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.

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.

Die Quellen der Aristoteles-Rezeption bzw. der aristotelischen Logik im byzantinischen Mittelalter sind nur teilweise oder gering erforscht. Eine der wichtigen Autoritäten dieser Tradition stellt Leon Magentenos (12. Jh.?) dar. Magentenos war Metropolit von Mytilene sowie ein Gelehrter, der Kommentare zu allen sechs Traktaten des aristotelischen Organon (Categoriae, De Interpretatione, Analytica Priora, Analytica Posteriora, Topica, Sophistici Elenchi) verfasst hat. Hier wird die kritische Edition des Kommentars zum zweiten Buch der Ersten Analytik zusammen mit seiner Übersetzung ins Englische vorgelegt. Untersucht werden auch (...) die dem Kommentar angehängten syllogistischen Diagramme. Kommentare zu Analytica Priora II nach der Spätantike und vor Magentenos waren eher eine Rarität, daher ist sein Kommentar eine wichtige Quelle für alle Forscher, die sich mit der Geschichte der byzantinischen Logik und der aristotelischen Kommentierung befassen. (shrink)

In this paper we present a category equivalent to that of tense Nelson algebras. The objects in this new category are pairs consisting of an IKt-algebra and a Boolean IKt-congruence and the morphisms are a special kind of IKt-homomorphisms. This categorical equivalence permits understanding tense Nelson algebras in terms of the better–known IKt-algebras.

Measurement is a process aimed at acquiring and codifying information about properties of empirical entities. In this paper we provide an interpretation of such a process comparing it with what is nowadays considered the standard measurement theory, i.e., representational theory of measurement. It is maintained here that this theory has its own merits but it is incomplete and too abstract, its main weakness being the scant attention reserved to the empirical side of measurement, i.e., to measurement systems and to the (...) ways in which the interactions of such systems with the entities under measurement provide a structure to an empirical domain. In particular it is claimed that (1) it is on the ground of the interaction with a measurement system that a partition can be induced on the domain of entities under measurement and that relations among such entities can be established, and that (2) it is the usage of measurement systems that guarantees a degree of objectivity and intersubjectivity to measurement results. As modeled in this paper, measurement systems link the abstract theory of measuring, as developed in representational terms, and the practice of measuring, as coded in standard documents such as the International Vocabulary of Metrology. (shrink)

Este artigo se propõe a refletir sobre um leque de conceitos inerentes à alegria por meio de figuras que encarnam a estética da sobra, neste caso, o bobo e o palhaço. Dos gregos até o final do século 19, a filosofia permaneceu a pensar o que é sério. Em 1677, com a publicação de Ética, Baruch Spinoza pensou os afetos, um deles, a alegria, ainda que a tenha pensado com a retidão de um geômetra. A escrita spinoziana é o sério (...) que pensa a alegria. Somente na segunda metade do século 19, Friedrich Nietzsche alegra a escrita filosófica. Em um mundo onde crianças cada vez mais ignoram o sentido do bobo e do palhaço para a vida, refletir sobre a alegria neste artigo é tentar devolver a essa palavra sua profunda originalidade, sentido ausente em dias hodiernos. (shrink)

We are at the moment experiencing renewed interest in the life and work of Aldo Capitini, the Italian philosopher of nonviolence, who was born in Perugia in 1899 and died there in 1968. Conferences, publications, and meetings are drawing the Italian public's attention to his pure lifestyle, deeply marked first by the courageous choice to oppose fascism, then by the long period during which he was marginalized by the university world and official culture; but attention has also been drawn (...) to his numerous writings (from his Elementi di una esperienza religiosa, published in 1937 at the height of the fascist regime, with the help of Benedetto Croce, to Religione aperta, one of the last books to be placed on the Index by the Catholic Church, and finally the essay Attraverso due terzi del secolo, which appeared posthumously in Guido Calogero's journal La Cultura), and to his tireless activity as the driving force behind movements and initiatives (it was Capitini, amongst others, who organised the first peace march from Perugia to Assisi in 1961). (shrink)

The IKt-algebras that we investigate in this paper were introduced in the paper An algebraic axiomatization of the Ewald’s intuitionistic tense logic by the first and third author. Now we characterize by topological methods the subdirectly irreducible IKt-algebras and particularly the simple IKt-algebras. Finally, we consider the particular cases of finite IKt-algebras and complete IKt-algebras.

