Physicien théoricien, philosophe de la physique et historien des théo­ries physiques, le savant catholique français Pierre Duhem (1861-1916) a profondément marqué la pensée du vingtième siècle. Chacun connaît le Système du monde, dont les dix volu­mes ont contribué à la redécouverte de la science médiévale, et La théorie physique, qui a notamment donné lieu à la célèbre «thèse Duhem-Quine». Si Clio a donc gardé de Duhem le sou­venir d’un grand historien des sciences et d’un philosophe perspicace de la physique, lui-même (...) cependant n’aspirait qu’à être reconnu comme physicien. Son œuvre est en effet traver­sée par un projet scientifique qui consiste à ordonner et à réunir les diverses branches de la physique sous l’égide de la thermo­dynamique dans le cadre d’une théorie représentative et non explicative du réel. C’est ce projet que Duhem a voulu réaliser dans ses publications scientifiques, exposer dans ses écrits philoso­phiques, et finalement cautionner par ses recherches historiques. Cependant l’investissement toujours plus important de Duhem en histoire des sciences et la présence dans son œuvre de con­sidéra­tions apologétiques et d’écrits patriotiques peuvent don­ner à penser qu’il s’est progressivement détourné de ce projet primordial au profit d’autres préoccupations. De même, les tensions qui, à l’inté­rieur de ce projet scientifique, subsistent entre sa volonté unificatrice et sa revendication phénoménaliste peuvent conduire à une relativi­sation de cette dernière, conçue comme une demande contextuelle, passa­gère et finalement peu significative. Sans ignorer ces préoccu­pations historiques, religieuses ou patriotiques, sans négliger ce con­flit d’intérêt entre les deux parties constitutives du projet duhémien, cette étude entend tout d’abord réaffirmer que ce projet scientifique ne sera jamais ni abandonné, ni amputé. Toutefois, dès lors que sont maintenues la permanence, la prio­rité et l’intégralité de ce projet, trois paradoxes surgissent im­médiatement. Si Duhem se voulait avant tout physicien et souhaitait être reconnu comme tel, par quelle extravagance de l’histoire est-il finalement connu pour ses recherches histori­ques et ses travaux philosophiques et non pour ce qui lui tenait le plus à cœur? S’il ne voulait être qu’un illustre physicien, pourquoi s’est-il acharné, au retour du laboratoire, à exhumer de l’oubli les manuscrits et les théories scientifiques des au­teurs médiévaux? Enfin, s’il voulait vraiment établir une physi­que qui soit unifiée, cohérente et parfaite, pourquoi se prive-t-il du réa­lisme et s’embarrasse-t-il du phénoménalisme? Basée sur la corres­pondance inédite de Duhem, cette étude, centrée plus particu­liè­rement sur ce troisième paradoxe, contribue fina­lement à élucider chacun d’eux. (shrink)

First recorded in the 14th century, the analogy of spit-roast meat argues that expecting the Sun to rotate around a strictly immobile Earth would be just as ludicrous as trying to move the fire around the roasting meat. On the contrary, it should be the Earth that spins upon itself in order to glean, from all possible angles, all the benefits of the Sun, just as it is the meat’s responsibility to turn on the spit before the motionless fire for (...) it to be perfectly cooked on all sides. Aimed at demonstrating, in geocentricism, the plausibility of the rotation of the Earth and, in heliocentrism, at supporting the physical reality of this terrestrial rotation, nowadays this analogy barely elicits more than an amused, or even condescending, smile. However, its continued long-term existence and its frequency of use — from the 14th to the 19th century, we found it mentioned by no less than 45 different authors — incited us to finally pay attention to it. We then noticed that beyond its explicitly cosmological scope, it raises, in its own way, the question of the purpose of the natural world: had the latter been conceived based upon humankind, then it is normal, despite what this analogy advocates, that the Sun is at the service of something more important than itself by rotating, to the profit of humankind, around the Earth; conversely, since such an infringement of the rule of common sense, as illustrated by this analogy, can neither be justified nor tolerated, it is up to the Earth to move around the Sun. Tracing the vicissitudes of this analogy, over 6 centuries, is thus not only about reconstructing the largely forgotten history of a presently obsolete analogy, but also about discovering the deeper meaning, henceforth incomprehensible, behind it. In describing how this meaning became progressively lost, one can finally pro­vide an understanding of why, in the present day, we are no longer capable of more than an amused smile when happening upon it! (shrink)

