidentiary proof of scientific knowledge. But since non-experts cannot distinguish objections that undermine such expert proof from objections that do not, censorship of any objection — even the irrelevant objections of literal or figurative flat-earthers — will prevent non-experts from determining whether scientific expert speakers are credible. Hence, while censoring irrelevant objections would not undermine the positive, direct evidentiary warrant that scientific experts have for their knowledge, doing so would destroy the non-expert, social testimonial warrant for that knowledge. The asymmetry between how expert scientific speakers and non-expert audiences warrant their scientific knowledge is what both generates and necessitates Mill’s social epistemic rationale for the “absolute” freedom to dispute it. (shrink)

A debated topic in Avicennan psychology is whether for Avicenna abstraction is a metaphor for emanation or to be taken literally. This issue stems from the deeper philosophical question of whether humans acquire intelligibles externally from an emanation by the Active Intellect, which is a separate substance, or internally from an inherently human cognitive process, which prepares us for an emanation from the Active Intellect. I argue that the tension between thesedoctrines is only apparent. In his logical works Avicenna limns (...) an account where through the internal human process of abstraction accidents accruing to an essence existing in matter are extracted, thus preparing the essence for new accidents emanating externally from the Active Intellect, which make the essence something conceptualized in the intellect. This study, then, outlines the epistemological and metaphysical framework presented in the logical works that underpins Avicenna’s theory of abstraction presented in his psychological works. (shrink)

Elucidating a metaphysics of medicine is vital for framing a coherent medical ethics. In this paper, I examine the historical case of Avicenna, the eleventh century physician-philosopher. Avicenna radicalizes the dissective power of reason using a logicized Aristotelian metaphysics to clarify concepts at the metaphysical level, which I call his anatomy of being. One of the practical consequences of Avicenna’s metaphysics is a dehumanizing eschatology of death. I outline the main elements of Avicenna’s thought that constitute his anatomy of being. (...) Through an examination of his logic, metaphysics, and psychology, I show how Avicenna develops a dissective logic. I conclude that one’s epistemology, as a method of knowing, entails a metaphysics, and, in turn, results in an ethical stance to the object of knowledge. For Avicenna, mental dissective logic applied to humans results in dehumanization, thereby destroying the humanistic impulse of medicine. (shrink)

In Carnap’s autobiography, he tells the story how one night in January 1931, “the whole theory of language structure” in all its ramifications “came to [him] like a vision”. The shorthand manuscript he produced immediately thereafter, he says, “was the first version” of Logical Syntax of Language. This document, which has never been examined since Carnap’s death, turns out not to resemble Logical Syntax at all, at least on the surface. Wherein, then, did the momentous insight of 21 January 1931 (...) consist? We seek to answer this question by placing Carnap’s shorthand manuscript in the context of his previous efforts to accommodate scientific theories and metalinguistic claims within Wittgenstein’s Tractatus theory of meaning. The breakthrough of January 1931 consists, from this viewpoint, in the rejection of the Tractatus theory in favor of the meta-mathematical perspective of Hilbert, Gödel, and Tarski. This was not yet the standpoint of the published Logical Syntax, as we show, but led naturally to the “principle of tolerance” and thus to Carnap’s mature philosophy, in which the inconsistencies between this first view and the principle of tolerance, which survived into the published Syntax, were overcome. (shrink)

This book defends a new interpretation of Hegel's theoretical philosophy, according to which Hegel's project in his central Science of Logic has a single organizing focus, provided by taking metaphysics as fundamental to philosophy, rather than any epistemological problem about knowledge or intentionality. Hegel pursues more specifically the metaphysics of reason, concerned with grounds, reasons, or conditions in terms of which things can be explained-and ultimately with the possibility of complete reasons. There is no threat to such metaphysics in epistemological (...) or skeptical worries. The real threat is Kant's Transcendental Dialectic case that metaphysics comes into conflict with itself. But Hegel, despite familiar worries, has a powerful case that Kant's own insights in the Dialectic can be turned to the purpose of constructive metaphysics. And we can understand in these terms the unified focus of the arguments at the conclusion of Hegel's Science of Logic. Hegel defends, first, his general claim that the reasons which explain things are always found in immanent concepts, universals or kinds. And he will argue from here to conclusions which are distinctive in being metaphysically ambitious yet surprisingly distant from any form of metaphysical foundationalism, whether scientistic, theological, or otherwise. Hegel's project, then, turns out neither Kantian nor Spinozist, but more distinctively his own. Finally, we can still learn a great deal from Hegel about ongoing philosophical debates concerning everything from metaphysics, to the philosophy of science, and all the way to the nature of philosophy itself. (shrink)