Human coalitions frequently persist through multiple, overlapping membership generations, requiring new members to cooperate and coordinate with veteran members. Does the mind contain psychological adaptations for interacting within these intergenerational coalitions? In this paper, we examine whether the mind spontaneously treats newcomers as a motivationally privileged category. Newcomers—though capable of benefiting coalitions—may also impose considerable costs (e.g., they may free ride on other members, they may be poor at completing group tasks). In three experiments we show (1) that the mind (...) categorizes coalition members by tenure, including newcomers; (2) that tenure categorization persists in the presence of orthogonal and salient social dimensions; and (3) that newcomers elicit a pattern of impressions consistent with their probable ancestral costs. These results provide preliminary evidence for a specialized component of human coalitional psychology: an evolved concept of newcomer. (shrink)

The algorithm has become an increasingly important concept in understanding human behavior in recent years. In the case of sport, human bodies are seen as superficial to the driving force of the algorithm, whether it be genetic, behavioral or surveillance-technological algorithms (Harari Citation2015, 2020; Zuboff Citation2019). However, the French mathematician and philosopher Michel Serres (1930–2019) structurally relate algorithms to sports and bodily experience at multiple places in his oeuvre. According to Serres, sport actually enables us to reprogram and rewrite our (...) behavior, moods and thoughts, and therefore modifies our algorithmic status (Serres Citation1999, Citation2019). Against deterministic conceptions of the body, Serres argues that human bodies possess a ‘metamorphic’ nature that is similar to the procedural character of computer programs. This paper investigates the relationship between the algorithm and bodily existence through a reading of both Harari and Serres on sport. It will be argued that, against deterministic conceptions of the algorithm, the algorithm can actually broaden an understanding of the role of sports and physical activity. (shrink)

In this paper we aim to show an intrinsic contradiction of contemporary Metaphysical Realism by focusing on the relation between the subject and the object. Metaphysical Realism considers facts and objects as being empirical, and therefore they are considered in relation to the subject, while at the same time facts are assumed to belong to an autonomous and independent reality. However, if a real object is considered to be independent from the subject, once it enters in a relation with the (...) latter, a real object must undergo an intrinsic transformation. However, since an object cannot avoid this transformation then recovering the real or “absolute” object from the perceived object is not possible. In this way, the inherent contradiction of the “absolute” as being determined, i.e., defined by virtue of a limit, is revealed. (shrink)

If the laws of nature are as the Humean believes, it is an unexplained cosmic coincidence that the actual Humean mosaic is as extremely regular as it is. This is a strong and well-known objection to the Humean account of laws. Yet, as reasonable as this objection may seem, it is nowadays sometimes dismissed. The reason: its unjustified implicit assignment of equiprobability to each possible Humean mosaic; that is, its assumption of the principle of indifference, which has been attacked on (...) many grounds ever since it was first proposed. In place of equiprobability, recent formal models represent the doxastic state of total ignorance as suspension of judgment. In this paper I revisit the cosmic coincidence objection to Humean laws by assessing which doxastic state we should endorse. By focusing on specific features of our scenario I conclude that suspending judgment results in an unnecessarily weak doxastic state. First, I point out that recent literature in epistemology has provided independent justifications of the principle of indifference. Second, given that the argument is framed within a Humean metaphysics, it turns out that we are warranted to appeal to these justifications and assign a uniform and additive credence distribution among Humean mosaics. This leads us to conclude that, contrary to widespread opinion, we should not dismiss the cosmic coincidence objection to the Humean account of laws. (shrink)

In our paper, monadic modal pseudocomplemented De Morgan algebras are considered following Halmos’ studies on monadic Boolean algebras. Hence, their topological representation theory is used successfully. Lattice congruences of an mmpM is characterized and the variety of mmpMs is proven semisimple via topological representation. Furthermore and among other things, the poset of principal congruences is investigated and proven to be a Boolean algebra; therefore, every principal congruence is a Boolean congruence. All these conclusions contrast sharply with known results for monadic (...) De Morgan algebras. Finally, we show that the above results for mmpM are verified for monadic tetravalent modal algebras. (shrink)

Gupta's book [9] contains a theory of modal logic that is closely related to my modal language ML v [2], and his theory is used to treat some interesting philosophical problems. Hence, it is natural for me to review this valuable book and to concentrate on its logics, the more so as its use has already been spoken of and appreciated by Kapitan [10], although I cannot but share his appreciation.

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.

