If what is morally right or wrong were ultimately a function of our opinions, then even such reprehensible actions as genocide and slavery would be morally right, had we approved of them. Many moral philosophers find this conclusion objectionably permissive, and to avoid it they posit a moral reality that exists independently of what anyone thinks. The notion of an independent moral reality has been subjected to meticulous metaphysical, epistemological and semantic criticism, but it is hardly ever examined from a (...) moral point of view. In this essay I offer such a critique. I argue that the appeal to an independent moral reality as a ground for moral obligations constitutes a substantive moral mistake. However, I do not conclude from this that we must therefore embrace the opposite view that moral truths are ultimately dependent on our attitudes. Rather, I suggest that we reject both of these views and answer the classic meta-ethical question “Is what we morally ought to do ultimately a function of our actual attitudes, or determined independently of them?” with Neither. (shrink)

Leibniz's dispute with Newton over the physico-mathematical theories expounded in the Principia Mathematica have long been identified as a crucial episode in the history of science. Dr. Bertoloni Meli examines several hitherto unpublished manuscripts in Leibniz's own hand illustrating his first reading of and reaction to Newton's Principia. Six of the most important manuscripts are here edited for the first time. Contrary to Leibniz's own claims, this new evidence shows that he had studied Newton's masterpiece before publishing An Essay (...) on the Causes of Celestial Motions. This article, representing his response to Newton, is included here in English translation. Dr. Bertoloni Meli analyses the important implications of this episode on a variety of themes ranging from priority claims to the mathematization of nature in the seventeenth century. Besides providing a careful study of Leibniz's style and strategy, the author examines how our perception of Newton's achievement is affected and the reception of the rival theories by the mathematical community around 1700. "Bertoloni's book provides a very detailed and deep analysis of Leibniz's calculus and dynamics by focusing on a consistent and important set of previously unknown manuscripts..." Niccolo Guicciardini, Universita de Bologna "...Equivalence and Priority is a major contribution to our understanding of the development of mathematical physics in the late seventeenth and early eighteenth century." Daniel Garber, University of Chigago. (shrink)

This research responds to urgent calls to fill knowledge gaps on COVID-19 in communicating social distancing messages to the public in the most convincing ways. The authors explore the effectiveness of framing social distancing messages around prosocial vs. self-interested appeals in driving message compliance and helping behavior. The results show that when a message emphasizes benefits for everyone in society, rather than solely for the individual, citizens find the message more persuasive to engage in social distancing, and also more motivating (...) to help others. The results further demonstrate that the proposed effects are higher for individuals who have a lower locus of control and lower fear of coronavirus as prosocial messages lead them to feel a joint responsibility in protecting from the pandemic. Theoretical and practical implications of the results are discussed. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Caroline, Leibniz, and ClarkeD. Bertoloni Meli*The papers which passed between Leibniz and Clarke from 1715 to 1716 have long been considered classics in the history of science and philosophy, attracting a large number of scholarly works. Their exchanges, consisting of ten letters, five by Leibniz and five by Clarke, ended with Leibniz’s death in November 1716. 1 The letters deal with issues such as God’s role in the (...) universe, the notion of miracles, the cause of gravity, and space and time. The difficulties in interpreting the texts induced most, if not all, editors to present Leibniz’s and Clarke’s papers together with other writings to provide a context for the dispute and to elucidate the most obscure passages. This tradition was inaugurated by Samuel Clarke himself, who included in his editio princeps a number of explanatory footnotes, an appendix with passages from Leibniz’s printed works, and additional epistolary exchanges between himself and others on liberty and necessity, all with appropriate cross-references. 2 Later editors made a different selection of explanatory material, emphasizing different contexts and aspects of the dispute.The context I have selected for this essay centers on Caroline of Ansbach, Princess of Wales, her life and contacts with Leibniz prior to her departure for London, and their correspondence before and during the dispute with Clarke. [End Page 469] Portions of this correspondence can be found in the editions by H.G. Alexander and André Robinet, but the letters on which I shall spend more time are curiously excluded. They can be found among Leibniz’s political and state papers edited at the end of last century by Onno Klopp, and only in part in those edited by John M. Kemble, and in the recent German edition by Volmar Schüller. 3 The reader unaware of Caroline’s life and intellectual horizon may well wonder why Leibniz and Clarke went on relentlessly, month after month, debating in letters addressed to her whether space is the sensorium of God, dissecting the notion of miracle, and arguing about God’s role in the world. I hope to show that there are several reasons for paying attention to Caroline. The text which has become known as “Leibniz’s first paper” was in fact an extract of a letter to Caroline, not intended for Clarke, belonging to an important exchange with the Princess of Wales. Caroline engaged in a dispute with Clarke, passed the extract of Leibniz’s letter to him, and sent Clarke’s reply to Leibniz together with a request for help. Thus Leibniz’s “first paper” ought to be seen as part of his correspondence with Caroline. Later papers between Leibniz and Clarke went through Caroline.The Princess of Wales was not just a convenient address for the correspondence; nor was she a spectator uninterested in such an intellectual confrontation. She was involved in the dispute by arguing with Clarke and even with Newton, exchanging opinions with Leibniz, and functioning as an arbiter and moderator. Her presence helped shape the style and contents of the letters, and characterizes the genre to which the correspondence belongs. This is a complex issue because of the composite nature of the exchanges: on the one hand we have Leibniz’s letters to both Caroline and Clarke, on the other we have Caroline’s and Clarke’s letters to Leibniz, and Clarke’s discussions with Caroline. Clearly the standard label “Leibniz-Clarke correspondence” does not capture all levels of the exchanges. Moreover, in order to appreciate Caroline’s status in London it is worth recalling that the wife of George I, Sophie Dorothea, remained in Germany, secluded in the Castle of Ahlden. 4 Without a Queen, the Princess of Wales was the highest female royal. As an example of her influence, it was widely believed at the time that the election of William Wake as Archbishop of Canterbury in December 1715 was due to his close contacts with Caroline. At the time of the dispute Wake, who was a close friend of Clarke, neglected his pastoral duties as Bishop of Lincoln in order to be close to Caroline, with whom he held daily meetings. Thus Caroline was an... (shrink)