A debated topic in Avicennan psychology is whether for Avicenna abstraction is a metaphor for emanation or to be taken literally. This issue stems from the deeper philosophical question of whether humans acquire intelligibles externally from an emanation by the Active Intellect, which is a separate substance, or internally from an inherently human cognitive process, which prepares us for an emanation from the Active Intellect. I argue that the tension between thesedoctrines is only apparent. In his logical works Avicenna limns (...) an account where through the internal human process of abstraction accidents accruing to an essence existing in matter are extracted, thus preparing the essence for new accidents emanating externally from the Active Intellect, which make the essence something conceptualized in the intellect. This study, then, outlines the epistemological and metaphysical framework presented in the logical works that underpins Avicenna’s theory of abstraction presented in his psychological works. (shrink)

Psychologism is a philosophical ideology that seeks to explain the principles of logic, metaphysics, and epistemology as psychological phenomena. Psychologism has been the storm center of concerted criticisms since the nineteenth century, and is thought by many to have been refuted once and for all by Kant, Frege, Husserl, and others. The project of accounting for objective philosophical or mathematical truths in terms of subjective psychological states has been largely discredited in mainstream analytic thought. Ironically, psychologism has resurfaced in (...) unexpected guises in the form of intuitionistic logic and mathematics, cognitivism, and naturalized epistemology. I examine some of the principal objections to psychologism – distinguishing roughly between good and bad or philosophically acceptable versus unacceptable psychologism – and consider the extent to which a new wave of psychologism may be gaining prominence in contemporary philosophy, and the light its successes and failures may shed on the original concept and underlying perspective of classical psychologism. (shrink)

'Nobody reads Mill today,' wrote a reviewer in Time magazine a few years ago.! One could scarcely praise Mr Melvin Maddocks, who penned that remark, for his awareness of the present state of Mill studies, for of all nineteenth century philosophers who wrote in English, it is 1. S. Mill who remains the most read today. Yet it would not be so far from the truth to say that very few people pay much serious attention nowadays to Mill's writings (...) about logic and metaphysics (as distinct from those on ethical and social issues), despite the fact that Mill put enormous effort into their composition and through them exerted a considerable influen ce on the course of European philosophy for the rest of his century. But the only sections of A System of Logic (1843) and An Examination of Sir William Hamilton's Philosophy (1865) to which much reference is now made comprise only a small proportion of those very large books, and the prevailing assumption is that Mill's theories about logical and meta physical questions are, with few exceptions, of merely antiquarian in terest. Bertrand Russell once said that Mill's misfortune was to be born at the wrong time (Russell (1951), p. 2). It can certainly appear that Mill chose an inauspicious time to attempt a major work on logic. (shrink)

Husserl’s theory of fulfilment conceives of empty acts, such as symbolic thought, and fulfilling acts, such as sensory perceptions, in a strict parallel. This parallelism is the basis for Husserl’s semantics, epistemology, and conception of truth. It also entails that any true proposition can be known in principle, which Church and Fitch have shown to explode into the claim that every proposition is _actually_ known. I assess this logical challenge and discuss a recent response by James Kinkaid. While Kinkaid’s (...) proposal saves one direction of the parallel for semantics, it gives up the parallelism for truth. I spell out a different response which meshes naturally with Husserl’s account of meaning. If the parallelism is restricted to a class of basic propositions, the truth of non-basic propositions can be defined inductively, without leading to the paradox. I then discuss objections that have been raised against a similar proposal by Dummett. The result is that exegetically plausible and popular interpretations of Husserl’s correlationism are indeed challenged by Church and Fitch. But when taking into account the ‘logical adumbration’ of propositional blindspots, truth and possible fulfilment can be connected without paradox. (shrink)