This article demonstrates the importance of making explicit different conceptions of movement for the philosophy of sport. In addition to the mechanistic and the Aristotelian approaches, this article presents a third, underexplored view of movement, namely that of Lucretius as interpreted by Karl Marx and Michel Serres. By exploring the similarities between Marx’s motion of repulsion and Serres’s turbulent flux, it will be argued that a Lucretian view offers a philosophy of movement that uniquely does not rely on stasis. This (...) Lucretian perspective is illustrated through Serres’s elaborations on the body and sport. It is concluded that sport is not primarily a rational, rule-guided practice but arises from moving and sensuous bodies that are always deviating from their standard trajectory. (shrink)

In this paper I examine the testimonium of Aristotle’s Rhetoric concern­ing Diogenes the Cynic. This piece of evidence is the most ancient source of Diogenes and proves that Aristotle was familiar with his writings. I also study the testimonium on Diogenes that is hand­ed down by Theophrastus, which confirms the interest of the ancient Peripatos in this philosopher. Finally, I examine a passage of Book 1 of the Politics where Aristotle refers to the thesis on the aboli­tion of money. I (...) argue that such a thesis could be ascribed to Diogenes. In particular, I attempt to demonstrate that several theses of political philosophy put forward by Diogenes should be considered as constitut­ing a polemical overthrow of the corresponding theses of Aristotle in Book 1 of his Politics. (shrink)

This paper offers a diachronic reconstruction of MacCormick's theory of law and legal argumentation: In particular, two related points will be highlighted in which the difference between the perspective upheld in Legal Reasoning and Legal Theory and the later writings is particularly marked. The first point concerns MacCormick's gradual break with legal positivism, and more specifically the thesis that the implicit pretension to justice of law proves legal positivism false in all its different versions. The second point concerns MacCormick's acceptance (...) of the one-right-answer thesis and the consequent thinning of the differences between MacCormick's theory of legal reasoning and that of Ronald Dworkin and of Robert Alexy. The intent, however, is not only to describe this change in MacCormick's thought, but also to attempt a defence of the original view that we find in Legal Reasoning and Legal Theory. (shrink)

Abstract.The aim of this paper is to examine the work of Tschirnhaus, La Hire and Leibniz on the theory of caustics, a subject whose history is closely linked to geometrical optics. The curves in question were examined by the most eminent mathematicians of the 17th century such as Huygens, Barrow and Newton and were subsequently studied analytically from the time of Tschirnhaus until the 19th century.Leibniz was interested in caustics and the subject probably inspired him in his discovery of the (...) concept of envelopes of lines. (shrink)

English summary: Aldo Giorgio Gargani innovates in his use of Wittgensteinian concepts to argue that the formation of scientific and philosophical knowledge is not a linear progression, but a collection of instruments or conceptual and behavioral models, decisional procedures that are born of the different forms of human life as extensions of their anthropological contexts. Through this book Gargani demonstrates how Wittgensteins thinking can be used a truly efficient toolbox. French description: Aldo Giorgio Gargani (1933-2009) fait dans ce (...) livre un usage novateur des concepts wittgensteiniens pour soutenir que la formation du savoir scientifique et philosophique n'est pas une progression lineaire, cumulative et definitive de techniques cognitives: le savoir est plutot un recueil d'instruments, d'habitus conceptuels, de modeles comportementaux, de conduites operationnelles et de procedures decisionnelles qui naissent des formes de vie des hommes, en tant qu'extensions de leurs contextes anthropologiques. Si l'expression savoir sans fondements est maintenant tres repandue dans les sciences humaines, c'est Gargani qui a magistralement elabore toutes les consequences de cette idee, et son livre est l'analyse la plus riche de ces rituels epistemologiques qui decoulent de notre agir humain, lui-meme depourvu de fondements. A travers ce livre on voit comment la pensee de Wittgenstein peut etre utilisee comme une boite a outils veritablement efficace. (shrink)

In the following interview with Manlio Iofrida, Aldo Giorgio Gargani retraces the fundamental moments and key phases of his intellectual development: his early childhood and adolescence in Genoa, strongly marked by the influence of his artist father and of the social context of the immediate post-war situation; his studies at the Scuola Normale Superiore in Pisa, and subsequently at the University of Oxford, which resulted to his first book on Wittgenstein; the achievement during the 1960s of a distinctive philosophical (...) position of his own, reflected in the publication of the book Il sapere senza fondamenti [Knowledge without Foundations]; the renewal of philosophical culture in Italy in the 1980s and 1990s, in which Gargani himself was one of the main protagonists; the return to an engagement with Wittgenstein, after a period in which he had dedicated himself principally to literary questions and concerns, one pursued specifically in the context of the new issues raised at the beginning of the 21st century. This historical and autobiographical reconstruction of his intellectual career is accompanied at every turn by philosophical reflections on our contemporary situation and by specific critical responses to other contemporary philosophical trends and developments: the interview thus constitutes a telling summation of the fundamental themes and aspects of the author’s thought in general. (shrink)

