Leopold first discusses the conservation of natural resources in the southwestern United States in economic tenns, stressing, in particular, erosion and aridity. He then concludes his analysis with a discussion of the moral issues involved, developing his general position within the context of P. D. Ouspenky’s early philosophy of organism.

Gathers the pre-Sand Country Almanac writings of Aldo Leopold, showing that he was not born an ecologist, but evolved over time through experimentation and thought.

Consciousness and Qualia is a philosophical study of qualitative consciousness, characteristic examples of which are pains, experienced colors, sounds, etc.

Leopold Flam (1912-1995) woont voor een groot deel van zijn jeugd in een kelder in Antwerpen. Zijn ouders, Joodse mensen die uit Lublin naar België emigreerden, kunnen lezen noch schrijven, en proberen aan de kost te komen met leuren en bedelen. Op zijn dertiende begint Flam met het bijhouden van een even openhartig als meedogenloos dagboek. Socrates indachtig heeft hij het vaste voornemen zichzelf te leren kennen. Het mag een klein mirakel heten dat Leopold Flam in zijn opzet (...) is geslaagd. Hij overleefde de Holocaust en hij, de bedelaarszoon, werd hoogleraar filosofie. Hij publiceerde artikelen en boeken, maar zijn dagboeken - voor zover bewaard - behoren tot zijn sterkste werk. Ze vormen een aangrijpend epos dat ons de mens Flam laat zien, eerder dan de filosoof. Tegelijkertijd bieden ze een verhelderend tijdsdocument, met onder meer concrete informatie over zijn hulp aan Joden tijdens de Duitse bezetting en notities gemaakt terwijl hij gevangenzat in Buchenwald. Ondanks de vooroordelen en vervolging waarmee hij had af te rekenen, bleef hij geloven in zijn weg uit de duisternis naar het licht."--Publisher information. (shrink)

Correspondence should be addressed to David A. Leopold david.leopold@tuebingen.mpg.deDuring the viewing of certain patterns, widely known as ambiguous or puzzle figures, perception lapses into a sequence of spontaneous alternations, switching every few seconds between two or more visual interpretations of the stimulus. Although their nature and origin remain topics of debate, these stochastic switches are generally thought to be the automatic and inevitable consequence of viewing a pattern without a unique solution. We report here that in humans such (...) perceptual alternations can be slowed, and even brought to a standstill, if the visual stimulus is periodically removed from view. We also show, with a visual illusion, that this stabilizing effect hinges on perceptual disappearance rather than on actual removal of the stimulus. These findings indicate that uninterrupted subjective perception of an ambiguous pattern is required for the initiation of the brain-state changes underlying multistable vision.Visual perception involves coordination between sensory sampling of the world and active interpretation of the sensory data. Human perception of objects and scenes is normally stable and robust, but it falters when one is presented with patterns that are inherently ambiguous or contradictory. Under such conditions, vision lapses into a chain of continually alternating percepts, whereby a viable visual interpretation dominates for a few seconds and is then replaced by a rival interpretation. This multistable vision, or 'multistability', is thought to result from destabilization of fundamental visual mechanisms, and has offered valuable insights into how sensory patterns are actively organized and interpreted in the brain1, 2. Despite a great deal of recent research and interest in multistable perception, however, its neurophysiological underpinnings remain poorly understood. Physiological studies have suggested that disambiguation of ambiguous patterns. (shrink)

Traditional explanations of multistable visual phenomena (e.g. ambiguous figures, perceptual rivalry) suggest that the basis for spontaneous reversals in perception lies in antagonistic connectivity within the visual system. In this review, we suggest an alternative, albeit speculative, explanation for visual multistability – that spontaneous alternations reflect responses to active, programmed events initiated by brain areas that integrate sensory and non-sensory information to coordinate a diversity of behaviors. Much evidence suggests that perceptual reversals are themselves more closely related to the expression (...) of a behavior than to passive sensory responses: (1) they are initiated spontaneously, often voluntarily, and are influenced by subjective variables such as attention and mood; (2) the alternation process is greatly facilitated with practice and compromised by lesions in non-visual cortical areas; (3) the alternation process has temporal dynamics similar to those of spontaneously initiated behaviors; (4) functional imaging reveals that brain areas associated with a variety of cognitive behaviors are specifically activated when vision becomes unstable. In this scheme, reorganizations of activity throughout the visual cortex, concurrent with perceptual reversals, are initiated by higher, largely non-sensory brain centers. Such direct intervention in the processing of the sensory input by brain structures associated with planning and motor programming might serve an important role in perceptual organization, particularly in aspects related to selective attention. (shrink)

Given the apparent nondisplaceability and noncancellability of the derogatory content of slurs, it may appear puzzling that non-derogatory uses of slurs exist. Moreover, these uses seem to be in general available only to in-group speakers, thereby exhibiting a peculiar kind of context-sensitivity. In this paper the author argues that to understand non-derogatory uses we should consider slurs in terms of the kind of social practice their uses instantiate. A suitable theory of social practices has been proposed by McMillan. In typical (...) uses the practice is one of bigotry and discrimination. Non-derogatory uses are only possible to the extent that they consitute acts of an alternative, non-derogatory practice. In the core cases it must be a subversive practice of satire or reappropriation. The social identity of speakers is not an ultimately decisive factor but it is an important constitutive condition: most non-derogatory practices of slur-use can only be performed by a member of the target group. (shrink)

Leopold first discusses the conservation of natural resources in the southwestern United States in economic tenns, stressing, in particular, erosion and aridity. He then concludes his analysis with a discussion of the moral issues involved, developing his general position within the context of P. D. Ouspenky’s early philosophy of organism.