In this paper, I take a closer look at Hans Reichenbach’s relation to metaphysics and work out some interesting parallels between his account and that of the proponents of inductive metaphysics, a tradition that emerged in the mid- and late 19th century and the early 20th century in Germany. It is in particular Hans Reichenbach’s conception of the relation between the natural sciences and metaphysics, as displayed in his treatment of the question of the existence of the external world, that (...) shows some very interesting similarities with inductive metaphysics. By a comparison with the position of the inductive metaphysician Erich Becher and his handling of the problem of realism, I work out the parallels between Reichenbach’s program and inductive metaphysics. I come to the conclusion that while there are certainly some respects in which Reichenbach’s logical empiricism is closer to the positions of the representatives of the Vienna Circle, it turns out that with regard to his views on metaphysics there is a greater affinity with the program of inductive metaphysics. (shrink)

In an article in an earlier edition of the Journal of Medical Ethics (1) Dr Iglesias bases her analysis upon the mediaeval interpretation of Platonic metaphysics and Aristotelian logic as given by Aquinas. Propositional forms are applied to the analysis of experience. This results in a very abstract analysis. The essential connection of events and their changing temporal relationships are ignored. The dichotomy between body and soul is a central concept. The unchanging elements in experience are assumed to be more (...) real than the actual world of experienced process. Such a view makes the analysis of the temporal factors in experience impossible. Its abstractness is quite unsuitable for the analysis of the ontological structure and development of the neonate from fertilisation to birth. A N Whitehead made the notion of organism central to his philosophy. He refused to place human experience outside nature, or admit dualism. His philosophy of organism is an attempt to uncover the essential elements connecting human experience with the physical and biological sciences. Time, change and process are, in his view, more real than the static abstractions obtainable by the use of the fallacy of misplaced concreteness. Use of the latter negates the essential connectedness of events and the importance of temporarily and change (2). In this paper I argue that the embryo, being an organism, is not analysable in terms of thinghood. It is a process. To apply Aristotelian logical concepts to it is to distort the real nature of the datum. (shrink)

The most compelling arguments for ethical veganism hinge on premise-pairs linking the serious wrongness of factory farming to that of buying its products: one premise claiming that buying those products stands in a certain relation to factory farming itself, and one claiming that entering into that relation with a seriously wrong practice is itself wrong. I argue that all such “linkage arguments” on offer fail, granting the serious wrongness of factory farming. Each relevant relation is such that if it holds (...) between factory farming and buying its products, then it holds between some seriously wrong practice and economic transactions of an absurd number and breadth. Hence, all these premise-pairs would, if true, generate unacceptable moral overreach; each premise-pair contains at least one unacceptable member, and the linkage arguments for ethical veganism fail. (shrink)

This collection of new essays, the first of its kind in English, considers the ways in which the philosophy of Immanuel Kant engages with the views of lesser-known eighteenth-century German thinkers. Each chapter casts new light on aspects of Kant's complex relationship with these figures, particularly with respect to key aspects of his logic, metaphysics, epistemology, theory of science, and ethics. The portrait of Kant that emerges is of a major thinker thoroughly engaged with his contemporaries - drawing on (...) their ideas and approaches, targeting their arguments for criticism and responding to their concerns, and seeking to secure the legacy of his thought among them. This volume will open the door for further research on Kant and his methods of philosophical inquiry, while introducing readers to the distinctive and influential philosophical contributions of several previously neglected figures. (shrink)

G. E. Moore famously observed that to assert ‘I went to the pictures last Tuesday but I do not believe that I did’ would be ‘absurd’. Moore calls it a ‘paradox’ that this absurdity persists despite the fact that what I say about myself might be true. Krista Lawlor and John Perry have proposed an explanation of the absurdity that confines itself to semantic notions while eschewing pragmatic ones. We argue that this explanation faces four objections. We give a better (...) explanation of the absurdity both in assertion and in belief that avoids our four objections. (shrink)

