This paper focuses on Hans Kelsen’s reflections on political parties. During the interwar period, Kelsen participated in a controversy over whether political parties were a necessary part of the democratic process. The debate forced Kelsen to produce a defence of political parties to emphasise their functionality and define their place in his particular definition of democracy. This contribution considers the following aspects. First, the reasons why Kelsen thought political parties are necessary for democratic life are explained. Second, the doctrinal oppositions (...) against which he elaborated his defence of political parties are clarified. Third, the programme that Kelsen conceived of to enhance political parties in a constitutional democracy is examined. Finally, the contemporary questions that have arisen in relation to Kelsen’s conception of political parties are scrutinised. Kelsen’s contribution to the debate about the role of political parties was intimately related to the presence of strong criticisms of that role. This makes his reflections even more interesting today, considering the present relative decline of the political role and appeal of parties. (shrink)

In this paper we will consider the existing notions of bilateralism in the context of proof-theoretic semantics and propose, based on our understanding of bilateralism, an extension to logical multilateralism. This approach differs from what has been proposed under this name before in that we do not consider multiple speech acts as the core of such a theory but rather multiple consequence relations. We will argue that for this aim the most beneficial proof-theoretical realization is to use sequent calculi with (...) multiple sequent arrows satisfying some specific conditions, which we will lay out in this paper. We will unfold our ideas with the help of a case study in logical tetralateralism and present an extension of Almukdad and Nelson’s propositional constructive four-valued logic by unary operations of meaningfulness and nonsensicality. We will argue that in sequent calculi with multiple sequent arrows it is possible to maintain certain features that are desirable if we assume an understanding of the meaning of connectives in the spirit of proof-theoretic semantics. The use of multiple sequent arrows will be justified by the presence of congruentiality-breaking unary connectives. (shrink)

It is widely accepted that there is a clear sense in which the first-order paraconsistent constructive logic with strong negation of Almukdad and Nelson, QN4, is more constructive than intuitionistic first-order logic, QInt. While QInt and QN4 both possess the disjunction property and the existence property as characteristics of constructiveness (or constructivity), QInt lacks certain features of constructiveness enjoyed by QN4, namely the constructible falsity property and the dual of the existence property. This paper deals with the constructiveness of the (...) contra-classical, connexive, paraconsistent, and contradictory non-trivial first-order logic QC, which is a connexive variant of QN4. It is shown that there is a sense in which QC is even more constructive than QN4. The argument focuses on a problem that is mirror-inverted to Raymond Smullyan’s drinker paradox, namely the invalidity of what will be called the drinker truism and its dual in QN4 (and QInt), and on a version of the Brouwer-Heyting-Kolmogorov interpretation of the logical operations that treats proofs and disproofs on a par. The validity of the drinker truism and its dual together with the greater constructiveness of QC in comparison to QN4 may serve as further motivation for the study of connexive logics and suggests that constructive logic is connexive and contradictory (the latter understood as being negation inconsistent). (shrink)

This book is the culmination of Heinrich Meier's acclaimed analyses of the controversial thought of Carl Schmitt. Meier identifies the core of Schmitt's thought as political theology--that is, political theorizing that claims to have its ultimate ground in the revelation of a mysterious or supra-rational God. This radical, but half-hidden, theological foundation unifies the whole of Schmitt's often difficult and complex oeuvre, cutting through the intentional deceptions and unintentional obfuscations that have eluded previous commentators. Relating this religious dimension to (...) Schmitt's support for National Socialism and his continuing anti-Semitism, Meier compels the reader to come to terms with the irreconcilable differences between political theology and political philosophy. His book will give pause to those who have tended to gloss over the troubling aspects of some of Schmitt's ideas. With editions in German, French, Italian, and now English, Meier's two books on Schmitt have dramatically reoriented the international debate about Carl Schmitt and his significance for twentieth-century political thought. "Standing far above the rest . . . is Heinrich Meier's new study, Die Lehre Carl Schmitts , which covers all of Schmitt's writings. . . . Meier's work has forced everyone to take a second look at the assumptions underlying Schmitt's better-known writings and reconsider some that have been ignored."--Mark Lilla, reviewing the German edition in The New York Review of Books. (shrink)

This chapter is concerned with logical aspects of negation, i.e. with the role of negation in valid inferences and hence with the contribution negation makes to the truth and falsity conditions of declarative expressions. Negation is an important philosophical and logical concept. Often differences between logical systems can ‐ at least partially ‐ be described as differences between the notions of negation used in these logics.

Model-theoretic proofs of functional completenes along the lines of [McCullough 1971, Journal of Symbolic Logic 36, 15–20] are given for various constructive modal propositional logics with strong negation.