Fra il 1892 e il 1896, lo scienziato francese Pierre Duhem pubblicò, nella «Revue des questions scientifiques», sette articoli che, per la prima volta, fecero conoscere la sua concezione della scienza a un pubblico più vasto. L’accoglienza reticente, persino ostile, che è stata loro riservata lo indurrà, già in questo breve lasso di tempo, a fare evolvere la sua concezione. Otto anni dopo sarà pubblicata la sua famosa «Théorie physique : son objet, sa structure», in cui sono integrati molti di (...) questi testi. Offrendo per la prima volta l’edizione bilingue completa di questi sette articoli, il volume fornisce una migliore comprensione non solo dell’evoluzione del pensiero duhemiano, ma anche del contenuto del capolavoro di fama mondiale che ne sarebbe derivato. * * * Entre 1892 et 1896, le savant français Pierre Duhem fait paraître, dans la «Revue des questions scientifiques», sept articles qui, pour la première fois, font connaître sa conception de la science à un plus large public. L’accueil réticent, voire hostile, qui leur est réservé l’amènera, déjà au sein de ce court laps de temps, à faire évoluer sa conception. Huit ans plus tard paraîtra sa célèbre «Théorie physique : son objet, sa structure» dans laquelle plusieurs de ces textes se trouvent intégrés. En offrant pour la première fois l’édition bilingue intégrale de ces sept articles, ce volume permet donc de mieux comprendre non seulement l’évolution de la pensée duhémienne, mais encore le contenu du maître-ouvrage, mondialement connu, qui devait en résulter. (shrink)

In what is quite possibly the most famous passage of the De revolutionibus, Copernicus implies that nobody could ever place this supreme flaming torch that is the Sun in another or better place than that from which it can illuminate everything simultaneously, namely the centre of this extremely beautiful temple that is our world. Considering the fact that he leaves an interrogatory twist to this argument of convenience, and since he makes this statement without any justification as it seems entirely (...) evident to him, certain Copernicans choose to illustrate this by means of an analogy: if indeed the Sun must be positioned thus, it is because the most appropriate place for the torch intended to illuminate the room is at its centre, and not in one of its corners. Despite the heliosophy of the Renaissance having been shared by both geocentrists and Copernicans alike, this "torch" argument does not appear to have achieved much success: rarely adopted by the Copernican camp, it was even contested by some of them; as for the geocentrists, it held no appeal for them whatsoever. Did this argument of convenience therefore not benefit from the self-evidence attributed to it by Copernicus, and from, in his wake, it's continued support by a good many commentators? As is often the case when it comes to the history of thought, the pseudo-obviousness of this argument is merely the fruit of a blatant anachronism: presenting heliocentrism as the cosmological system that finally grants the Sun its worthy centrality by placing it in the centre of the room and not in a corner, is to ignore the fact that this star of the day already enjoyed, in geocentrism, a centrality esteemed to be perfectly in keeping with both its dignity and its inherent illuminative function. Having lost their grasp on this worldview that no longer belonged to them, the Copernicans thus put forward an argument which, for the geocentrists, is worthless. Yet they could have argued the objective superiority of their centrality over that accorded to the Sun by geocentrism: while the latter is only numerical, on a purely planetary scale, and frankly fictitious, the former is thoroughly spatial, of cosmic proportions and, at least on first approximation, very real. In order to produce arguments of convenience that could carry their own weight, the protagonists of the new cosmology would have benefited from getting to know the world vision of their adversaries a little better instead of addressing them from their own point of view; similarly, instead of treating as an obvious fact that which is only evident to one of the two parties present, historians of scientific thought would also be well advised to have a better understanding of the world vision of those who history now considers as the losers! (shrink)

Bien sûr, «la philosophie des sciences sans l’histoire des scien­ces est vide et l’histoire des sciences sans la philosophie des sciences est aveugle» (Lakatos), mais cette formule célèbre ne méconnaît-elle pas l’importance dissymétrique de cette relation de dépendance réci­proque ? En effet, ne pourrait-on pas soute­nir que les philoso­phes des sciences désireux d’arriver à une juste et saine philosophie des sciences ont besoin, pour ce faire, des travaux des historiens des sciences, bien plus que ces der­­niers n’ont besoin, pour leurs (...) recons­tructions historiques, des écrits des philosophes des sciences ? Telle est la thèse, quelque peu provocatrice, que l’auteur tente de défendre : un séminaire ne doit-il pas être un lieu de débat ? ––– Of course, «the philosophy of science is empty without the history of science and the history of science is blind without the philosophy of science» (Lakatos). But does not this famous formula fail to recognize the importance of the dyssymetry of this relationship of mutual dependence ? Could it not be main­tained that the philos­ophers of science, in their search for a correct and healthy philos­ophy of science, need the works of the historians of science far more than the latter need the works of the philosophers of science for their historical work ? This is the somewhat provocative thesis we shall attempt to defend : should not a seminar be a forum for debate ? (shrink)