The Choquet expected utility model deals with nonadditive probabilities (or capacities). Their dependence on the information the decision-maker has about the possibility of the events is taken into account. Two kinds of information are examined: interval information (for instance, the percentage of white balls in an urn is between 60% and 100%) and comparative information (for instance, the information that there are more white balls than black ones). Some implications are shown with regard to the core of the capacity and (...) to two additive measures which can be derived from capacities: the Shapley value and the nucleolus. Interval information bounds prove to be satisfied by all probabilities in the core, but they are not necessarily satisfied by the nucleolus (when the core is empty) and the Shapley value. We must introduce the constrained nucleolus in order for these bounds to be satisfied, while the Shapley value does not seem to be adjustable. On the contrary, comparative information inequalities prove to be not necessarily satisfied by all probabilities in the core and we must introduce the constrained core in order for these inequalities be satisfied. However, both the nucleolus and the Shapley value satisfy the comparative information inequalities, and the Shapley value does it more strictly than the nucleolus. (shrink)

In this paper we investigate the class of MV-algebras equipped with two quantifiers which commute as a natural generalization of diagonal-free two-dimensional cylindric algebras. In the 40s, Tarski first introduced cylindric algebras in order to provide an algebraic apparatus for the study of classical predicate calculus. The diagonal–free two-dimensional cylindric algebras are special cylindric algebras. The treatment here of MV-algebras is done in terms of implication and negation. This allows us to simplify some results due to Di Nola and Grigolia (...) :125–139, 2004) related to the characterization of a quantifier in terms of some special sub-algebra associated to it. On the other hand, we present a topological duality for this class of algebras and we apply it to characterize the congruences of one algebra via certain closed sets. Finally, we study the subvariety of this class generated by a chain of length n + 1. We prove that the subvariety is semisimple and we characterize their simple algebras. Using a special functional algebra, we determine all the simple finite algebras of this subvariety. (shrink)

La ricerca qui proposta si rivolge al programma di radicale naturalizzazione della mente e, in particolare, alla posizione del monismo materialistico che esso produce. L’articolo si propone di individuare gli assunti fondamentali sui quali tale programma poggia. Un primo assunto identificato e discusso criticamente all’interno del lavoro concerne una concezione corrispondentista della verità. Un secondo assunto fa riferimento ad una concezione secondo la quale lo studio della mente si riduce all’individuazione di relazioni causali e leggi che regolano processi meccanici, mentre (...) si possono considerare scientifiche solo quelle forme di indagine fondate sul principio di chiusura del mondo fisico. L’analisi si conclude sottolineando come il presupposto più significativo si riveli essere la negazione della soggettività e della coscienza, la quale viene ridotta/ricondotta a operazioni inconsce e inintelligenti. In problema rincontrato a questo rispetto è identificato nel fatto di non fare valere la fondamentale distinzione teoretica tra condizione empirica e condizione di intelligibilità. (shrink)

Can stable regularities be explained without appealing to governing laws or any other modal notion? In this paper, I consider what I will call a ‘Humean system’—a generic dynamical system without guiding laws—and assess whether it could display stable regularities. First, I present what can be interpreted as an account of the rise of stable regularities, following from Strevens [2003], which has been applied to explain the patterns of complex systems (such as those from meteorology and statistical mechanics). Second, since (...) this account presupposes that the underlying dynamics displays deterministic chaos, I assess whether it can be adapted to cases where the underlying dynamics is not chaotic but truly random—that is, cases where there is no dynamics guiding the time evolution of the system. If this is so, the resulting stable, apparently non-accidental regularities are the fruit of what can be called statistical necessity rather than of a primitive physical necessity. (shrink)

The IKt-algebras were introduced in the paper An algebraic axiomatization of the Ewald’s intuitionistic tense logic by the first and third author. In this paper, our main interest is to investigate the principal and Boolean congruences on IKt-algebras. In order to do this we take into account a topological duality for these algebras obtained in Figallo et al. :673–701, 2017). Furthermore, we characterize Boolean and principal IKt-congruences and we show that Boolean IKt-congruence are principal IKt-congruences. Also, bearing in mind the (...) above results, we obtain that Boolean IKt-congruences are commutative, regular and uniform. Finally, we characterize the principal IKt-congruences in the case that the IKt-algebra is linear and complete whose prime filters are complete and also the case that it is linear and finite. This allowed us to establish that the intersection of two principal IKt-congruences on these algebras is a principal one and also to determine necessary and sufficient conditions so that a principal IKt-congruence is a Boolean one on theses algebras. (shrink)

