Thomas Reid (1710–1796) presented a two-dimensional geometry of the visual field in his Inquiry into the human mind (1764), whose axioms are different from those of Euclidean plane geometry. Reid’s ‘geometry of visibles’ is the same as the geometry of the surface of the sphere, described without reference to points and lines outside the surface itself. Interpreters of Reid seem to be divided in evaluating the significance of his geometry of visibles in the history of the discovery of non-Euclidean geometries. (...) The question will be reexamined with particular attention given to his unpublished manuscripts. These include comments on Saccheri’s work and Reid’s repeated attempts to derive Euclid’s parallel postulate from the axioms of incidence. (shrink)

Richard Owen has been condemned by Darwinians as an anti-evolutionist and an essentialist. In recent years he has been the object of a revisionist analysis intended to uncover evolutionary elements in his scientific enterprise. In this paper I will examine Owen's evolutionary hypothesis and its connections with von Baer's idea of divergent development. To give appropriate importance to Owen's evolutionism is the first condition to develop an up-to-date understanding of his scientific enterprise, that is to disentagle Owen's contribution to the (...) modernization of typology and morphology. I will argue that Owen's Platonic essentialism is rhetorical and incongruous. On the contrary, an interpretation of the archetype based on Aristotle's biological works makes possible a new conception of type, based on a homeostatic mechanism of stability. The renewal of morphology hinges on homological correspondences and a homeostatic process is also the origin of serial and special homology. I will argue that special homology shows an evolutionary orientation insofar as it is a typically inter-specific character while serial homology is determined through an elementary usage of the categories of developmental morphology. (shrink)

Thomas Reid presented a two-dimensional geometry of the visual field in his Inquiry into the Human Mind (1764). The axioms of this geometry are different from those of Euclidean plane geometry. The ‘geometry of visibles’ is the same as the geometry of the surface of the sphere, described without reference to points and lines outside the surface itself. In a recent article, James Van Cleve has argued that Reid can secure a non-Euclidean geometry of visibles only at the cost of (...) abandoning his direct realist theory of perception, and reintroducing sense-data. The question will be reexamined by considering two aspects of Reid’s theory of vision: the claim that we do not directly perceive distance by sight and Reid’s characterization of visible figure as a partial notion of an external object. (shrink)

According to Reid, color sensations are not extended nor are they arranged in figured patterns. Reid further claimed that ‘there is no sensation appropriated to visible figure.’ Reid justified these controversial claims by appeal to Cheselden's report of the experiences of a young man affected by severe cataracts, and by appeal to cases of perception of visible figure without color. While holding fast to the principle that sensations are not extended, Dugald Stewart tried to show that ‘a variety of colour (...) sensations is a necessary means for the perception of visible figure.’ According to John Fearn, two motives appear to be central to Reid's views about color sensations and extension: his commitment to the Cartesian doctrine of the immateriality of the soul, and his attempt to evade ‘Hume's dilemma’ about the existence and immateriality of the soul. (shrink)

In order to illustrate the difference between sensation and perception, Reid imagines a blind man that by ‘some strange distemper’ has lost all his notions of external objects, but has retained the power of sensation and reasoning. Reid argues that since sensations do not resemble external objects, the blind man could not possibly infer from them any notion of primary qualities. Condillac proposed a similar thought experiment in the Treatise on Sensations. I argue that Condillac can reach a conclusion opposite (...) to that of Reid only by assuming that some particular collections of sensations do indeed resemble the qualities of external objects. Reid had considered a similar case in a manuscript, but he again notices that such complex collections sensations do not resemble the qualities of external objects. (shrink)

According to Reid, opinions that contradict the principles of common sense are not only false but also absurd. Nature has given us an emotion that reveals the absurdity of an opinion: the emotion of ridicule. An appeal to ridicule in philosophical arguments may easily be discounted as a logical fallacy in the same manner as an appeal to the common consent of people. This essay traces the origins of Reid's defense of ridicule in the works of Addison, Hutcheson, Shaftesbury and (...) Campbell. Reid rejected a non-epistemic view of the sense of ridicule. According to Reid, ridicule includes both a feeling and a particular act of judgment based on the principles of common sense. (shrink)