Taking the inspiration from some points made by Scott Sturgeon and Albert Casullo, I articulate a view according to which an important difference between undermining and overriding defeaters is that the former require the subject to engage in some higher-order epistemic thinking, while the latter don’t. With the help of some examples, I argue that underminers push the cognizer to reflect on the way she formed a belief by challenging the epistemic worthiness of either the source of justification or the (...) specific justificatory process. By contrast, overriders needn’t pose any such challenge. I also consider some problems for the proposed view, and I put forward some possible solutions. Finally, I provide some details on how undermining defeat works in different cases. (shrink)

Der vorliegende Beitrag setzt die Überlegungen eines Forschungsentwurfs fort, dessen erster Teil im Band 63/2 dieser Zeitschrift erschien. Die historische Formel des sog. ›Disjunktionsprinzps‹ entwickelt Panofsky u.a. in dem 1944 im Kenyon Review erschienenen Artikel Renaissance and Renascences. Die grundsätzliche Mobilität antiker Kulturelemente, die er seiner Formel zuschreibt, impliziert einen bei ihm bisher unbenannten kulturtheoretischen Zugang mit deutlicher Nähe zum ethnologischen Modell der Diffusion. Ausgehend davon entwirft Panofsky mittels einer kulturmorphologischen Vorgehensweise ein transepochales Modell kultureller Tradierung. Dies ermöglicht es ihm, (...) seine Vorstellung einer hierarchischen Gliederung menschlicher (Kultur‑)Epochen am Beispiel der Antikenrezeption zu festigen. Um sich den kulturtheoretischen Implikationen in Panofskys Ausführungen zu nähern, sollen hier jene Stationen beleuchtet werden, die Panofskys intellektuellen Horizont möglicherweise mitgeformt haben – so z.B. die Prägung durch Aby Warburg, der seine Ausbildung in Bonn u.a. unter der Lehre Karl Lamprechts absolvierte. Zum anderen wird Panofskys Argumentation mit den Ideen deutscher Diffusionisten verglichen. Die vergleichende Methode offenbart nicht nur erstmalig deutliche Analogien, sondern zeigt, wie Panofsky mittels Antikenrezeption eine spezifische Vorstellung von der menschlichen Kulturgeschichte vorgibt. The article continues the considerations of a research draft, the first part of which was published in volume 63/2 of this journal. Panofsky develops the historical formula of the socalled ›principle of disjunction‹ in the article ›Renaissance and Renascences‹ published in the Kenyon Review in 1944. The fundamental mobility of ancient cultural elements, which he ascribes to his formula, implies a previously unnamed cultural-theoretical approach with a clear proximity to the ethnological model of diffusion. On this basis, Panofsky uses a cultural morphological approach to design a transepochal model of cultural transmission. This enables him to consolidate the idea of a hierarchical structure of human (cultural) epochs using the example of the reception of antiquity. In order to approach the cultural-theoretical implications in Panofsky’s remarks, those stations that may have shaped Panofsky’s intellectual horizon will be examined – e.g. the influence of Aby Warburg, who completed his education in Bonn under the teachings of Karl Lamprecht, among others. On the other hand, Panofsky’s argumentation is compared with the ideas of German diffusionists. The comparative method not only reveals clear analogies for the first time, but also shows how Panofsky uses the reception of antiquity to provide a specific idea of human cultural history. (shrink)