Récemment savamment rééditée, la contribution qu’Alexandre Kojève offrit à Alexandre Koyré pour son septantième anniversaire s’attache à soutenir, de manière « beaucoup moins canularesque qu’elle ne paraît l’être à première vue », une affirmation que les «procédures historiennes» ne permettraient pas d’énoncer : si les Grecs n’ont pas développé la physique mathématique alors que les savants du XVIe siècle, au premier rang desquels Nicolas Copernic, ont réussi à la faire émerger, c’est parce que les premiers étaient païens alors que les (...) seconds étaient spécifiquement chrétiens ! Seuls ces derniers, grâce au dogme de l’Incarnation, ont en effet été aptes à réussir l’universalisation de l’approche mathématique du monde. N’hésitant pas à lire cette contribution tel qu’il s’avère qu’elle a été lue, c’est-à-dire indépendamment de l’œuvre kojévienne et de sa mise en œuvre d’une «histoire raisonnée», cet article analyse les deux principales sources d’inspiration de ladite thèse, à savoir Pierre Duhem et Alexandre Koyré ; retrace la réception historique de cette contribution ; relève toutes les objections qui, à cette occasion, lui furent adressées ; et, finalement, formule quelques objections supplémentaires. Les lecteurs qui souhaiteront bénéficier de la réédition de ce texte kojévien pour le moins provocateur devraient ainsi être à même de déterminer le degré de crédibilité qu’il convient de lui accorder. * * * Having recently been expertly republished, the contribution that Alexandre Kojève offered to Alexandre Koyré for his seventieth birthday served to support, in a manner that was in fact “much less playful than it initially appeared to be”, a claim that “historical procedures” had suppressed: if the Greeks failed to develop mathematical physics where the scholars of the 16th century, the foremost of whom being Nicolas Copernicus, succeeded, then it must be due to the fact that the former were pagans while the latter were specifically Christian! Only the latter, by virtue of the doctrine of Incarnation, were deemed capable of achieving the universalisation of the mathematical approach to the world. Focussed on interpreting this contribution as it was intended to be read, in other words independently of Kojève’s work and its implementation of a “rational history”, this article endeavours to: analyse the two main sources of inspiration for the aforementioned theory, namely Pierre Duhem and Alexandre Koyré; trace the historical reception of this contribution; highlight all of the objections that it was subject to at the time; and, lastly, formulate a few additional objections. Those readers wishing to make the most of the reissue of this rather provocative Kojèvian text should thus be in a position to determine the degree of credibility that it should be afforded. (shrink)

Introduction / St.L. JAKI (pp. 9-19). Présentation / J.-Fr. STOFFEL (p. 21). – L'œuvre de Pierre Duhem (pp. 25-113). Publications post­humes (pp. 115-129). – IIe partie : Les travaux de ses doc­torands. Fernand Caubet (pp. 133-135). Henry Chevallier (pp. 137-141). Émile Lenoble (pp. 143-144). Lucien Marchis (pp. 145-154). Eugène Monnet (pp. 155-156). Henri Pélabon (pp. 157-168). Paul Saurel (pp. 169-172). Albert Turpain (pp. 173-197). – IIIe partie : La litté­rature secondaire. Thèses et mé­moires (pp. 201-202). Livres (pp. 203-205). Biographies (...) et étu­des générales (pp. 207-209). Duhem en perspective (pp. 211-212). Le philosophe de la physique (pp. 213-234). L'histo­rien des théories physiques (pp. 235-243). Le physicien (pp. 245-251). Le croyant (pp. 253-256). Notices nécrologiques (pp. 257-258). Notices de dictionnaires et d'encyclopédies (pp. 259-260). – IVe partie : Index. (shrink)

Si la plupart des sept articles que Pierre Duhem fit paraître dans la «Revue des questions scientifiques» entre 1892 et 1896 ont déjà fait l’objet d’excellents commentaires spécifiques, il demeure assez difficile de percevoir ce qui pourrait rendre compte tout à la fois de leur enchaînement, de la grande diversité des thématiques dont ils témoignent, et des évolutions conceptuelles qui s’y manifestent. Constatant que ces articles suscitèrent des critiques aussi vives qu’inattendues, l’auteur du présent volume, destiné à accompagner leur lecture, (...) soutient que pour répondre à cette difficulté, il convient d’accorder davantage d’attention aux circonstances de leur rédaction et, plus particulièrement, à l’accueil qui leur fut réservé. S’attacher à le faire permet en outre de faire émerger la thématique principale dont il fut constamment question lors de ces débats : celle des rapports en physique et métaphysique. (shrink)