The Young Karl Marx is an innovative and important new study of Marx’s early writings. These writings provide the fascinating spectacle of a powerful and imaginative intellect wrestling with complex and significant issues, but they also present formidable interpretative obstacles to modern readers. David Leopold shows how an understanding of their intellectual and cultural context can illuminate the political dimension of these works. An erudite yet accessible discussion of Marx’s influences and targets frames the author’s critical engagement with Marx’s (...) account of the emergence, character, and (future) replacement of the modern state. This combination of historical and analytical approaches results in a sympathetic, but not uncritical, exploration of such fundamental themes as alienation, citizenship, community, antisemitism, and utopianism. The Young Karl Marx is a scholarly and original work which provides a radical and persuasive reinterpretation of Marx’s complex and often misunderstood views of German philosophy, modern politics, and human flourishing. (shrink)

Both individually and as a collection, these essays will promote understanding and provoke further debate amongst students and established scholars alike.

Most accounts of the derogatory meaning of slurs are semantic. Recently, Nunberg proposed a purely pragmatic account offering a compelling picture of the relation between derogatory content and social context. Nunberg posits that the semantic content of slurs is identical to that of neutral counterparts, and that derogation is a result of the association of slur use with linguistic conventions of bigoted speakers. The mechanism responsible for it is a special kind of conversational implicature. However, this paper argues that Nunberg’s (...) proposal suffers from technical and conceptual problems regarding the application of the concepts of implicature and convention. It is proposed that the implicature mechanism should be replaced by expressive commitment attribution. The account advocated here preserves crucial insights of Nunberg’s analysis, 25–48, 2013a, Analytic Philosophy 54, 350–363, 2013b; Bolinger Nous, 51, 439–462, 2017), giving them a firmer conceptual basis. It supports a distinction between derogation and offensiveness of slurs that improves on the one proposed by Hom and May, 293–313 2013), and sheds light on puzzling borderline cases: the use of slurs by ignorant speakers and controversies surrounding the status of some words as potentially slurs. (shrink)

In order to contribute to the consolidation in the field ofPositive Psychology, we reinvestigated the factor structure of top 10 positive emotions of Barbara Fredrickson. Former research in experimental settings resulted in a three-cluster solution, which we tested withexploratoryandconfirmatorymethodology against different factor models. Within our non-experimental data (N= 312), statistical evidence is presented, advocating for a single factor model of the 10 positive emotions. Different possible reasons for the deviating results are discussed, as well as the theoretical significance to various (...) subfields inPositive Psychology(e.g., therapeutical interventions). Furthermore, the special role ofawewithin the study and its implications for further research in the field are discussed. (shrink)

Im ersten Teil dieser Arbeit zeichne ich den Weg nach, der Chisholm zur Theorie der Zwei Aspekte und damit zur Behandlung von Gustav Theodor Fechners Lehre über das Verhältnis von Leib und Seele geführt hat. Es wird dabei weniger darauf ankommen, Chisholms Argumente zu bewerten als vielmehr zu zeigen, wie diese dazu führen können, eine totgeglaubte Theorie, die Theorie der Zwei Aspekte, und einen ziemlich obskuren Autor, Gustav Theodor Fechner, attraktiv erscheinen zu lassen. Im zweiten Teil werde ich versuchen, aus (...) den vielen Schriften Fechners ein einigermaßen vollständiges Bild seiner Ansichten über das Verhältnis von Leib und und Seele zu erstellen. Ich gelange zu dem Schluß, daß die klassischen Probleme der Theorie der Zwei Aspekte auch in Fechners Werk keine befriedigende Lösung finden. Im dritten Teil werde ich zeigen, daß der Begriff der Person, der aus Chisholms Version der Theorie der Zwei Aspekte fließt, in Fechners Philosophie keinen Platz hat. (shrink)

Keith Lehrer distinguishes three kinds of questions about consciousness: scientific questions, metaphysical questions, and epistemological questions. He leaves the scientific questions to the scientists. He articulates and answers the peculiar epistemological questions posed by consciousness. And he boldly contends that no metaphysical questions about consciousness remain, once the epistemological questions have been answered. This is an astonishing claim. What happened to the metaphysical questions? Were they pseudo-questions? Were they epistemological questions masquerading as metaphysical ones? And isn't it possible that Lehrer's (...) epistemological account of consciousness raises metaphysical questions of its own? I will argue that Lehrer's account of consciousness does leave a metaphysical remainder. To deal with this remainder, Lehrer could try to expand his explanatory framework—but this would involve to a substantial revision of his current views. I end with a speculative proposal that might allow Lehrer acknowledge all the points raised in this paper, but without forcing him to revise his account of consciousness in a substantial way. (shrink)

Rev. ed. of v. 1 of the author's Schicksalsanalyse, first published in 1944.

Following a heuristic modification of the principle of inertia and the principle of equivalence, a higher-dimensional metric theory is constructed on the manifold of the SO(3, 2) De Sitter group which allows us to treat structureless and spinning particles on the same footing. A dimensional analysis of the physical magnitudes is performed.

Zur klarstellung unserer pflichten.--Ästhetisches.--Selbstbesinnung.--Pfeiler der settlichkeit.--Bausteine der gluckseligkeit.--Moralisches.--Auf dem wege zum glauben.