Peter Abelard (1079–1142 ce) was the most wide‐ranging philosopher of the twelfth century. He quickly established himself as a leading teacher of logic in and near Paris shortly after 1100. After his affair with Heloise, and his subsequent castration, Abelard became a monk, but he returned to teaching in the Paris schools until 1140, when his work was condemned by a Church Council at Sens. His logical writings were based around discussion of the “Old Logic”: Porphyry's Isagoge, aristotle'S Categories (...) and On Interpretation and boethius'S textbook on topical inference. They comprise a freestanding Dialectica (“Logic”; probably c.1116), a set of commentaries (known as the Logica [Ingredientibus], c. 1119) and a later (c. 1125) commentary on the Isagoge (Logica Nostrorum Petititoni Sociorum or Glossulae). In a work Abelard called his Theologia, issued in three main versions (between 1120 and c.1134), he attempted a logical analysis of trinitarian relations and explored the philosophical problems surrounding God's claims to omnipotence and omniscience. The Collationes (“Debates,” also known as “Dialogue between a Christian, a Philosopher and a Jew”; probably c.1130) present a rational investigation into the nature of the highest good, in which the Christian and the Philosopher (who seems to be modeled on a philosopher of pagan antiquity) are remarkably in agreement. The unfinished Scito teipsum (“Know thyself,” also known as the “Ethics”; c.1138) analyses moral action. (shrink)

Introduction Max Horkheimer was born on February in Stuttgart. By the time he died, on 7 July in Nuremberg, he had played a decisive role in launching and ...

The Intellectual Powers is a philosophical investigation into the cognitive and cogitative powers of mankind. It develops a connective analysis of our powers of consciousness, intentionality, mastery of language, knowledge, belief, certainty, sensation, perception, memory, thought, and imagination, by one of Britain’s leading philosophers. It is an essential guide and handbook for philosophers, psychologists, and cognitive neuroscientists. The culmination of 45 years of reflection on the philosophy of mind, epistemology, and the nature of the human person No other book in (...) epistemology or philosophy of psychology provides such extensive overviews of consciousness, self–consciousness, intentionality, mastery of a language, knowledge, belief, memory, sensation and perception, thought and imagination Illustrated with tables, tree–diagrams, and charts to provide overviews of the conceptual relationships disclosed by analysis Written by one of Britain’s best philosophical minds A sequel to Hacker’s Human Nature: The Categorial Framework An essential guide and handbook for all who are working in philosophy of mind, epistemology, psychology, cognitive science, and cognitive neuroscience. (shrink)

0. My aims in this paper are largely expository: I am more interested in presenting the picture theory than deciding its truth. Even so, I hope that the arguments by which I develop the theory will do something to support it, since I believe that what I will present as Wittgenstein's view is indeed the truth. This is not an admission of insanity, though some things that have been thought intrinsic to the picture theory are things it would be insane (...) to believe. So clearly the view I will present, when compared to the most embracing interpretations, is a partial and selective one. It would be another kind of madness, one I am just as eagre to disown, to suppose that my own favoured selection is the only possible one. That is pretty well the last remark in this paper about other commentators. I trust my reticence entitles me to be presumed catholic until proven nonconformist. (shrink)

The relationship of part to whole is one of the most fundamental there is; this is the first and only full-length study of this concept. This book shows that mereology, the formal theory of part and whole, is essential to ontology. Peter Simons surveys and criticizes previous theories, especially the standard extensional view, and proposes a more adequate account which encompasses both temporal and modal considerations in detail. 'Parts could easily be the standard book on mereology for the next (...) twenty or thirty years.' Timothy Williamson, Grazer Philosophische Studien. (shrink)

Frege's theory of real numbers has undeservedly received almost no attention, in part because what we have is only a fragment. Yet his theory is interesting for the light it throws on logicism, and it is quite different from standard modern approaches. Frege polemicizes vigorously against his contemporaries, sketches the main features of his own radical alternative, and begins the formal development. This paper summarizes and expounds what he has to say, and goes on to reconstruct the most important steps (...) which he is likely to have subsequently taken. The various difficulties facing his theory in this reconstruction are outlined, and some surprising consequences drawn about the nature of his logicism. (shrink)

The purpose of this note is to examine the claim made by Howard Smokler that “Goodman's paradox should be considered as an independent argument against a conception of inductive logic which makes use of rules of acceptance”.Smokler's claim arises from his treatment of Goodman's paradox in the form given it by Israel Scheffler. Schefflerhas discussed this paradox primarily in the context of a methodology of induction which views inductive rules as rules of acceptance permitting one to assert detached conclusions. The (...) inductive rule considered by Scheffler is described as follows: What leads us to make one particular prediction rather than its opposite is not its deducibility froIII evidence but rather its congruence with a generalization thoroughly in accord with all such evidence, and the correlative disconfirmation of the contrary generalization by the same evidence.. (shrink)

Introduction By the late fifth century BCE Panini had composed the Astadhyayi, consisting of nearly 4000 rules giving a precise and fairly complete ...