While Hume had a favorable opinion of the new commercial society, Reid envisioned a utopian system that would eliminate private property and substitute the profit incentive with a system of state-conferred honors. Reid’s predilection for a centralized command economy cannot be explained by his alleged discovery of market failures, and has to be considered in the context of his moral psychology. Hume tried to explain how the desire for gain that motivates the merchant leads to industry and frugality. These, in (...) their turn, benefit all society. Reid still saw the desire for money as a degenerate form of the desire for power. The contrast between Hume and Reid, however, has not to be taken too far. On some particular matters of economic policy, such as paper credit, Hume and Reid eventually came to similar views. (shrink)

In a recent article on Reid’s theory of single and double vision, James Van Cleve considers an argument against direct realism presented by Hume. Hume argues for the mind-dependent nature of the objects of our perception from the phenomenon of double vision. Reid does not address this particular argument, but Van Cleve considers possible answers Reid might have given to Hume. He finds fault with all these answers. Against Van Cleve, I argue that both appearances in double vision could be (...) considered visible figures of the object, and show how this solution might preserve Reid’s direct realism. However, this solution is not compatible with the single appearance of an object predicted by Reid’s theory of single and double vision. This consequence will appear evident once we consider the critique of Reid’s theory of single and double vision formulated by William Charles Wells (1757-1817). Wells argues that Reid’s theory is either incomplete or incompatible with other claims made by Reid. It is incomplete since it fails to specify the unique direction in which we the object in single vision; if it not incomplete and is compatible with the law of monocular direction given by Reid, then it is incompatible with Reid’s claim that we do not perceive immediately distance by sight. (shrink)

Gli antichi Greci la chiamavano métis. Parola comune e anche nome mitologico di divinità. Se consultiamo il vocabolario, ne troviamo due significati: "saggezza" ispirata a "prudenza" e "disegno", nel senso di "piano" concepito da qualcuno. La flessibilità ha a che fare soprattutto con il secondo significato, perché è razionalità strategica e agonistica, in cui la duttilità è insieme ragion d'essere, modo di operare e scopo. Giovanni Bottiroli sostiene da tempo la necessità di elaborare una filosofia di tipo modale, che (...) apra le categorie della logica classica alla coppia rigido/flessibile. In questo saggio porta a compimento una teoria estremamente articolata degli stili di pensiero, la sola che giudica in grado di comprendere l'eterogeneità della mente, il pluralismo logico e semantico, l'identità come polisemia. Se definiamo "rigido" ogni soggetto il cui modo d'essere è la coincidenza con se stesso, la flessibilità non può ridursi infatti a una rigidità indebolita: è inclusiva e avvolgente e le spetta il primato sul piano logico, etico ed estetico. Perché è la flessibilità a renderci liberi. (shrink)

In this paper the authors analyze the two most important interrelated processes of social change in Italian agriculture: first the increasing productive specialization of family farming, both full and part-time, lending to the persistence of small farms but also to their growing integration and complementarity with other economic activities; and second the increasing heterogeneity of agricultural workers accompanied by the destructuring of their strong working-class identity, which had matured in the previous decades. This identity, however, also reflected a deep separation (...) between agricultural laborers, their labor market and institutions, and the rest of the working class. The authors argue that these changes are progressively contributing to the full integration of agricultural social relations within an increasingly complex society. The analysis of these two processes in recent Italian experience shows that this trend towards integration differs totally from the hypothesis often advanced in the past according to which the integration of agriculture would occur through the development of green factories, more and more similar to large Fordist manufacturing plants. On the contrary, at least in present-day Italy, integration means increasing heterogeneity, also of organizational patterns in manufacturing, and growing inter-dependence. (shrink)

The paper argues for viewing legal validityas a doxastic obligation, i.e. as the obligation toaccept a rule in legal reasoning. This notion of legalvalidity is shown to be both sufficient for thelaywers' needs and neutral in regard to varioustheories of the grounds of validity, i.e. theoriesintended to identify what rules are legally valid, byproposing different grounds for attributing validity.All of these theories, rather then being alternativedefinitions of validity, presuppose the notion hereprovided.This notion is purely normative, but it allows for theconstruction (...) of theories of the grounds of validitywhich give due importance to social expectations andinstitutions. As an example of how this may happen,one such theory is also provided. This theory, whichis presented through a detailed example of a judicialdebate, is based upon the recognition of the(instrumental) value of co-ordination, as thenecessary way to achieve the most valuable purposes ofthe law. (shrink)