LEITE (Fábio Rodrigo) – STOFFEL (Jean-François), Introduction (pp. 3-6). BARRA (Eduardo Salles de O.) – SANTOS (Ricardo Batista dos), Duhem’s analysis of Newtonian method and the logical priority of physics over metaphysics (pp. 7-19). BORDONI (Stefano), The French roots of Duhem’s early historiography and epistemology (pp. 20-35). CHIAPPIN (José R. N.) – LARANJEIRAS (Cássio Costa), Duhem’s critical analysis of mecha­ni­cism and his defense of a formal conception of theoretical phy­sics (pp. 36-53). GUEGUEN (Marie) – PSILLOS (Stathis), Anti-­scepticism and epistemic (...) humility in Pierre Duhem’s philosophy of science (pp. 54-72). LISTON (Michael), Duhem : images of science, historical continuity, and the first crisis in physics (pp. 73-84). MAIOCCHI (Roberto), Duhem in pre-war Italian philos­ophy : the reasons of an absence (pp. 85-92). HERNÁNDEZ MÁRQUEZ (Víctor Manuel), Was Pierre Duhem an «esprit de finesse» ? (pp. 93-107). NEEDHAM (Paul), Was Duhem justified in not distinguishing between physical and chemical atomism ? (pp. 108-111). OLGUIN (Roberto Estrada), «Bon sens» and «noûs» (pp. 112-126). OLIVEIRA (Amelia J.), Duhem’s legacy for the change in the historiography of science : An analysis based on Kuhn’s writings (pp. 127-139). PRÍNCIPE (João), Poincaré and Duhem : Resonances in their first epistemological reflec­tions (pp. 140-156). MONDRAGON (Damián Islas), Book review of «Pierre Duhem : entre física y metafísica» (pp. 157-159). STOFFEL (Jean-François), Book review of P. Duhem : «La théorie physique : son objet, sa structure» / edit. by S. Roux (pp. 160-162). STOFFEL (Jean-François), Book review of St. Bordoni : «When historiography met epistemology» (pp. 163-165). (shrink)

This article proposes, firstly, a general study of the ideological positioning of the Société scientifique de Bruxelles during the first forty years of its existence by means of a detailed reconstruction of its programme, and, secondly, a specific account of its situation within the alternative represented by the Intransigent and Progressive Catholic camps. In order to achieve this objective, it favours the motto of the Société and the figure of its second Secretary, namely Paul Mansion, basing itself primarily on a (...) corpus of texts consisting of his annual reports and those of his predecessor, Father Carbonnelle. While taking particular care in identifying that which, following the Roman injunction in 1890, might have differentiated Mansion’s mandate from Carbonnelle’s, it offers to test the hypothesis that this difference lies, not only in a more favourable attitude towards neo-Thomism, but also in the transition from an intransigent apologetics to a more balanced apologetics. (shrink)

Selon l'interprétation traditionnelle de la révolution coperni­cienne, le géocentrisme est un anthropocentrisme et l'héliocen­trisme, un anthro­­popériphérisme. C'est cette double assimila­tion que cet article entend remettre en question. En effet, le géocentrisme peut être appréhendé comme un théocentrisme, un héliocentrisme, un diablo­centrisme et un anthropofinalisme, mais il n'en reste pas moins, indubitablement, un anthropopéri­phérisme. Le seul «anthropocentra­lisme» qui lui appartienne est un anthropoconceptualisme qui, hors de toute perspective valo­risante, n'est qu'une incapacité à se dé­centrer. Quant à l'hélio­centrisme proprement dit, s'il s'oppose (...) à l'anthropofinalisme des Anciens et à ce qu'il croit être leur anthropo­centralisme, il ne dégénère pas pour autant en un anthropo­péri­phérisme, car, d'une part, il est davantage préoccupé par la centration du So­leil que par la décentration de la Terre et, d'autre part, il par­vient même à s'accom­moder de perspectives franchement anthro­pocentriques. ––– According to the traditional interpretation of the Copernican revolution, the old geocentric system was anthropocentric and the new heliocentric system anthropoperipheric. The double assimilation is what this article wants to call into question. Although a geocentric system can be seen to be theocentric, a heliocentric system can be interpreted as being diabolocentric and anthropofinalist, but also undeniably anthropoperipheric. The only way a heliocentric system can be seen as anthropo­centric is as being anthropoconceptualist. Far from honouring man, this demonstrates an incapacity to see things from a point of view other than man's own. Although a heliocentric system is opposed to the ancient anthropofinality and what was seen as anthropocentrality, it is not necessarily anthropoperipheric. This is firstly because the new system was far more preoccupied with the new centrality of the sun than with the new position of the earth, and secondly because the new system managed to incorporate many aspects of anthropocentrality in her new vision. (shrink)