One important distinction in the debate over the nature of epistemic justification is the one between propositional and doxastic justification. Roughly, while doxastic justification is a property of beliefs, propositional justification is a property of propositions. On a rather common view, which accounts for doxastic justification in terms of propositional justification plus the so-called ‘basing relation’, propositional justification is seen as the prior notion, and doxastic justification is explained in terms of it. According to the opposing view, the direction of (...) explanation needs to be reversed, and doxastic justification should be seen as primary. I distinguish between two notions of priority, and I argue that they give different verdicts with respect to the issue of which notion of justification comes first. The lesson may be taken to be that propositional and doxastic justification are in a relation of intertwinement. (shrink)

I extend the Higher-Order View of Undermining Defeat (HOVUD) defended in Melis (2014) to account for the defeat of propositional justification. In doing so, I clarify the important notion of higher-order commitment, and I make some considerations concerning the defeat of externalist epistemic warrants.

Eye gaze is a ubiquitous cue in child–caregiver interactions, and infants are highly attentive to eye gaze from very early on. However, the question of why infants show gaze-sensitive behavior, and what role this sensitivity to gaze plays in their language development, is not yet well-understood. To gain a better understanding of the role of eye gaze in infants' language learning, we conducted a broad systematic review of the developmental literature for all studies that investigate the role of eye gaze (...) in infants' language development. Across 77 peer-reviewed articles containing data from typically developing human infants in the domain of language development, we identified two broad themes. The first tracked the effect of eye gaze on four developmental domains: vocabulary development, word–object mapping, object processing, and speech processing. Overall, there is considerable evidence that infants learn more about objects and are more likely to form word–object mappings in the presence of eye gaze cues, both of which are necessary for learning words. In addition, there is good evidence for longitudinal relationships between infants' gaze following abilities and later receptive and expressive vocabulary. However, many domains are understudied; further work is needed to decide whether gaze effects are specific to tasks, such as word–object mapping or whether they reflect a general learning enhancement mechanism. The second theme explored the reasons why eye gaze might be facilitative for learning, addressing the question of whether eye gaze is treated by infants as a specialized socio-cognitive cue. We concluded that the balance of evidence supports the idea that eye gaze facilitates infants' learning by enhancing their arousal, memory, and attentional capacities to a greater extent than other low-level attentional cues. However, as yet, there are too few studies that directly compare the effect of eye gaze cues and non-social, attentional cues for strong conclusions to be drawn. We also suggest that there might be a developmental effect, with eye gaze, over the course of the first 2 years of life, developing into a truly ostensive cue that enhances language learning across the board. (shrink)

If what we want from moral inquiry were the obtainment of objective moral truths, as moral realism claims it is, then there would be nothing morally unsatisfactory or lacking in a situation, in which we somehow had access to all moral truths, and were fundamentally finished with morality. In fact, that seems to be the realists’ conception of moral heaven. In this essay, however, I argue that some sort of moral wakefulness – that is, always paying attention to the subtleties (...) of life and people, and never taking for granted what their moral significance can possibly be – is an essential moral value, and, therefore, moral realism, which promotes a moral ideal that allows such moral lethargy and inattentiveness is morally objectionable. (shrink)

Numerical tables are important objects of study in a range of fields, yet they have been largely ignored by historians of science. This paper contrasts and compares ways in which numerical tables were used by Galileo and Mersenne, especially in the Dialogo and Harmonie Universelle. I argue that Galileo and Mersenne used tables in radically different ways, though rarely to present experimental data. Galileo relied on tables in his work on error theory in day three of the Dialogo and also (...) used them in a very different setting in the last day of the Discorsi. In Mersenne's case they represent an important but so far unrecognized feature of his notion of universal harmony. I conclude by presenting a classification of different ways in which tables were used within the well-defined disciplinary and temporal boundaries of my research. In doing so, however, I provide a useful tool for extending similar investigations to broader domains. (shrink)