My paper is related to applied ethics with special reference to the ethics of communication. The task of this discipline is to defend otherness in the various contexts where it exists. The departure point for my paper is the observation that the physician–patient relationship, instead of being the place of therapeutic alliance, is increasingly becoming a source of conflict, as is shown by the statistics on legal actions between doctors and patients, lack of communication skills identified amongst patients, and cases (...) of burnout amongst doctors. This situation calls on ethics to take two steps simultaneously. Firstly, it must not forego the duty of indicating the rules. Secondly, it must be capable of suggesting directions where those same rules can be applied. Succeeding in this task is decisive not only in domains where the ethical approach may be welcomed, but also for ethics as such, otherwise destined to be a disembodied specialization. (shrink)

This volume features more than 25 papers that were presented at the 2014 Conference of the International Association for the Study of Controversies, IASC, held at the University of Salento, Lecce, Italy. It looks at conflict and conflict resolution from diverse perspectives, including philosophy, psychology, law, and history. Coverage explores the paradox of conflict and examines how discord, whether large or small, international or internal, can be both a source of chaos as well as a foundation for unity, a limitation (...) of potential as well as an entryway to a greater depth of living. Inside, readers will discover thought-provoking answers to such questions as: What are the conditions to ensure that a conflict can be converted into cooperation? If the conflict between interests can be solved by a compromise, what happens when a conflict involves non-negotiable values​​? In the management of a conflict, what role is played by argumentation? What are the latest perspectives in conflict management? How does the theory of controversies allows us to recognize and resolve conflicts? By the end of the book, readers will have a better understanding of how conflict can be transcended and how it's possible to redefine the conflicting situation so that what seemed incompatible and locked may, in fact, open a new perspective. (shrink)

Tensegrity, multivocity and the ethics of images When transposed to the field of philosophy, the notion of tensegrity can become the matrix to justify an approach to reality, based on the contextual action of several factors. This specificity is shown with reference to the photographs of patients allegedly hysterical, photographed at the end of the nineteenth century in the Hospital Salpêtrière in Paris. The ethics of images is anchored in this possibility. In fact, it is not indifferent with respect to (...) both the modalities in which a knowledge can be correctly configured, and with respect to the role of the subject-spectator in such an operation. (shrink)

In the present work Berkeley's theory of vision is considered in its historical origins, in its relation to Berkeley's general philosophical conceptions, and in its early reception. Berkeley's theory replaces an account of vision according to which distance and other spatial properties are deduced from elementary data through an unconscious geometric inference. This account of vision in terms of "natural geometry" was first introduced by Descartes and Malebranche. Among Berkeley's immediate sources of knowledge of the geometric theory of perception, a (...) key role was played by the treatise of dioptrics of William Molyneux, Dioptrica Nova. Berkeley's understanding of "natural geometry" relies closely on Molyneux's description of the mechanism of vision which avoids the complexities of the accounts of Descartes and Malebranche. In the first chapter Berkeley's theory is presented by way of contrast with Molyneux's theory. In the second chapter I consider the relation between the theory of vision and immaterialism. In the final chapter I examine one of the first criticisms of Berkeley's theory, that which is found in William Porterfield's Treatise on the Eye. Dept. of Philosophy. Paper copy at Leddy Library: Theses & Major Papers - Basement, West Bldg. / Call Number: Thesis1997.G72. Source: Masterss International, Volume: 37-01, page: 0076. Adviser: John P. Wright. Thesis --University of Windsor, 1997. (shrink)

According to Daniel Flage, Berkeley thinks that all necessary truths are founded on acts of will that assign meanings to words. After briefly commenting on the air of paradox contained in the title of Flage’s paper, and on the historical accuracy of Berkeley’s understanding of the abstractionist tradition, I make some remarks on two points made by Flage. Firstly, I discuss Flage’s distinction between the ontological ground of a necessary truth and our knowledge of a necessary truth. Secondly, I discuss (...) Flage’s attempt to show that, according to Berkeley, the resemblance relation does not constitute a necessary connection. (shrink)