To many contemporary scholars, Émile Meyerson is a footnote in an obscure history: early twentieth-century French philosophy of science. While the traditions of épistémologie are beginning to enjoy the scrutiny they deserve, Meyerson’s role remains overlooked. This article provides an overview of Meyerson’s philosophical project to help sow the seeds for a more systematic recuperation of its legacy. By orienting his work historically, I elucidate the nature of Meyerson’s critique of positivism, his distinctive method, and the implications these have for (...) the relation between science and philosophy. In particular, I show that for Meyerson positivisme refers not only to the doctrine of Auguste Comte but to a general philosophical tendency. Inseparable from Meyerson’s critique of this tendency is his implementation of a new methodology—épistémologie—according to which reason must be understood through the historical development of science. Épistémologie reveals that positivism not only is an incomplete account of science but is detrimental to its progress. Accordingly, Meyerson hopes to secure science’s right to function according to its own immanent principles, thereby providing prolegomena to all future metaphysics through a historical determination of the nature and limits of human reason. (shrink)

This paper examines the question of the extensional correctness of Tarskian definitions of logical truth and logical consequence. I identify a few different informal properties which are necessary for a sentence to be an informal logical truth and look at whether they are necessary properties of Tarskian logical truths. I examine arguments by John Etchemendy and Vann McGee to the effect that some of those properties are not necessary properties of some Tarskian logical truths, and find them unconvincing. I stress (...) the point that since the hypothesis that Tarski's definitions are extensionally correct is deeply entrenched, the burden of proof is still on the shoulders of Tarski's critics, who have not lifted the burden. (shrink)

Epistemic logic begins with the recognition that our everyday talk about knowing and believing has some systematic features that we can track and re‡ect upon. Epistemic logicians have studied and extended these glints of systematic structure in fascinating and important ways since the early 1960s. However, for one reason or another, mainstream epistemologists have shown little interest. It is striking to contrast the marginal role of epistemic logic in contemporary epistemology with the centrality of modal logic for metaphysicians. This (...) article is intended to help in correcting this oversight by presenting some important developments in epistemic logic and suggesting ways to understand their applicability to traditional epistemological problems. Obviously, by itself, tweaking the formal apparatus of epistemic logic does not solve traditional epistemological problems. Epistemic logic can help us to navigate through problems in a systematic fashion by unpacking the logic of the problematic concepts, it can also lead us to recognize problems that we had not anticipated. This is basically analogous to the role that modal logic has played in contemporary metaphysics. (shrink)

The paper is a critique of the widespread conception of logic as a neutral arbiter between metaphysical theories, one that makes no `substantive’ claims of its own (David Kaplan and John Etchemendy are two recent examples). A familiar observation is that virtually every putatively fundamental principle of logic has been challenged over the last century on broadly metaphysical grounds (however mistaken), with a consequent proliferation of alternative logics. However, this apparent contentiousness of logic is often treated as though it were (...) neutralized by the possibility of studying all these alternative logics within an agreed metalogical framework, typically that of first-order logic with set theory. In effect, metalogic is given the role of neutral arbiter. The paper will consider a variety of examples in which deep logical disputes re-emerge at the meta-level. One case is quantified modal logic, where some varieties of actualism require a modal meta-language (as opposed to the usual non-modal language of possible worlds model theory) in order not to make their denial of the Barcan formula self-defeating. Similarly, on some views the intended model theory for second-order logic can only be given in a second-order metalanguage—this may be needed to avoid versions of Russell’s paradox when the first-order quantifiers are read as absolutely unrestricted. It can be shown that the phenomenon of higher-order vagueness eventually forces fuzzy logical treatments of vagueness to use a fuzzy metalanguage, with consequent repercussions for what first-order principles are validated. The difficulty of proving the completeness of first-order intuitionistic logic on its intended interpretation by intuitionistically rather than just classically valid means is a more familiar example. These case studies will be discussed in some detail to reveal a variety of ways in which even metalogic is metaphysically contested, substantial and non-neutral. (shrink)