This book with an introduction by Witold Marciszewski, views the history of philosophy and logic from 1837 to 1939 from the perspective of the cradle of modern exact philosophy - Central Europe. In a series of case studies, it illuminates the developments in this region, most notably in Austria and Poland, examining thinkers such as Bolzano, Brentano, Meinong, Husserl, Twardowski, Lesniewski, and Tarski, as well as the logicians like Frege and Russell with whom they bore a close resemblance. The book (...) challenges established views about the history of philosophy and logic in Europe, and shows the vitality of the Central European tradition. (shrink)

A way of reading the Tractatus has been proposed which, according to its advocates, is importantly novel and essentially distinct from anything to be found in the work of such previously influential students of the book as Anscombe, Stenius, Hacker or Pears. The point of difference is differently described, but the currently most used description seems to be Goldfarb’s term ‘resolution’ – hence one speaks of ‘the resolute reading’. I’ll shortly ask what resolution is. For now, it is enough that (...) it aims to give full weight to the penultimate section of the Tractatus in which Wittgenstein declares his propositions to be nonsense, where giving full weight to that declaration involves not hearing it as allowing that those ‘nonsensical’ propositions might have another kind of ‘sense’. In that same section Wittgenstein explains that these nonsense propositions, while devoid of meaning, have a use: to make the kind of use of them that their author intends – and so to understand him – requires recognizing that they are nonsense; and through that recognition one ‘surmounts’ these propositions, and is led ‘to see the world aright’. So there is a point to all this nonsense. What point? (shrink)

Wie kaum eine andere Materie in Deutschland ist der Verwaltungsrechtsschutz verfassungsrechtlich geprägt. In einer Rechtsordnung, in der das Diktum Fritz Werners vom Verwaltungsrecht als konkretisiertem Verfassungsrecht im Grundsatz nach wie vor gilt und als rechtsstaatlich-zivilisatorische Errungenschaft empfunden wird, muss dies für den Verwaltungsrechtsschutz – den gerichtlichen Rechtsschutz in Ansehung der öffentlichen Verwaltung – erst recht gelten. Das ist nicht nur das Produkt einer mehr oder weniger weit ausgreifenden Verfassungsexegese, sondern ein vielfältig abgesichertes Verfassungsgebot.

This book bridges the gaps between logic, mathematics and computer science by delving into the theory of well-quasi orders, also known as wqos. This highly active branch of combinatorics is deeply rooted in and between many fields of mathematics and logic, including proof theory, commutative algebra, braid groups, graph theory, analytic combinatorics, theory of relations, reverse mathematics and subrecursive hierarchies. As a unifying concept for slick finiteness or termination proofs, wqos have been rediscovered in diverse contexts, and proven to be (...) extremely useful in computer science. The book introduces readers to the many facets of, and recent developments in, wqos through chapters contributed by scholars from various fields. As such, it offers a valuable asset for logicians, mathematicians and computer scientists, as well as scholars and students. (shrink)

Traditional views of rationality posit general-purpose decision mechanisms based on logic or optimization. The study of ecological rationality focuses on uncovering the “adaptive toolbox” of domain-specific simple heuristics that real, computationally bounded minds employ, and explaining how these heuristics produce accurate decisions by exploiting the structures of information in the environments in which they are applied. Knowing when and how people use particular heuristics can facilitate the shaping of environments to engender better decisions.

Moving beyond the traditional, and unproductive, rivalry between the fields of motivation and cognition, this book integrates the two domains to shed new light ...

For most of the history of metaphysics, the subject has been dominated by the concept of substance. There is an everyday commonsense notion of substance which is perfectly harmless and which I shall defend against attempts to remove it or revise it away. But I deny that substance has to be construed as a primitive even in everyday terms. Borrowing Strawson’s distinction between descriptive and revisionary metaphysics, I press the legitimate claims of revisionary metaphysics and argue that there is no (...) place for a fundamental concept of substance within it, although aspects of the concept are likely to find their place therein. (shrink)

Coleman states that social phenomena cannot be directly accounted for by their social antecedents without analyzing three intervening steps: what motives the antecedents create, how these affect individual behavior, and the transition from the acts of interdependent individuals to social phenomena. The last is most important. I agree, but Foundations has its causal link upside down. Reanalyzing some of his cases, I try to show that macrostructures are not the product of microfoundations but the existential conditions that circumscribe individuals’ choices.

