Darstellung des Inhalts -- Kommentar zum griechischen Text.

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be (...) preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant. (shrink)

I consider it a privilege, therefore, to make this volume on Platos philosophy accessible to the English reading public.

This book, first published in English in 1933, provides a detailed analysis of the life and concepts of the Greek philosopher Plato. _The Essence of Plato’s Philosophy _explores epistemology and ontology, the philosophy of nature, ethics and the philosophy of the state, and aesthetics and religion. This book will be of interest to students of philosophy.

Excerpt from Untersuchungen Über Plato: Die Echtheit und Chronologie der Platonischen Schriften, Nebst Anhang: Gedankengang und Grundanschauungen von Platos Theätet Fr. Überweg, Untersuchungen über die Echtheit und Zeitfolge platonischer Schriften u. S. W., Wien 1861. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present (...) in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works. (shrink)

K. R. Popper distinguished between two main uses of logic, the demonstrational one, in mathematical proofs, and the derivational one, in the empirical sciences. These two uses are governed by the following methodological constraints: in mathematical proofs one ought to use minimal logical means (logical minimalism), while in the empirical sciences one ought to use the strongest available logic (logical maximalism). In this paper I discuss whether Popper’s critical rationalism is compatible with a revision of logic in the empirical sciences, (...) given the condition of logical maximalism. Apparently, if one ought to use the strongest logic in the empirical sciences, logic would remain immune to criticism and, thus, non-revisable. I will show that critical rationalism is theoretically compatible with a revision of logic in the empirical sciences. However, a question that remains to be clarified by the critical rationalists is what kind of evidence would lead them to revise the system of logic that underlies a physical theory, such as quantum mechanics? Popper’s falsificationist methodology will be compared with the recently advocated extension of the abductive methodology from the empirical sciences to logic by T. Williamson, since both of them arrive at the same conclusion concerning the status of classical logic. (shrink)

A system of logic usually comprises a language for which a model-theory and a proof-theory are defined. The model-theory defines the semantic notion of model-theoretic logical consequence (⊨), while the proof-theory defines the proof- theoretic notion of logical consequence (or logical derivability, ⊢). If the system in question is sound and complete, then the two notions of logical consequence are extensionally equivalent. The concept of full formalization is a more restrictive one and requires in addition the preservation of the standard (...) meanings of the logical terms in all the admissible interpretations of the logical calculus, as it is proof-theoretically defined. Although classical first-order logic is sound and complete, its standard formalizations fall short to be full formalizations since they allow non-intended interpretations. This fact poses a challenge for the logical inferentialism program, whose main tenet is that the meanings of the logical terms are uniquely determined by the formal axioms or rules of inference that govern their use in a logical calculus, i.e., logical inferentialism requires a categorical calculus. This paper is the first part of a more elaborated study which will analyze the categoricity problem from its beginning until the most recent approaches. I will first start by describing the problem of a full formalization in the general framework in which Carnap (1934/1937, 1943) formulated it for classical logic. Then, in sections IV and V, I shall discuss the way in which the mathematicians B.A. Bernstein (1932) and E.V. Huntington (1933) have previously formulated and analyzed it in algebraic terms for propositional logic and, finally, I shall discuss some critical reactions Nagel (1943), Hempel (1943), Fitch (1944), and Church (1944) formulated to these approaches. (shrink)

Vann McGee has recently argued that Belnap’s criteria constrain the formal rules of classical natural deduction to uniquely determine the semantic values of the propositional logical connectives and quantifiers if the rules are taken to be open-ended, i.e., if they are truth-preserving within any mathematically possible extension of the original language. The main assumption of his argument is that for any class of models there is a mathematically possible language in which there is a sentence true in just those models. (...) I show that this assumption does not hold for the class of models of classical propositional logic. In particular, I show that the existence of non-normal models for negation undermines McGee’s argument. (shrink)