This paper considers the question of whether Mill's account of the nature and justificatory foundations of deductive logic is psychologistic. Logical psychologism asserts the dependency of logic on psychology. Frequently, this dependency arises as a result of a metaphysical thesis asserting the psychological nature of the subject matter of logic. A study of Mill's System of Logic and his Examination reveals that Mill held an equivocal view of the subject matter of logic, sometimes treating it as a set (...) of psychological processes and at other times as the objects of those processes. The consequences of each of these views upon the justificatory foundations of logic are explored. The paper concludes that, despite his providing logic with a prescriptive function, and despite his avoidance of conceptualism, Mill's theory fails to provide deductive logic with a justificatory foundation that is independent of psychology. (shrink)

This thesis attempts to argue against an influential interpretation of Kant's philosophy of mathematics according to which the role of pure intuition is primarily logical. Kant's appeal to pure intuition, and consequently his belief in the synthetic character of mathematics, is, on this view, a result of the limitations of the logical resources available in his time. In contrast to this, a reading is presented of the development of Kant's philosophy of mathematics which emphasises a much richer philosophical role for (...) intuition, beyond that of filling in deductive gaps in mathematical arguments. This role is largely determined by two factors: on the one hand, the epistemological gap in a traditional account of mathematical certainty, and on the other hand, the metaphysical worry raised by the followers of Leibniz and Wolff regarding the status of mathematics as a science consisting of truths. ;By appreciating how Kant's philosophy of mathematics developed against the background of what he saw as a conflict between the 'metaphysicians' and the 'mathematicians', we can see how the doctrine of pure intuition was required to fill the gaps in the account of the method and certainty of mathematics which Kant presents in the Prize Essay of 1764. This conflict takes its sharpest form between the monadists who uphold the metaphysical necessity of simple elements, and the geometers who uphold the infinite divisibility of space. In the Prize Essay Kant indirectly addresses this conflict by comparing the two disciplines. He asserts that the method of attaining certainty in mathematics is different from the method of metaphysics, and that as a result of this difference--primarily the different roles of definitions in each--mathematics is capable of a higher degree of certainty than metaphysics. He does not, however, explain this difference. Such an explanation seems particularly important in light of Kant's wish to secure geometry against the challenge of metaphysics. This thesis attempts to show that it is to provide such an explanation, to provide a philosophical grounding for the Prize Essay account, that Kant invokes the doctrine of pure intuition in his later account of mathematical knowledge. (shrink)

The greatest strength of Pradeep P. Gokhale's Lokāyata/Cārvāka: A Philosophical Inquiry is its much-needed enrichment of the vocabulary for the study of the Indian Lokāyata/Cārvāka school. For too long this school has been studied in the rather limited terms of its opponents in texts such as Mādhava's Sarvadarśanasaṃgraha, which identify a single Cārvāka position advocating extreme empiricism in epistemology, materialism in metaphysics, and hedonism and irreligiousness in ethics. Gokhale establishes frameworks for understanding the diversity of epistemological, metaphysical, and axiological (...) positions of Cārvāka philosophers that ought to be considered by anyone writing on the school in the future.Chapter 1... (shrink)