The intertwining careers of William Torrey Harris converge in twelve of the Annual Reports of the Board of Directors for St. Louis Public Schools. Harris formulated most of the essential features of these twelve reports as the Superintendent of Schools from 1867 to 1869. These particular reports—which have been acclaimed nationally and internationally—are said to be among the most valuable official publications in American educational literature. They are far different from the descriptive documents originally intended by their author. This study (...) demonstrates that Harris provided an authentic philosophy of education, a set of interrelated philosophical principles and their applications to educational problems. The substance of Harris's philosophy of education is focused upon a broadly based philosophical anthropology in relationship primarily to the purposes, curriculum, and teaching methods in intellectual, moral, and religious education. (shrink)

While theories of rationality and decision making typically adopt either a single-powertool perspective or a bag-of-tricks mentality, the research program of ecological rationality bridges these with a theoretically-driven account of when different heuristic decision mechanisms will work well. Here we described two ways to study how heuristics match their ecological setting: The bottom-up approach starts with psychologically plausible building blocks that are combined to create simple heuristics that fit specific environments. The top-down approach starts from the statistical problem facing the (...) organism and a set of principles, such as the bias– variance tradeoff, that can explain when and why heuristics work in uncertain environments, and then shows how effective heuristics can be built by biasing and simplifying more complex models. We conclude with challenges these approaches face in developing a psychologically realistic perspective on human rationality. (shrink)

SummaryLeśniewski presented his logical systems in a way which conformed to his nominalism, so the question arises whether Leśniewski's logic can be given a natural formal semantics which, unlike current versions, avoids commitment to abstract entities. Building on hints in Wittgenstein's Tractatus, I develop the idea of a way of meaning which is the basis for what I call combinatorial semantics. I then consider whether this commits us to abstract objects or an intensional metalogic.

Since early in this century, a number of cultural anthropologists and archaeologists have been theorizing that some of the very culture traits Boehm regards as ‘primitive’ are, in fact, partial products of the difficult circumstances of the last few thousand years. For instance, the mobility and egalitarianism of some foragers may have been amplified by their culture contact experiences. Boehm must consider these theories if he hopes to identify foragers whose cultures may be representative of the past.

Property Law and Social Morality develops a theory of property that highlights the social construction of obligations that individuals owe each other. By viewing property law through the lens of obligations rather than through the lens of rights, the author affirms the existence of important property rights and defines the scope of those rights. By describing the scope of the decisions that individuals are permitted to make and the requirements of other-regarding decisions, the author develops a single theory to explain (...) the dynamics of private and common property, including exclusion, nuisance, shared decision making, and decision making over time. The development of social recognition norms adds to our understanding of property evolution, and the principle of equal freedom underlying social recognition that limit government interference with property rights. (shrink)

This book develops a theory of tort law that integrates deontic and consequential approaches by applying justificational analysis to identify the factors, circumstances, and values that shape tort law. Drawing on Kantian and Rawlsian philosophy, and on the insights of game theorist Ken Binmore, this book refocuses tort law on a single theory of responsibility that explains and justifies the broad range of tort doctrine and concepts. Under this theory, tort law asks people to appropriately incorporate the well-being of others (...) into the decisions they make, explains when that duty applies, and explains the scope and limits of that duty. The theory also incorporates a theory of the evolutionary development of social values that people use, and ought to use, in meeting that duty and explains how decision-making from behind the veil of ignorance allows us to evaluate the is in light of the ought. (shrink)

This paper continues a discussion that Adrian Moore and I have had about the place of idealism in Wittgenstein’s philosophy. While there are several unresolved issues in that discussion I want here to pursue only one; and, to minimize the risk of repetition, I will shift the primary focus of discussion from Wittgenstein’s earlier to his later thought. I will, though, have to say something first to identify the point I have in mind from the earlier discussion, and second to (...) indicate how the later issue corresponds to it. […] Moore and I share a view of Wittgenstein’s work as belonging to the Kantian, transcendental tradition; we are in agreement that the central requirement for a proper understanding of his thought is to make plain how it relates to the core ideas of that tradition, and in particular to transcendental idealism. But on just that issue we have disagreed. Suppressing niceties, and settling for what Adrian himself has called a “cartoon sketch,” Moore has held that in his early work Wittgenstein embraces transcendental idealism, while his later thought offers us ways of resisting it; whereas I have held exactly the reverse. (shrink)