In a recent article, Hayakawa and Keysar (2018) propose that mental imagery is less vivid when evoked in a foreign than in a native language. The authors argue that reduced mental imagery could even account for moral foreign language effects, whereby moral choices become more utilitarian when made in a foreign language. Here we demonstrate that Hayakawa and Keysar's (2018) key results are better explained by reduced language comprehension in a foreign language than by less vivid imagery. We argue that (...) the paradigm used in Hayakawa and Keysar (2018) does not provide a satisfactory test of reduced imagery and we discuss an alternative paradigm based on recent experimental developments. (shrink)

Dans cet ouvrage de 200 pages et de 7 chapitres très conséquents, Carine Guérandel analyse les effets des politiques d’insertion par le sport sur les rapports sociaux de sexe des jeunes de milieux populaires. Centré sur une monographie de quartier d’une grande métropole française, elle interroge le rôle des dispositifs sportifs dans la production/reproduction des inégalités sexuées et de classes dans le domaine sportif. Dans le premier chapitre intitulé « Les politiques d’intégration par le...

Starting from the works by Aselli on the milky veins and Harvey on the motion of the heart and the circulation of the blood, the practice of vivisection witnessed a resurgence in the early modern period. I discuss some of the most notable cases in the century spanning from Aselli’s work to the investigations of fluid pressure in plants and animals by Stephen Hales. Key figures in my study include Johannes Walaeus, Jean Pecquet, Marcello Malpighi, Reinier de Graaf, Richard Lower, (...) Anton Nuck, and Anton de Heide. Although vivisection dates from antiquity, early modern experimenters expanded the range of practices and epistemic motivations associated with it, displaying considerable technical skills and methodological awareness about the problems associated with the animals being alive and the issue of generalizing results to humans. Many practitioners expressed great discomfort at the suffering of the animals; however, many remained convinced that their investigations were not only indispensable from an epistemic standpoint but also had potential medical applications. Early modern vivisection experiments were both extensive and sophisticated and cannot be ignored in the literature of early modern experimentation or of experimentation on living organisms across time. (shrink)

Neither laziness nor its condemnation are new inventions, however, perceiving laziness as a social condition that afflicts a 'nation' is. In the early modern era, Ottoman political treatises did not regard the people as the source of the state's problems. Yet in the nineteenth century, as the imperial ideology of Ottomanism and modern discourses of citizenship spread, so did the understanding of laziness as a social disease that the 'Ottoman nation' needed to eradicate. Asking what we can learn about Ottoman (...) history over the long nineteenth-century by looking closely into the contested and shifting boundaries of the laziness - productivity binary, Melis Hafez explores how 'laziness' can be used to understand emerging civic culture and its exclusionary practices in the Ottoman Empire. A polyphonic involvement of moralists, intellectuals, polemicists, novelists, bureaucrats, and, to an extent, the public reveals the complexities and ambiguities of this multifaceted cultural transformation. Using a wide variety of sources, this book explores the sustained anxiety about productivity that generated numerous reforms as well as new understandings of morality, subjectivity, citizenship, and nationhood among the Ottomans. (shrink)

Syntactic templates serve as schemas, allowing speakers to describe complex events in a systematic fashion. Motion events have long served as a prime example of how different languages favor different syntactic frames, in turn biasing their speakers toward different event conceptualizations. However, there is also variability in how motion events are syntactically framed within languages. Here, we measure the consistency in event encoding in two languages, Spanish and Swedish. We test a dominant account in the literature, namely that variability within (...) a language can be explained by specific properties of the events. This event-properties account predicts that descriptions of one and the same event should be consistent within a language, even in languages where there is overall variability in the use of syntactic frames. Spanish and Swedish speakers (N= 84) described 32 caused motion events. While the most frequent syntactic framing in each language was as expected based on typology (Spanish: verb-framed, Swedish: satellite-framed, cf. Talmy,2000), Swedish descriptions were substantially more consistent than Spanish descriptions. Swedish speakers almost invariably encoded all events with a single syntactic frame and systematically conveyed manner of motion. Spanish descriptions, in contrast, varied much more regarding syntactic framing and expression of manner. Crucially, variability in Spanish descriptions was not mainly a function of differences between events, as predicted by the event-properties account. Rather, Spanish variability in syntactic framing was driven by speaker biases. A similar picture arose for whether Spanish descriptions expressed manner information or not: Even after accounting for the effect of syntactic choice, a large portion of the variance in Spanish manner encoding remained attributable to differences among speakers. The results show that consistency in motion event encoding starkly differs across languages: Some languages (like Swedish) bias their speakers toward a particular linguistic event schema much more than others (like Spanish). Implications of these findings are discussed with respect to the typology of event framing, theories on the relationship between language and thought, and speech planning. In addition, the tools employed here to quantify variability can be applied to other domains of language. (shrink)