This is a title on the foundations of defeasible logic, which explores the formal properties of everyday reasoning patterns whereby people jump to conclusions, reserving the right to retract them in the light of further information. Although technical in nature the book contains sections that outline basic issues by means of intuitive and simple examples. This book is primarily targeted at philosophers interested in the foundations of defeasible logic, logicians, and specialists in artificial intelligence and theoretical computer science.

Certain results, most famously in classical statistical mechanics and complex systems, but also in quantum mechanics and high-energy physics, yield a coarse-grained stable statistical pattern in the long run. The explanation of these results shares a common structure: the results hold for a 'typical' dynamics, that is, for most of the underlying dynamics. In this paper I argue that the structure of the explanation of these results might shed some light --a different light-- on philosophical debates on the laws of (...) nature. In the explanation of such patterns, the specific form of the underlying dynamics is almost irrelevant. The conditions required, given a free state-space evolution, suffice to account for the coarse-grained lawful behaviour. An analysis of such conditions might thus provide a different account of how regular behaviour can occur. This paper focuses on drawing attention to this type of explanation, outlining it in the diverse areas of physics in which it appears, and discussing its limitations and significance in the tractable setting of classical statistical mechanics. (shrink)

Na primeira parte, fazemos um levantamento das ocorrências de pithanon (‘persuasivo’) e termos afins em textos e fragmentos do estoicismo antigo referentes à persuasão de asseríveis e argumentos e em textos e fragmentos em que a lógica estoica se apresenta como ferramenta para evitar a persuasão dos sofismas e o sábio estoico como aquele que capaz de vencer essa persuasão por sua perícia em dialética. Feito isso, consideramos criticamente as teses de Chiaradona, Sedley e Tieleman, para quem Crisipo está interessado (...) em formas extralógicas de discurso. Avaliaremos também a tese de Tieleman segundo a qual Crisipo usa premissas persuasivas para fins construtivos. Em nossas conclusões, descartamos a tese sobre o reconhecimento de verdades extralógicas por Crisipo com base no ideal do sábio estoico. Concluímos que, no estoicismo, (1) pithanon refere-se principalmente a falsas afirmações, argumentos e representações e (2) que o sábio estoico não pode ser persuadido, mas pode persuadir seus ouvintes a fim de preparar suas almas para receber as doutrinas estoicas. (shrink)

In this paper I examine the testimonium of Aristotle’s Rhetoric concern­ing Diogenes the Cynic. This piece of evidence is the most ancient source of Diogenes and proves that Aristotle was familiar with his writings. I also study the testimonium on Diogenes that is hand­ed down by Theophrastus, which confirms the interest of the ancient Peripatos in this philosopher. Finally, I examine a passage of Book 1 of the Politics where Aristotle refers to the thesis on the aboli­tion of money. I (...) argue that such a thesis could be ascribed to Diogenes. In particular, I attempt to demonstrate that several theses of political philosophy put forward by Diogenes should be considered as constitut­ing a polemical overthrow of the corresponding theses of Aristotle in Book 1 of his Politics. (shrink)

Apresentação e tradução da Diatribe 1.1 de Epicteto.

Caros pesquisadores, segue nosso número 27, com artigos de fluxo contínuo e mais um dossiê estoicismo com os textos referentes ao segundo colóquio Epicteto, que se realizou em 2017 na cidade de Niterói, no campus da UFF. Neste dossiê temos onze artigos, muitos dos quais de pesquisadores que consagram seus esforços à compreensão do pensamento do velho de Hierápolis. Após o dossiê, temos os artigos de fluxo contínuo. A edição se encerra com uma tradução. Boa leitura a todos. Os editores.

O artigo aborda o ensino e a aprendizagem de filosofia a partir da noção de criação de conceitos, conforme o entendimento de Deleuze. Para isso, discute o que significa criar conceitos em filosofia, associando essa concepção a uma nova imagem do pensamento que entende a criação de conceitos como o dizer do acontecimento, o sentido incorporal produzido pelo efeito do encontro dos corpos. Depois estabelece os vínculos entre o sentido e o acontecimento com uma nova imagem sobre ensinar e aprender (...) filosofia e conclui com a figura do teatro para compreender esses vínculos. (shrink)