Text: Reproduktion nach Scan der Ausgabe von 1934, Verlag von J. C. B. Mohr (Paul Siebeck) in Tübingen. - Von dem kleinen Buch, das ich hier der Öffentlichkeit übergebe, bitte ich den Leser, nichts anderes zu erwarten, als das, was sein Titel ausdrücklich sagt. Es handelt sich in ihm nicht etwa um die Grundlinien eines Systems der Philosophie, sondern ausschließlich um dessen Probleme, und wenn diese sich auch nicht darlegen lassen, ohne die Richtung anzudeuten, in der das System bei der (...) Ausführung sich zu bewegen hätte, so sollen doch in dieser Schrift hauptsächlich Fragen gestellt, nicht Antworten gegeben werden. Oft brechen die Darlegungen dort ab, wo mancher Leser glauben kann, daß die größten Schwierigkeiten noch ungelöst sind. Ja mehr: nur die Grundprobleme der Philosophie werden erörtert, und das Eingehen auf Sonderfragen ist fast überall vermieden. Einzelheiten sind dann allein herangezogen worden, wenn es zur Verdeutlichung der Hauptbegriffe wünschenswert erschien. [Auszug aus dem Vorwort des Buches]. (shrink)

Herophilus, a contemporary of Euclid, practiced medicine in Alexandria in the third century B.C., and seems to have been the first Western scientist to dissect the human body. He made especially impressive contributions to many branches of anatomy and also developed influential views on many other aspects of medicine. Von Staden assembles the fragmentary evidence concerning one of the more important scientists of ancient Greece. Part 1 of the book presents the Greek and Latin texts accompanied by English translation and (...) interpretative commentary. Significant background information is given in the introductory essay preceding each chapter. Part 2 briefly sketches the major developments within the Herophilean school after Herophilus, and discusses the individual members within it. Anyone interested in the history of science, the history of medicine, or intellectual history will find this book a rich source of information about an unusual and important aspect of Greek culture. (shrink)

It is shown that every displayable propositional logic enjoys strong cut-elimination. This result strengthens Belnap's general cut-elimination theorem for Display Logic.

The purpose of this article is to illustrate the role of sociology in the field of corporate social responsibility. It presents a case study conducted by a research group consisting of two University partners in association with a Swiss SME. This project attempted to draw conclusions from a specific sociological consultancy research project on the general possibilities and opportunities of sociology in applied research and operational sustainability consulting. On the basis of the project findings, the article reflects on the extent (...) to which sociology could profitably intervene, on the limitations for sociological research and consultations in this field and on the conclusions that can be drawn for future analyses. (shrink)

Czy eutanazja gwałci prawo do życia ("the right to life")? Odpowiedź na to pytanie zależy od rozumienia terminu "prawo do życia". Autor, odwołując się do pojęcia uprawnienia i typologii uprawnień, zaproponowanej przez Stiga oraz Helle Kanger, wyróżnia i analizuje w kategoriach formalnologicznych cztery rozumienia tego terminu. Każdemu z nich odpowiada odmienne stanowisko w sprawie dopuszczalności eutanazji. Pierwszym z tych stanowisk jest "mocna doktryna świętości życia", według której prawu do życia towarzyszy obowiązek przedłużania życia za pomocą wszelkich możliwych środków. Eutanazja zatem, (...) według zwolenników tego stanowiska, jest niedopuszczalna pod żadną postacią. Takie zdecydowane odrzucenie eutanazji stoi w sprzeczności z zasadą szacunku dla autonomii pacjenta oraz zasadą niezadawania zbędnego cierpienia (the principle of nonmaleficence). Uwzględnienie tych dwóch zasad prowadzi do modyfikacji powyższego stanowiska, w wyniku czego otrzymujemy "słabą doktrynę świętości życia". Według tego stanowiska dopuszczalna jest pod pewnymi warunkami eutanazja bierna, czyli zaniechanie leczenia czy też podtrzymywania życia pacjenta. Odmienne stanowisko od zwolenników doktryny świętości życia w obu jej odmianach zajmują zwolennicy liberalnego podejścia do eutanazji. Tutaj także możemy wyróżnić dwa stanowiska. Według słabego stanowiska liberalnego, w pewnych warunkach dopuszczalne moralnie jest popełnienie samobójstwa, niemniej jednak ściśle zakazana jest pomoc osób trzecich w samobójstwie, jak też pozbawienie z rozmysłem życia drugiej osoby na jej własną prośbę. Mocne liberalne stanowisko uznaje za moralnie dopuszczalną pomoc w samobójstwie czy też pozbawienie z rozmysłem życia drugiej osoby na jej własną prośbę. Innymi słowy, za moralnie dopuszczalną uznaje eutanazję czynną. (shrink)