Two theses appear to be central to Reid’s view of the visual field. By sight, we do not originally perceive depth or linear distance from the eye. By sight, we originally perceive the position that points on the surface of objects have with regard to the centre of the eye. In different terms, by sight, we originally perceive the compass direction and degree of elevation of points on the surface of objects with reference to the centre of the eye. I (...) consider various problems about distance perception and perception of position with regard to the centre of the eye raised by Reid’s texts. These questions are relevant to Reid’s description of the geometry of visibles as the “intrinsic” geometry of the surface of the sphere. (shrink)

Il saggio recensisce i primi quattro volumi dell’Annuario di studi filosofici “Anthropologica” – La differenza umana. Riduzionismo e antiumanesimo ; La struttura dei legami ; La vita in questione. Potenziamento o compimento dell'essere umano? ;Chi dice io? Riflessioni sull’identità personale – illustrando il programma di ricerca sviluppato dal gruppo interdisciplinare di studio promosso dal Centro Studi Jacques Maritain. Attraverso il ricorso all’impianto filosofico dell’antichità classica e cristiana, unitamente agli sviluppi contemporanei della tradizione personalista, gli autori affrontano numerose questioni dell’attuale dibattito (...) sull’umano: particolarmente significativo è il confronto con le diverse forme di antiumanesimo che in modo diretto o indiretto emergono nei settori delle scienze della vita, specialmente lì dove si profilano nuove possibilità di intervento sulla natura umana aperto dallo sviluppo tecnologico. (shrink)

The paper defends the theoretical strength and consistency of Rawls's constructivism, showing its ability to articulate and convincingly weave together several key ethical ideas; yet it questions the political relevance of this admirable normative architecture. After having illustrated Rawls's conception of moral agency and practical reason, the paper tackles two criticisms raised by Scheffler. First the allegation of naturalism based on Rawls's disdain of common sense ideas on desert is rebutted. It is then shown that, contrary to Scheffler's contention, Rawls (...) takes proper account of our moral sentiments in the process of constructing his normative theory. Finally, the second criticism is assessed, namely the inability of Rawls's theory to increase consent around liberal policies. Despite disagreement with details of Scheffler's argument, it is suggested that the failure of recent normative liberal theories to have a political impact belies their inability to take into proper consideration the reality of politics. A more realistic appraisal of political life and of historical events and developments are called for if political philosophy wants to be something more than an academic exercise. (shrink)

Reid’s rejection of the “theory of ideas” implies that sensations are not copies of external qualities such as extension and figure. Reid also says that not even the order of sensations is spatial. However, in his early manuscripts Reid did not deny that sensations are arranged spatially. He simply denied that our ideas of extension and figure are copied from any single atomic sensation. Only subsequently did Reid explicitly reject the view that sensations are arranged spatially. The question of the (...) spatiality of color sensation was a central concern of early interpreters of Reid, like Dugald Stewart, John Fearn, and William Hamilton. In particular, John Fearn thought that the denial of the spatiality of color sensations is the result of Reid’s commitment to the immateriality of the soul. Against Reid’s view, Fearn argued that the perception of visible figure necessarily implies the spatiality of color sensations. (shrink)

According to Thomas Reid, the development of natural sciences following the model of Newton's Principia and Optics would provide further evidence for the belief in a provident God. This project was still supported by his student, Dugald Stewart, in the early nineteenth century. John Fearn , an early critic of the Scottish common sense school, thought that the rise of ‘infidelity’ in the wake of scientific progress had shown that the apologetic project of Reid and Stewart had failed. In reaction (...) to Reid and Stewart, he proposed an idealist philosophy that would dispense with the existence of matter, and would thus cut at the root what he thought was the main source of modern atheism. In this paper, I consider Fearn's critique of Reid and Stewart in his main works: First Lines of the Human Mind and Manual of the Physiology of Mind . I also consider Fearn's arguments against Hume and in favour of a renewed apologetics in An Essay on the Philosophy of Faith and the Economy of Revelatio.. (shrink)