Selon l’interprétation traditionnelle, la révolution copernicienne, en arrachant l’homme de sa position centrale dans le cosmos, lui a infligé une profonde vexation. Si elle dit bien notre désarroi contemporain face à un univers devenu infini, cette inter­pré­tation ne reflète pas suffisamment la complexité historique du passage du géocentrisme à l’héliocentrisme. Aussi convient-il de la remettre en question. Mais pour ce faire, il faut d’abord bien la connaître. Aussi cet article étudie-t-il la phase de structu­ration de cette interprétation (1835-1925), dans le (...) contexte du positivisme, du darwinisme, du marxisme et enfin du freudisme. ––– Según la interpretación tradicional, la revolución copernicana, al sacar al hombre de su ubicación central en el cosmos, le propinó una profunda incomodidad. Esta interpretación corres­ponde a nuestra desazón actual provocada por un universo infinito pero desconoce la complejidad histórica implícita en el tránsito desde el geocentrismo al heliocentrismo. Por ello es necesario volver a plantear el problema, y para hacerlo hay que abordar correctamente el tema. De ahí que el presente artículo estudie el período de estructuración de esta interpretación (1835-1925) en los contextos del positivismo, del darwinismo, del marxismo y finalmente del freudismo. (shrink)

Destined to accompany the original French text edition of the English article devoted to the history of physics that Pierre Duhem published in 1911 in the Catholic Encyclopedia, this article proposes, firstly, to contextualize this written work by retracing the history of the various Duhemian notes that appeared in this encyclopedia, by addressing the various references to Duhem contained in the Catholic Encyclopedia’s volumes, and by briefly reiterating the main Duhemian publications in progress at the time this text was written. (...) Secondly, taking advantage of the first appearance within these notes of the word “revolution” being used to denote, on one hand, the groundwork for the basic principles of Aristotelian physics established between 1277 and 1377, and, on the other hand, Kepler’s contribution which put an end to the demands of Platonic circularity, this article also offers a terminological research of the use of this term within Duhem’s work. In doing so, it also provides some insight into the reception of Duhem’s ideas within Catholic circles (namely, an increased appreciation of its qualities), and it increases awareness as to the entirely unexpected saliency of the notion of “revolution” within the ongoing historical work of this author. (shrink)

S'étonnant qu'un simple physicien sache traiter des rapports de la physique et de la métaphysique, Edmond Domet de Vorges s'était demandé si Pierre Duhem n'avait pas bénéficié de l'aide de quelque théologien dans l'élaboration de son articulation de ces deux disci­plines. Faisant suite à cette question très perti­nente, cet article liste d'abord les intellectuels catholiques qui étaient en relation avec Duhem avant la publication, en 1893, de son article Physique et métaphysique et qui auraient effec­tivement pu l'aider à concevoir une (...) telle articulation. Se con­sacrant ensuite spécifiquement à l'un d'entre eux, à savoir Maurice Blondel, il étudie les similitudes et divergences existant entre les pensées du physicien bordelais et du philosophe d'Aix pour conclure que Blondel ne peut pas être celui qui aurait inspiré Duhem. À l'appui de cette conclusion, il fait notamment état d'une lettre inédite adressée par Duhem à Ambroise Gar­deil et dans laquelle celui-ci porte un jugement sévère à l'en­droit de son «pauvre ami» Blondel. ––– One might be surprised to find that a simple physician could be able explain with clarity the subtle relationship between physics and metaphysics. It is with this question in mind that Edmond Domet de Vorges asked himself if it might not have been with the aid of theologians that Pierre Duhem was able to find and express his subtle articulation between the two disciplines. Following in the footsteps of this pertinent question, this article begins by listing the catholic intellectuals who were acquain­tances of Pierre Duhem before the publication in 1893 of “Physique et métaphysique”, who may have been able to help him arrive at the relationship between the two sciences expressed in his publication. This line of questioning is followed by a specific study of one of these men, namely Maurice Blondel. The similarities and differences in the opinions of the physician from Bordeaux and the philosopher from Aix are explored with the resulting conclusion that Blondel could not have been he who inspired Duhem. This conclusion can be confirmed by a previously unpublished letter from Duhem to Ambroise Gardeil which contains a very severe judgement with regards to his “poor friend” Blondel. (shrink)