Summary The investigation and representation of insects in the seventeenth century posed huge problems: on the one hand, their size and texture required optical tools and fixation techniques to disentangle and identify their tiny parts; on the other, the esoteric nature of those parts required readers to make sense of images alien to their daily experiences. Naturalists and anatomists developed sophisticated techniques of investigation and representation, involving tacit and unusual conventions that even twentieth-century readers found at times baffling. This essay (...) develops a comparative approach based on seven pairs of investigations involving Francesco Stelluti, Francesco Redi, Giovanni Battista Hodierna, Robert Hooke, Marcello Malpighi, and Jan Swammerdam. Seen together, they document an extraordinary time in the study of insects and reconstruct a number of iconographic dialogues shedding light on the conventions and styles adopted. (shrink)

Multiple authorship is so common and pervasive in our world that it is tempting to take it for granted. Prior to the twentieth century, however, multiple authorship was exceedingly rare.

The present paper contains a full transcription, with commentary and introduction, of two hitherto unknown manuscripts by Leibniz on Newton's Principia mathematica. Both manuscripts were probably written in Rome in 1689. Leibniz's interest focused in particular on Newton's concept of vanishing quantities and last ratios, on the notion of force and on the cause of gravity. An edition of further unknown manuscripts by Leibniz on the Principia and on planetary motion is in progress and will appear in the sequel.

This essay explores the collections of Observationes, whether medicae or chirurgicae, published in Amsterdam from about 1640 to about 1690, or from Nicolaas Tulp to Frederik Ruysch. Since many Observationes were illustrated, I pay special attention to the role of images, with special emphasis on those representing diseased states. The works by Gerardus Blasius appear especially informative about contemporary practices including clinical teaching, physical examinations, postmortems, collecting, and visual representation.

In Italy a specific legislation on administrative management has been belated and its rhetoric showed to be in contradiction with its practical translation. The relationship between management and politics has been characterized either by an excessive distance or by a pathological proximity or else by indifference towards the ends of the policies that the management should have interpreted. The senior civil service has thus self-excluded from the national elites and it has never really mobilized in the decisional spheres of the (...) country. The essay analyzes, through four periodizing dates, the transformations of the senior civil service and its relationship with the political power in the 150 years of history since the unity of Italy. (shrink)

Moving from Paris, Pisa, and Oxford to London, Amsterdam, and Cambridge, this essay documents extensive collaborations between anatomists and mathematicians. At a time when no standard way to acknowledge collaboration existed, it is remarkable that in all the cases I discuss anatomists expressed in print their debt to mathematicians. The cases I analyze document an extraordinarily fertile period in the history of anatomy and science and call into question historiographic divisions among historians of science and medicine. I focus on Steno's (...) Myology, showing how his collaboration with mathematician Viviani led to a geometrical treatment of muscular contraction and to an epistemology inspired by Galileo. The collaboration between Steno and Viviani enables us to interpret a major text in the history of anatomy, one whose implications had so far eluded historians. (shrink)

While growing empirical evidence suggests a continuity between human and non-human psychology, many philosophers still think that only humans can act and form beliefs rationally. In this paper, we challenge this claim. We first clarify the notion of rationality. We then focus on the rationality of beliefs and argue that, in the relevant sense, humans are not the only rational animals. We do so by first distinguishing between unreflective and reflective responsiveness to epistemic reasons in belief formation and revision. We (...) argue that unreflective responsiveness is clearly within the reach of many animals. We then defend that a key demonstration of reflective responsiveness would be the ability to respond to undermining defeaters. We end by presenting some empirical evidence that suggests that some animal species are capable of processing these defeaters, which would entail that even by the strictest standards, humans are not the only rational animals. (shrink)

If, as I propose, Hecuba represents fate and Medea contingency, taken together they constitute as well as reveal the tragic within the tension between the ontological and empirical status of man as it is embodied in the clash between necessity and freedom. Viewing this tension within the perspective of the unconditional status of the love of the mother, I will show how both narratives belong to the realm of possibilities and cause, what Ricoeur calls “suffering for the sake of understanding”. (...) I will argue that the phenomenon of the unconditional love of the mother is in itself tragic and open to both the appearance of both Medea and Hecuba. (shrink)