Franz Brentano was a leading philosopher and psychologist of the nineteenth century. Indeed, the impact of his scholarship was so great that he became synonymous with a school of thought and a new approach in scientific philosophy. The Brentano School stood against the Idealistic and post-Kantian German tradition and Brentano played a crucial role in the founding of Austrian philosophy. He had an enormous impact on the work of Husserl and Heidegger, as well as on Moore’s _Ethics_ and Stout and (...) Russell’s analysis of mind. In particular, situated between the phenomenology movement and the analytic tradition, the concept of intentionality was redefined by Brentano and has been—and remains—a key concept of twentieth- and twentieth-first century philosophy of mind. But Brentano not only reshaped philosophy of mind; he was also a remarkable and innovative thinker in several other fields of philosophy, and recent debate in metaethics, metaphysics, and the history of analytic philosophy shows a strong resurgence of interest in Brentano’s thought. Published to coincide with the centenary of Brentano’s death, this four-volume collection, a new title from Routledge Major Works, provides an essential intellectual tool for the exegetical evaluation of all aspects of Brentano’s work. Bringing together early reviews and reactions from his contemporaries—many of which have never before been translated into English—as well as the best critical assessments of Brentano’s work, this ‘mini library’ provides Brentano scholars, historians of philosophy and psychology, and phenomenologists, with a rigorous historical appraisal of Brentano’s thought and influence. Brentano’s relationships with Husserl, Heidegger, and the phenomenological tradition are examined in depth, alongside investigations of key themes from his work on Aristotle, medieval and modern philosophy, philosophy of mind, logic, ontology, ethics, aesthetics, philosophy of religion, and the philosophy of history. (shrink)

Recent studies on the philosophy of Avicenna have traditionally focused on his metaphysics, his psychology, and his influence on subsequent philosophers within.

In this paper, I explore whether elementary classical mechanics adheres to the Principle of Composition of Causes as Mill claimed and as certain contemporary authors still seem to believe. Among other things, I provide a proof that if one reads Mill’s description of the principle literally, it does not hold in any general sense. In addition, I explore a separate notion of Composition of Causes and note that it too does not hold in elementary classical mechanics. Among the major morals (...) is that there is no utility to describing classical mechanics in terms of Composition of Causes. This is both because the stated principles do not hold and because when one describes what actually does hold in classical mechanics in terms of the Composition of Causes, one introduces misleading associations that can generate errors just as claimed by Russell. (shrink)

Charles Peirce is often credited for being among the first, perhaps even the first, to develop a scientific metaphysics of indeterminism. After rejecting the received view that Peirce developed his views from Darwin and Maxwell, I argue that Peirce's view results from his synthesis of Immanuel Kant's critical philosophy and George Boole's contributions to formal logic. Specifically, I claim that Kant's conception of the laws of logic as the basis for his architectonic, when combined with Boole's view of probability, yields (...) Peirce's metaphysics of probabilistic laws. Indeterminism provides, therefore, an excellent illustration of how Peirce attempted to use logic to clarify metaphysical problems.Since everyone must have conceptions of things in general, it is most important that they should be carefully constructed. I shall enter into no criticism of the different methods of metaphysical research, but shall merely say that in the opinions of several great thinkers, the only successful mode yet lighted upon is that of adopting our logic as our metaphysics. (W1: 490, 1866)2. (shrink)

This paper makes three points: First, empiricism as a stance is problematic unless criteria for evaluating the stance are provided. Second, Van Fraassen conceives of the empiricist stance as receiving its content, at least in part, from the rejection of metaphysics. But the rejection of metaphysics seems to presuppose for its justification the very empiricist doctrine Van Fraassen intends to replace with the empiricist stance. Third, while I agree with Van Fraassen’s endorsement of voluntarism, I raise doubts about the possibility (...) of defending voluntarism without engaging in the kind of metaphysics Van Fraassen rejects. (shrink)

In recent years, there has been a growing interest in truthmaker semantics as a framework for understanding a range of phenomena in philosophy and linguistics. Despite this interest, there has been limited study of the various logics that arise from the semantics. This paper aims to address this gap by exploring numerous ‘truthmaker logics’ and proving their compactness and decidability. This is in continuation with the inquiry of Fine and Jago (2019), who proved compactness and decidability for a particular kind (...) of truthmaker logic. The key results going into this are (1) ‘standard translations’ into first-order logic; (2) a truthmaker analogue of the finite model property; and (3) a proof showing that truthmaker consequence on semilattices coincides with truthmaker consequence on complete lattices. Finally, the connection with modal logic is examined. Specifically, it is illustrated how endowing truthmaker semantics with classical negation results in modal information logics. (shrink)