Le Père Ignace Carbonnelle, l'un des principaux fondateurs de la Société scientifique de Bruxelles en 1875 et son secrétaire général depuis cette époque, décède inopinément en 1889 après une quin­zaine d'années durant lesquelles il fut «l'homme fort» de ladite Société. Aussitôt, la Revue des questions scienti­fiques annonce la triste nouvelle, promettant, pour un prochain numéro, une étude détaillée de sa vie et de son œuvre. Elle ne paraîtra jamais, de sorte que sa mort ne fut pas saluée avec l'ampleur qu'on (...) était en droit d'attendre. Et pour cause ! Au ter­me d'une enquête digne d'un roman policier, cette étude révèle que Rome, agacée par l'atomisme de Carbonnelle, profita de sa mort pour rappeler à l'ordre la Société en l'invitant à marcher dans les pas de l'Aquinate. En réponse à cette pressante invi­tation et par un excès de zèle non requis, la Société élut comme président le célèbre thomiste français Edmond Domet de Vor­ges, cependant que le mathématicien Paul Mansion s'attacha d'établir, à partir des publications de Pierre Duhem prônant un retour à une physique des qualités, que la Société se conformait bien, mais à sa manière, aux injonctions romaines. ––– Fr. Ignace Carbonnelle, who founded the Brussels Scientific Society in 1875 and was from this date onwards her Secretary General, passed away suddenly in 1889, after fifteen years during which he was the leading figure of the aforementioned Society. “La Revue des Question scientifique” announced the sad news but promised that their next publication would include a detailed article on the great man and his works. Sadly this article never appeared, meaning that the passing of Fr. Carbonnelle was not marked with the importance which we might have otherwise expected. For what reason, you may well ask? After a detailed investigation, worthy of Agatha Christie herself, it would appear that Rome had been rather alarmed by the “atomism” present in Fr. Carbonnelle's reflections, and had taken the opportunity of his death to invite the Scientific Society to opinions more in line with those of St Thomas. In response to this firmly worded invitation, and with overzealous spontaneity, the Society elected the celebrated French Thomiste Edmond Domet de Vorges as their new President. At the same time the mathematician Paul Mansion relied on the publications of Pierre Duhem, which advocated a stronger adhesion to a physics of an object's qualities, to establish that the Society was, in fact, well aligned with the desires of Rome. (shrink)

The New French Edition of Pierre Duhem’s The Aim and Structure of the Physical Theory reviewed by Jean-François Stoffel.

L'Essai sur la notion de théorie physique de Pierre Duhem est contesté et rejeté à la fois par ceux qui y voient une interpré­­tation apologétique de l'affaire Galilée et par ceux qui refusent d'y perce­voir un plaidoyer historique en faveur du phénoména­­lisme duhé­mien. Les uns et les autres négligent donc cette mo­­nographie au sein de l'œuvre duhémienne. Sans nier la portée apologétique de cet ouvrage, cet article entend démontrer qu'avec cet Essai, Duhem a surtout voulu établir, au niveau histo­rique, la (...) validité de sa position phénoménaliste dont la justesse philosophique avait déjà été démon­trée, selon lui, dans La théorie physique et ce avant même que toute l'argumen­tation historique de cette thèse ne soit ultérieurement déve­lop­­pée dans Le système du monde. Il apparaît alors que cet Essai s'intègre parfaitement, en amont comme en aval, dans l'inté­­gralité de l'œuvre duhémienne. ––– The Essai sur la notion de théorie physique by Pierre Duhem has been contested and rejected both by those who see it as an apologetic for the Galileo affair, but also by those who refuse to see in this essay an historical argument in favour of Duhem's phenomenology. However it would appear that both groups of critics have not taken sufficient notice of this monograph in Duhem's works. Without wanting to underestimate the apolo­getic intention of Duhem's assay, this article argues that the author desired to establish historically the validity of a pheno­menalist position. This is a position which the author considered to have been already philosophically established in La Théorie physique. These are the same historical arguments which were later to be developed in Le système du monde. It would appear that the Essai can be integrated seamlessly into the entire corpus of Duhem's work, developing previous arguments and establishing themes which were developed in later works. (shrink)

According to our interpretation, Σῴζειν τὰ φαινóμενα : Essai sur la notion de théorie physique pursues two intricately intertwined objectives. Primarily, it aims to establish the historical significance of Duhemian phenomenalism — the accuracy of which had previously been established in La Théorie Physique : son Objet et sa Structure — firstly, by positioning it within a millenary tradition and, secondly, by examining the conse­quences, both positive and negative, that subsequently arose from the various ways of comprehending the idea of (...) physical theory. Secondarily, it proffers a novel interpretation of the rationale behind the Galileo affair, from a point of view which is both philosophical (that of the Duhemian epistemology as it had already been developed in The Aim and Structure of Physical Theory) and historical (that of the lessons resulting from historical considerations in To Save the Phenomena). This article is dedicated to establishing the existence of the first goal by examining, firstly, whether or not it had actually been sought out by Duhem himself, and, secondly, whether or not he believed he had achieved it. (shrink)

ROUDAUT (François) & STOFFEL (Jean-François), Avant-propos (pp. 371-372). BLAY (Michel), Soleil de Copernic et soleil de Galilée (pp. 373-389). MEHL (Édouard), Le Soleil au cinquième concile du Latran (1512-1516) : Copernic et la réforme du calendrier julien (pp. 391-408). STOFFEL (Jean-François), «Qui choisirait de poser ce flambeau dans un lieu autre ou meilleur que celui d’où il peut illuminer le tout simultanément ?»: examen de la pertinence d’un argument copernicien de convenance (pp. 409-458). ROUDAUT (François), Le Soleil chez (...) quelques lexicographes et vulgarisateurs (pp. 459-485). CÉARD (Jean), Le Soleil selon les physiciens de la Renaissance (pp. 487-498). MÉNAGER (Daniel), Le soleil dans les fêtes de cour sous les derniers Valois (pp. 499-510). SEIDENGART (Jean), La parenté du Soleil et des étoiles fixes dans la cosmologie de Giordano Bruno (pp. 511-529). ŠPELDA (Daniel), Les soleils et leurs observateurs au XVIIe siècle (pp. 531-577). MELLINGHOFF-BOURGERIE (Viviane), Connivences héliologiques entre théologie et astronomie chez François de Sales et Bérulle: le cas du barnabite Redento Baranzano (pp. 579-610). NEJESCHLEBA (Tomáš), De la métaphysique de la lumière à l’héliocentrisme: la vision du Soleil selon Valérien Magni (pp. 611-627). Les auteurs (pp. 629-630). (shrink)