Diesen Ausführungen liegt eine Auswahl von Leibniz' Briefen und Aufsätzen zugrunde‚ die sein Interesse an der Aufhebung der Zensur des kopernikanischen Systems bekunden. Die hier gesammelten Dokumente stammen aus den Jahren 1684 bis 1705 und enthalten Auszüge aus der Korrespondenz mit dem Landgrafen Ernst von Hessen-Rheinfels sowie Briefe und Memoranda von der italienischen Reise und Passagen aus dem Specimen Dynamicum und den Nouveaux Esseais. Im besonderen wird gezeigt, daß der von Louis Couturat als Vorrede zum Phoranomus herausgegebene Aufsatz als ein (...) vom Phoranomus unabhängiges Werk betrachtet werden muß.Ferner wird ein neuer Korrespondent von Leibniz als der italienische Jesuit Antonio Baldigiani identifiziert. Sodann wird die sogenannte „Zweite Bearbeitung“ vom Tentamen de Motuum Coelestium Causis datiert und es wird dargelegt‚ daß dieser Aufsatz im Rahmen der Auseinandersetzung Leibnizens mit der Zensur zu verstehen ist. (shrink)

This study relies on environmental stewardship, a stakeholder-enlarged view of stewardship theory, and institutional theory to analyze the relationship between CEO compensation and firms’ environmental commitment in a worldwide sample of 520 large listed firms. Our findings show that environment friendly firms pay their CEOs less total compensation and rely less on incentive-based compensation than environment careless firms. This negative relationship is stronger in institutional contexts where national environmental regulations are weaker. Our findings have important theoretical meaning and practical implications. (...) Results show that CEOs do not necessarily act opportunistically; rather some of them may be willing to act as stewards of the natural environment and accept a lower, less incentive-based compensation from environment friendly firms. This study also provides evidence of the important influence of the institutional context in setting-up CEO compensation as the relationship is stronger when national environmental regulations are weaker. Our findings question the universal validity of agency theory in explaining CEO compensation. Compensation based on pecuniary incentives might be less indicated to motivate CEOs who feel rewarded by playing a stewardship role for environment friendly firms. When designing compensation for CEOs, compensation committees and external compensation advisors should consider psychological and institutional factors that might affect CEO motivation. (shrink)

‘Poor Borelli!’ exclaimed Alexandre Koyre at the end of his wonderful and by now classic study of Borelli's ‘celestial mechanics’. Koyre frankly admitted that Borelli lacked Newton's genius and intellectual audacity. However, in his story Borelli deserved a place between Kepler and Newton for his ‘imperfect but decisive’ unification of terrestrial and celestial physics. This framework finds a powerful justification in Borelli's extensive usage of Keplerian astronomy and in Newton's references to Borelli's work on the Medicean planets, Theoricae mediceorum planetarum (...) , both in his correspondence with Edmond Halley, with regard to a controversy with Robert Hooke, and in Philosophiae naturalis principia mathematica . Newton's own copy of Borelli's work with signs of his reading – the famous dog-earings – is preserved in the library of Trinity College, Cambridge. The magnitude of Newton's achievement has haunted Borelli's work ever since Principia mathematica appeared in print. For example, although Christiaan Huygens was sent a copy of Borelli's book by Prince Leopold in 1666, his marginal annotations in his own copy of the book were written after he had read Newton's masterpiece, as if Huygens had felt the need to read the book again after 1687. From then onwards Borelli's work has almost inevitably appeared in a new light that has coloured its subsequent readings.My ambition in this paper is to provide a fresh reading of Borelli's work by reconstructing its circumstances of composition, establishing a comparison with a relevant strictly contemporary source, and attending to the immediate reception of Theoricae. Borelli's work was written with an eye to a composite audience including Roman Jesuits, Sicilian intellectual circles and Leopold de' Medici's correspondents across the Alps, such as the Copernican astronomer Ismael Boulliau in Paris. Borelli was aware that his Sicilian readers were likely to have different concerns from those of Roman Jesuits or the Medici. Thus the task of charting the reception of his work is a formidable one. For a variety of reasons, including availability of sources, limitations of space, taste and competence, my analysis of Borelli's work on the Medicean planets is limited to a few themes and is not only no less partial than Koyre's, but in many respects it relies on it. If readers feel stimulated to re-read Koyre's text, one of the aims of this paper will have been fulfilled. (shrink)