History casts a spell on our minds more powerful than science or religion. It does not root us in the past at all. It rather flatters us with the belief in our ability to recreate the world in our image. It is a form of self-assertion that brooks no opposition or dissent and shelters us from the experience of time. So argues Constantin Fasolt in The Limits of History , an ambitious and pathbreaking study that conquers history's power by (...) carrying the fight into the center of its domain. Fasolt considers the work of Hermann Conring (1606-81) and Bartolus of Sassoferrato (1313/14-57), two antipodes in early modern battles over the principles of European thought and action that ended with the triumph of historical consciousness. Proceeding according to the rules of normal historical analysis--gathering evidence, putting it in context, and analyzing its meaning--Fasolt uncovers limits that no kind of history can cross. He concludes that history is a ritual designed to maintain the modern faith in the autonomy of states and individuals. God wants it, the old crusaders would have said. The truth, Fasolt insists, only begins where that illusion ends. With its probing look at the ideological underpinnings of historical practice, The Limits of History demonstrates that history presupposes highly political assumptions about free will, responsibility, and the relationship between the past and the present. A work of both intellectual history and historiography, it will prove invaluable to students of historical method, philosophy, political theory, and early modern European culture. (shrink)

We argue that, if taken seriously, Kripke's view that a language for science can dispense with a negation operator is to be rejected. Part of the argument is a proof that positive logic, i.e., classical propositional logic without negation, is not categorical.

Our technological lifeworld has become an info-computational media populated by data and algorithms, an artificial environment for life and shared experiences. In this chapter, I tried to sketch three new assumptions for bioethics – it is hardly possible to substantiate ethical guidelines or an idea of normativity in an aprioristic manner; moral status is a function of data entities, not something solely human; agency is plural and thus is shared or sometimes delegated – in order to chart a proposal for (...) a posthuman bioethics. Posthuman is perhaps not the best expression available, but it covers the idea of a shift from a world centered on self-contained and exclusively human agency to a more comprehensive and relational way of thinking. The “posthuman” label should be understood as a rebuttal of biocentrism and anthropocentrism by moving closer to conceptions we encounter in population ethics or in discourse about biosocial and technical systems. Posthuman bioethics is “environmentalist” without losing the humanistic stance. The question regarding how suitable an infocentric bioethics is in practice remains to be settled. The moral principles in bioethics could be reconceived as relying on these new assumptions, in a postindividualistic manner that accepts formal primacy of causal digital artifacts in affording actions in a world of ambient algorithmic intelligence. (shrink)

At last available in paperback, this book anticipates and explains the post-structuralist turn to empiricism. Presenting a challenging reading of David Hume's philosophy, the work is invaluable for understanding the progress of Deleuze's thought.

Due to Gӧdel’s incompleteness results, the categoricity of a sufficiently rich mathematical theory and the semantic completeness of its underlying logic are two mutually exclusive ideals. For first- and second-order logics we obtain one of them with the cost of losing the other. In addition, in both these logics the rules of deduction for their quantifiers are non-categorical. In this paper I examine two recent arguments –Warren (2020), Murzi and Topey (2021)– for the idea that the natural deduction rules for (...) the first-order universal quantifier are categorical, i.e., they uniquely determine its semantic intended meaning. Both of them make use of McGee’s open-endedness requirement and the second one uses in addition Garson’s (2013) local models for defining the validity of these rules. I argue that the success of both these arguments is relative to their semantic or infinitary assumptions, which could be easily discharged if the introduction rule for the universal quantifier is taken to be an infinitary rule, i.e. non-compact. Consequently, I reconsider the use of the ω-rule and I show that the addition of the ω-rule to the standard formalizations of first-order logic is categorical. In addition, I argue that the open-endedness requirement does not make the first-order Peano Arithmetic categorical and I advance an argument for its categoricity based on the inferential conservativity requirement. (shrink)

Gilles Deleuze: The Intensive Reduction brings together eighteen essays written by an internationally acclaimed team of scholars to provide a comprehensive overview of the work of Gilles Deleuze, one of the most important and influential European thinkers of the twentieth century. Each essay addresses a central issue in Deleuzeʹs philosophy (and that of his regular co-author, Félix Guattari) that remains to this day controversial and unsettled. Since Deleuzeʹs death in 1994, the technical aspects of his philosophy have been largely neglected. (...) These essays address that gap in the existing scholarship by focusing on his contribution to philosophy. Each contributor advances the discussion of a contested point in the philosophy of Deleuze to shed new light on as yet poorly-understood problems and to stimulate new and vigorous exchanges regarding his relationship to philosophy, schizoanlysis, his aesthetic, ethical and political thought. (shrink)