Anne TIHON, Théorie et réalité : l’exemple de l’astronomie an­cienne (pp. 7-23) ; Isabelle DRAELANTS, Les encyclopédies com­me sommes des connaissances, d’Isidore de Séville au XIIIe siè­cle, avec les fondements antiques (pp. 25-50) ; Andrée COLINET, Alchimie antique et médiévale avant 1300 : mystères et réalités (pp. 51-70) ; Baudouin VAN DEN ABEELE, Quelques pas de grue à travers l’histoire naturelle médiévale : un regard diversifié sur le réel (pp. 71-98) ; Régine LEURQUIN, L’astrolabe plan (pp. 99- 117) ; Patricia (...) RADELET-DE GRAVE, Copernic, Stevin, Galilée et la réalité des orbites célestes (pp. 119-151) ; Brigitte VAN TIGGELEN, Étiqueter ou définir : le réalisme dans la nomen­cla­ture chimique aux XVIIe et XVIIIe siècles (pp. 153-183) ; Michel GHINS, L’existence de l’espace et du temps selon Leon­hard Euler (pp. 185-193) ; Chantal TILMANS-CABIAUX, Le rap­port de l’idée théorique à l’expérimentation chez Hahnemann : le système homéo­pathique naissant et le réalisme (pp. 195-214) ; Jean MAWHIN, La Terre tourne-t-elle ? À propos de la philosophie scientifique de Poincaré (pp. 215-252) ; Michel WILLEM, Paul Lévy et les fondements du calcul des probabilités (pp. 253-263). (shrink)

Compared to the existing bibliographies devoted to Paul Mansion, this list of his written and spoken words increases the number of items pertaining to the Annales de la Société scientifique de Bruxelles from 123 to 208, and from 32 to 142 for those pertaining to the Revue des questions scientifiques, thus representing an increase of 40% and 77%, respectively. Based directly on an analysis of these two journals themselves, it makes the relevant bibliographical information — contained both in these earlier (...) bibliographies and in the analytical indexes devoted to these journals — accessible to researchers in a more accurate, convenient and comprehensive manner. (shrink)

Where three teacher-researchers discuss bipedal walking in humans and where the long-term dynamics of this phenomenon are interpreted in terms of complexity and predictability, two concepts that can be quantified using fractals and the mathematical tools to study them.

This book explores a question central to philosophy--namely, what does it take for a belief to be justified or rational? According to a widespread view, whether one has justification for believing a proposition is determined by how probable that proposition is, given one's evidence. In this book this view is rejected and replaced with another: in order for one to have justification for believing a proposition, one's evidence must normically support it--roughly, one's evidence must make the falsity of that proposition (...) abnormal in the sense of calling for special, independent explanation. This conception of justification bears upon a range of topics in epistemology and beyond. Ultimately, this way of looking at justification guides us to a new, unfamiliar picture of how we should respond to our evidence and manage our own fallibility. This picture is developed here. (shrink)

Michel-Pierre Lerner, Le monde des sphères. Tome 1: Genèse et triomphe d'une représentation cosmique ; Michel-Pierre Lerner Le monde des sphères. Tome 2: La fin du cosmos classique.

About: P. DUHEM, “Some reflections on the subject of physical theories” P. DUHEM, “Atomic notation and atomistic hypotheses” P. DUHEM, “A new theory of the inorganic world” P. DUHEM, “Physics and metaphysics” P. DUHEM, “The English school and physical theories” P. DUHEM, “Some reflections on the subject of experimental physics” P. DUHEM, “The evolution of physical theories from the 17th century up to the present day”.

Review of Bordoni, Stefano. When historiography met epistemology: Sophisticated histories and philosophies of science in French-speaking countries in the second half of the nineteenth century. Reviewed by Jean-François Stoffel.

Selon l’interprétation traditionnelle, la révolution copernicienne, qui opère le passage du géocentrisme à l’héliocentrisme, aurait détrôné et dévalorisé l’homme, en lui retirant sa position cen­trale, et donc privilégiée, dans le cosmos, pour le reléguer sur une planète devenue analogue aux autres et occupant une place quelconque à l’intérieur du système solaire. Cette inter­prétation ne pèche pas seulement dans sa compréhension de l’héliocentrisme copernicien, mais également dans sa percep­tion du géocentrisme aristotélico-médiéval. Il faut donc dénon­cer sa fausseté générale et, plus encore, (...) lui substituer un autre schéma interprétatif qui, peut-être moins évocateur de notre rapport au monde, soit plus respectueux de la vérité historique. ––– According to the traditional interpretation, the Copernican revo­lution, which brought about the transfer from geocentrism to heliocentrism, is said to have dethroned and devalued man by removing his central and hence privileged position in the cos­mos and by relegating him to a planet now seen as analogous to others occupying an insignificant position within the solar system. This interpretation fails not only in its understanding of Copernican heliocentrism, but also in its percep­tion of Aristo­telian mediaeval geocentrism. It is necessary, therefore, not only to denounce its general falsity, but also to substitute for it a different interpretative scheme which, although it may empha­size less our link with the world, may be more respectful of historical truth. (shrink)

According to the Copernican myth, geocentrism was a form of anthropocentrism because it showcased humankind as being both the centre and the purpose of the Cosmos, whereas heliocentrism, in dethroning humankind from this privileged position, luckily provided a means to quash this point of view, which was illusory and vain, and that even went against scientific progress. According to the anthropocentric myth, which is a part of it, geocentrism is a form of anthropocentrism, while heliocentrism is really an anti-anthropocentrism and (...) not simply a non-anthropocentrism. This article, in the form of a dialogue, questions these two myths, looking in particular for the causes of their appearance, among which is a guilty anachronism. (shrink)

French text publication of the manuscript of the English article en-titled "Physics, History of" and published by Duhem in Volume 12 of the 1911 "Catholic Encyclopedia".

In The Varieties of Reference, Gareth Evans describes the acquisition of beliefs about one’s beliefs in the following way: ‘I get myself in a position to answer the question whether I believe that p by putting into operation whatever procedure I have for answering the question whether p.’ In this paper I argue that Evans’s remark can be used to explain first person authority if it is supplemented with the following consideration: Holding on to the content of a belief and (...) ‘prefixing’ it with ‘I believe that’ is as easy as it is to hold on to the contents of one’s thoughts when making an inference. We do not, usually, have the problem, in going, for example, from ‘p’ and ‘q’ to ‘p and q’, that one of our thought contents gets corrupted. Self-ascription of belief by way of Evans’s procedure is based on the same capacity to retain and re-deploy thought contents and therefore should enjoy a similar degree of authority. However, is Evans’s description exhaustive of all authoritative self-ascription of belief? Christopher Peacocke has suggested that in addition to Evans’s procedure there are two more relevant ways of self-ascribing belief. I argue that both methods can be subsumed under Evans’s procedure. (shrink)

In this paper I draw attention to a peculiar epistemic feature exhibited by certain deductively valid inferences. Certain deductively valid inferences are unable to enhance the reliability of one's belief that the conclusion is true—in a sense that will be fully explained. As I shall show, this feature is demonstrably present in certain philosophically significant inferences—such as GE Moore's notorious 'proof' of the existence of the external world. I suggest that this peculiar epistemic feature might be correlated with the much (...) discussed phenomenon that Crispin Wright and Martin Davies have called 'transmission failure'—the apparent failure, on the part of some deductively valid inferences to transmit one's justification for believing the premises. (shrink)

This chapter focusses on Martin Lang's ongoing practiced-based research project "The Truth in Painting 1993", which employs painting, photography and digital manipulation brought together in pictures that depict events from 1993. Each painting in the series contains an amalgamation of analogue painterly marks, printed scans of paintings and digital painting. The projects anticipates that both the lack of certainty around the mediums used, and the occasions depicted in the works, will spur viewers to question notions of socially constructed and (...) mind-independent truths connected to incidents of that time. In this essay, Lang frames his work in relation to ideas of slippage of the work of art as a single, unique, entity in Jacques Derrida's The Truth in Painting (1978) and Enrico Terrone's concept of "standards of correctness" in "The Post-truth in Painting" (2019). This positions Lang's project in a post-truth world, where the "truth is out there", but which cannot always be clearly defined and understood. (shrink)

There is something puzzling about statistical evidence. One place this manifests is in the law, where courts are reluctant to base affirmative verdicts on evidence that is purely statistical, in spite of the fact that it is perfectly capable of meeting the standards of proof enshrined in legal doctrine. After surveying some proposed explanations for this, I shall outline a new approach – one that makes use of a notion of normalcy that is distinct from the idea of statistical frequency. (...) The puzzle is not, however, merely a legal one. Our unwillingness to base beliefs on statistical evidence is by no means limited to the courtroom, and is at odds with almost every general principle that epistemologists have proposed as to how we ought to manage our beliefs. (shrink)