This paper seeks to develop a phenomenological account of the disorientation of grief, specifically the relationship between disorientation and the breakdown in practical self-understanding at the heart of grief. I argue that this breakdown cannot be sufficiently understood as a breakdown of formerly shared practices and habitual patterns of navigating lived-in space that leaves the bereaved individual at a loss as to how to go on. Examining the experience of losing a loved person and a loved person-to-be, I instead propose (...) that this breakdown should be understood primarily in relation to a distinctive kind of futurity operative in disorientation,irrespectiveof the extent to which there is a breakdown of formerly shared practices and habitual patterns of navigating lived-in space. Drawing on the resources afforded by Heidegger’s phenomenology, I argue that it is acore characteristicof the experience of disorientation in grief that the grieving person can no longer meaningfully press ahead into aspecific futural self. This view comes with certain advantages over existing accounts of the temporality of grief for making sense of the disorientated relationship to futurity, which the appeal to Heideggerian resources makes possible. (shrink)

2020 is the year of the first pandemic lived through the Internet. More than half of the world population is now online and because of self-isolation, our moral and social lives unfold almost exclusively online. Two pressing questions arise in this context: how much can we rely on the Internet, as a set of technologies, and how much should we trust online platforms and applications? In order to answer these two questions, I develop an argument based on two fundamental assumptions: (...) the development stage of today’s Internet is a contingent and not a necessary one and technologies are never neutral. My argument is that today’s pandemic produced an acceleration of the change which started almost 30 years ago, one of online migration, datafication and algorithmization of day to day life, a change in which digital technologies take on the classic role of institutions, both formal and informal. My thesis is a descriptive one, although it has some normative implications: this take over is not just a translation, but a modification or mutation which demands a creative collective answer, although users don’t have direct power over it. When they play the role of institutions, these technologies are surrogates or simulacra. I offer the paradigmatic case of online education, an experiment we were forced into because of the pandemic, in order to show that the institutional matrix of education cannot be reproduced online, due to the limitations of the medium and of the applications, especially those concerning physical presence. In the end I will critically address the question of the role played by Artificial Intelligence in the pandemic, and then I will show that the open source ethics was more useful in approaching scientifically and technologically the problems generated by the epidemic. (shrink)

_Columbia Companion to Twentieth-Century Philosophies_ is the first guide to cover both the Anglo-American analytic and European continental traditions. Organized thematically, the volume thoroughly discusses the major movements and fields of each tradition and features the contributions of highly distinguished specialists in their fields. This book is divided into three sections. The first is devoted to highlighting the multidimensional work of philosophers identified with the analytic tradition, with Nicholas Rescher writing on neoidealism, Josephine Donovan commenting on feminist philosophy, Tyler Burge (...) discussing the philosophy of language and mind, and Robert Hanna reflecting on Kant's legacy. The second section presents the thought of those who identified themselves with the continental tradition, featuring Jean Grondin on hermeneutics, Leonard Lawlor on phenomenology, Charles Scott on postmodernism, and Babette Babich on the philosophy of science. This volume also covers logical positivism, naturalism, pragmatism, aesthetics, existentialism, Marxism, the Frankfurt School, structuralism, psychoanalysis, political philosophy, ethics, and the philosophy of religion. The final section addresses concurrent trends in Indian, Chinese, Japanese, and African philosophy, and a comprehensive introduction by the editor not only provides a thorough outline of the problems and issues of the analytic and continental traditions but also boldly challenges the conviction that the two approaches must be rivals. _Columbia Companion to Twentieth-Century Philosophies_ is an invaluable overview of the ideas that have shaped a monumentally important century in the history of philosophy, offering an unusually panoramic perspective that allows readers to form their own interpretations of original materials. (shrink)